Home 1971 Summary
1970 spacecrafts 1972 spacecrafts
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The 175 spacecrafts launched in 1971 :


1) Kosmos 390 / Zenit-4M 2) Kosmos 391 / DS-P1-I 11 3) Meteor 1-7 4) Kosmos 392 / Zenit-2M
5) Titan Samos 30 / KH-8 30 GAMBIT 6) Intelsat 4A 7) Kosmos 393 / DS-P1-Yu 34 8) Apollo 14 Kitty Hawk
9) Apollo 14 Antares 10) NATO 2 11) Kosmos 394 / DS-P1-M 2 12) MS-T1 / Tansei 1
13) P-35-25 / DAPP 5A F-3 14) Calsphere 3 15) Calsphere 4 16) Calsphere 5
17) Discoverer 136 / KH-4B 18) Kosmos 395 / Tselina-O 19) Kosmos 396 / Zenit-4M 20) Kosmos 397 / I2P
21) Kosmos 398 / T2K  2 22) Kosmos 399 / Zenit-4M 23) Chinasat 2 / JQ 2 24) Kosmos / Zenit-2M
25) Kosmos / DS-P1-Yu 39 26) Explorer 43 / IMP 6 27) Kosmos 400 / DS-P1-M 3 28) SDS 1 / Jumpseat 1
29) Discoverer 137 / KH-4B 30) Kosmos 401 / Zenit-4M 31) ISIS 2 32) Kosmos 402 / US-A
33) Kosmos 403 / Zenit-2M 34) Kosmos 404 / I2P 35) Kosmos 405 / Tselina-D 36) Kosmos 406 / Zenit-4M
37) D-2A Tournesol 38) Meteor 1-8 39) Salyut 1 40) Titan Samos 31 / KH-8 31 GAMBIT
41) Soyuz 10 42) Kosmos 407 / Strela-2 43) San Marco 3 44) Kosmos 408 / DS-P1-Yu 37
45) Kosmos 409 / Sfera 46) IMEWS 2 / DSP 3 47) Kosmos 410 / Zenit-2M 48) Nauka
49) Kosmos 411 / Strela-1M 50) Kosmos 412 / Strela-1M 51) Kosmos 413 / Strela-1M 52) Kosmos 414 / Strela-1M
53) Kosmos 415 / Strela-1M 54) Kosmos 416 / Strela-1M 55) Kosmos 417 / Strela-1M 56) Kosmos 418 / Strela-1M
57) Mariner 8 58) Kosmos 419 (Mars) 59) Kosmos 420 / Zenit-4M 60) Kosmos 421 / DS-P1-Yu 48
61) Mars 2 Orbiter 62) Mars 2 Lander 63) Kosmos 422 / Tsiklon 64) Kosmos 423 / DS-P1-Yu 47
65) Kosmos 424 / Zenit-4M 66) Mars 3 Orbiter 67) Mars 3 Lander 68) Kosmos 425 / Tselina-O
69) Mariner 9 70) Kosmos 426 / DS-U2-K 1 71) Soyuz 11 72) SESP 1
73) Kosmos 427 / Zenit-4MK 74) Big Bird 1 / KH-9 1 HEXAGON 75) Kosmos 428 /  Zenit-2M 76) Nauka
77) Kosmos / Zenit-4M 78) LK (N-1 test) 79) Explorer 44 / Solrad 10 80) Meteor 1-9
81) Ferret 16 82) Kosmos 429 / Zenit-4M 83) Kosmos / Tselina-O 84) Kosmos 430 / Zenit-4M
85) Apollo 15 Endeavour 86) Apollo 15 Falcon 87) Lunar Rover (LRV-1) 88) Apollo 15 Subsatellite
89) Molniya 1-18 90) Kosmos 431 / Zenit-2M 91) Kosmos / DS-P1-Yu 33 92) Kosmos 432 / Zenit-4M
93) OV 1-20 94) OV 1-21 95) Cannonball 1 / LOADS 2 96) Musketball 1 / DTDS
97) LCS 4 98) AVL-802 Mylar Sphere 99) Gndsphere 1 / Grid Sphere 7-1  100) Gndsphere 2 / Grid Sphere 7-2
101) RDT 701 / Rigid Sphere 2 102) Kosmos 433 / OGCh 103) Kosmos 434 / T2K 3 104) Titan Samos 32 / KH-8 32 GAMBIT
105) Eole 106) Kosmos / Zenit-4M 107) Kosmos 435 / DS-P1-Yu 41 108) Luna 18
109) Kosmos 436 / Tselina-O 110) Kosmos 437 / Tselina-O 111) Discoverer 138 / KH-4B 112) Hitchhiker 29
113) Kosmos 438 / Zenit-4MK 114) Kosmos 439 / Zenit-2M 115) Kosmos 440 / DS-P1-I 10 116) MS-F2 / Shinsei
117) Kosmos 441 / Zenit-4M 118) Luna 19 119) OSO 7 120) TETR 3
121) Kosmos 442 / Zenit-4M 122) Kosmos 443 / Zenit-2M 123) Nauka 124) Kosmos 444 / Strela-1M
125) Kosmos 445 / Strela-1M 126) Kosmos 446 / Strela-1M 127) Kosmos 447 / Strela-1M 128) Kosmos 448 / Strela-1M
129) Kosmos 449 / Strela-1M 130) Kosmos 450 / Strela-1M 131) Kosmos 451 / Strela-1M 132) DMSP 1 / DMSP- Block-5B F1 
133) Kosmos 452 / Zenit-4M 134) SESP-ASTEX 1 135) Kosmos 453 / DS-P1-Yu 44 136) ITOS B
137) Titan Samos 33 / KH-8 33 GAMBIT 138) Prospero / X-3 139) Kosmos 454 / Zenit-4M 140) DSCS 2-1 / DSCS II A-1
141) DSCS 2-2 / DSCS II A-2 142) STV 4 143) Explorer 45 / SSS 1 144) Kosmos 455 / DS-P1-Yu 54
145) Kosmos 456 / Zenit-4M 146) Kosmos 457 / Sfera 147) Kosmos / DS-P1-I? 148) Molniya 2-1
149) Kosmos 458 / DS-P1-Yu 53 150) Kosmos 459 / DS-P1-M 5 151) Kosmos 460 / Tselina-O 152) Interkosmos 5
153) Kosmos 461 / DS-U2-MT 1 154) Kosmos / Zenit-2M 155) Nauka 156) Kosmos 462 / I2P
157) CANYON 4 158) D-2A Polaire 159) Kosmos 463 / Zenit-4M 160) Kosmos 464 / Zenit-4M
161) Ariel 4 / UK 4 162) NOSS / "White Cloud" 163) Subsatellite 164) Subsatellite
165) Subsatellite 166) Kosmos 465 / Tsiklon 167) Kosmos 466 / Zenit-4M 168) Kosmos 467 / DS-P1-Yu 45
169) Kosmos 468 / Strela-2 170) Molniya 1-19 171) Intelsat 4B 172) Kosmos 469 / US-A
173) Kosmos 470 / Zenit-4MT 174) Oreol 1 (Aureole 1) 175) Meteor 1-10
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Spacecraft Entries
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Kosmos 390
Spacecraft:  Zenit-4M
Numbers: 1971 payload #1 ; 1971-001A ; 1469th spacecraft.
Type: Reconnaissnce
Sponsor: Soviet Union's Defense ministry
Launch: 12 January 1971 at 9h36 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit: 202 km x 270 km x 65.0°x 89.2 min. 
Recovered: 25 January 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 7 ;
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Kosmos 391
Spacecraft:  DS-P1-I No. 11
Numbers: 1971 payload #2 ; 1971-002A ; 1470th spacecraft.
Type: Antimissile technologies
Sponsor: Soviet Union's Defense ministry
Launch: 14 January 1971 at 12h00 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit: 266 km x 796 km x 70.9° x 95.2 min.
Decayed: 21 February 1972.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 9 ;
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Meteor 1-7
Spacecraft:  Meteor-M
Numbers: 1971 payload #3 ; 1971-003A ; 1471st spacecraft.
Type: Meteorology
Sponsor: Soviet Union
Launch: 20 January 1971 at 11h31 UTC, from Plesetsk Cosmodrome's LC-41/1, by an A-1/"Vostok" (8A92M).
Orbit: 629 km x 655 km x 81.2° x 97.5 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 11 ;
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Kosmos 392
Spacecraft:  Zenit-2M
Numbers: 1971 payload #4 ; 1971-004A ; 1472nd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 21 January 1971 at 8h38 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit: 203 km x 276 km x 64.9° x 89.2 min.
Recovered: 2 February 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 11 ;
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Titan Samos 30 / KH-8 30 GAMBIT
Spacecraft:  OPS 7776
Numbers: 1971 payload #5 ; 1971-005A ; 1473rd spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 21 January 1971 at 18h28 UTC, from Vandenberg Air Force Base's SLC-4W, by a Titan 3B (Titan 3B-30 / Agena D).
Orbit: 130.4 km x 392.7 km x 110.8° x 89.2 min.
Recovered 9 February 1971
Mission: (Reported as an “unidentified satellite” by USAF.)
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 11 ;
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Intelsat 4A / Intelsat IV F-2
Spacecraft:  Intelsat IV F2
Numbers: 1971 payload #6 ; 1971-006A ; 1474th spacecraft.
Type: Communications
Sponsor: Intelsat
Launch: 26 January 1971 at 0h36 UTC, from Cape Canaveral's LC-36A, by an Atlas-Centaur (Atlas SLV-3C AC-25 / Centaur D-1A 5005C).
Orbit: Initial geosynchronous orbit: 
35,740.0 km x 36,410.4 km x 0.59° x 1,450 min.
Stationed over Atlantic at 25.5° West longitude. 
Decayed: n/a
Mission: Launched by NASA for ComSatCorp on behalf of INTELSAT. Intelsat-IV F-2 was the first in the Intelsat IV series of advanced communications satellite.  As the largest commercial comsat launched, it was 5.4 meters high with 2.4 meters diameter and weighed 1,397 kg at launch. It had 12 transponders, providing 12 TV channels and 3000-9000 telephone circuits, and was capable of multiple-access and simultaneous transmissions. Expected lifetime was seven years, two years more than Intelsat III comsats and over five years more than Intelsat I. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 14 ;
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Kosmos 393
Spacecraft:  DS-P1-Yu No. 34
Numbers: 1971 payload #7 ; 1971-007A ; 1475th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 26 January 1971 at 12h45 UTC, from Plesetsk Cosmodrome's LC1-33/1, by a Kosmos B-1 (11K63).
Orbit: 281 km km x 417 km x 70.9° x 91.3 min.
Decayed: 16 JUne 1971
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 15 ;
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Apollo 14 Kitty Hawk
Spacecraft:  Apollo CM-110 / Kitty Hawk
Numbers: 1971 payload #8 ; 1971-008A ; 1476th spacecraft.
Type: Piloted spascecraft
Sponsor: NASA
Launch: 31 January 1971 at 21h03 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-509).
Orbit: Lunar mission
Decayed: 9 February 1971
Mission: Apollo 14 (AS-509), carrying Alan B. Shepard, Jr. (commander), Stuart A. Roosa (CM pilot), and Edgar D. Mitchell (LM pilot), was the 11th Apollo mission to date, 8th manned Apollo mission, and 3rd successful lunar landing mission.  Launch was 40 minutes and 3 seconds later than planned because of high overcast clouds and rain.  First midcourse correction modified trajectory so spacecraft arrival time at Moon would be same as if launch had been on time. Then, first five docking attempts between CM Kitty Hawk and LM Anteres were unsuccessful, this could had prevent extraction of LM from the Saturn V’s S-IVB stage and make lunar landing impossible. Sixth try however was successful. The spacecraft entered lunar orbit 82 hr. 37 min. after launch on 4 February 1971 at 1h55 EST. The crew then proceed to land on the Moon (see below).
      While LM was on the Moon, Stuart Roosa, orbiting in CSM Kitty Hawk, completed bootstrap photography of Descartes landing site and astronomic photography, including Gegenschein experiment, and prepared for shortened rendezvous technique.
     After LM Antares return from the lunar surface and crew transfer, the CSM Kitty Hawk depart the Monn on 6 February, after 66 hrs and 40 min and 34 revolutions, in lunar orbit.  It splashed down in mid-Pacific about 7 km from recovery ship U.S.S. New Orleans on 9 February 1971 at 16hr 05 min EST. Astronauts, wearing flight suits and masks, were carried by helicopter to recovery ship, where they entered mobile quarantine facility with recovery physicians and technician.
     Apollo 14 was the first Apollo mission to be crewed entirely by men who have never before flown in earth orbit and commanded by a veteran whose total previous time in space was 15 minutes. The mission was led by the oldest man to go into space, Alan Shepard (47), the only astronaut to return to active duty after a medically enforced period of idleness. It is the first Apollo launch to be delayed because of weather. It is the first to run into a major problem on its first day out. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;Astronautics And Aeronautics, 1971, p. 25-30  & 35 ;
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Apollo 14 Antares
Spacecraft:  LM 8 / Antares
Numbers: 1971 payload #9 ; 1971-008C ; 1477th spacecraft.
Type:
Sponsor:
Launch: 31 January 1971 at 21h03 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-509).
Orbit: Landed on the Moon
Decayed: 6 February 1971
Mission: Apollo 14’s lunar module Antares landed at Fra Mauro on 5 February 1971 at 4hr17 EST, on 8° slope, only 10-20 meters short of planned landing point. “We seem to be sitting in a bowl, Mitchell said. It’s choppy, undulating.” The first EVA proceed. Shepard stepped on lunar surface at 9:53 EST on 5 February. Mitchell stepped down six minutes later. They collected 19.5-kg sample, deployed TV, S-band antenna, American flag, and solar wind composition experiment; photographed lunar surface, deployed  ALSEP and laser-ranging retroreflector. Mitchell conducted active seismic experiment, firing 13 thumper shots into lunar surface. Eight of the 21 cartridges misfired, but the 13 fired sent vibrations 18-21 meter into moon. Crew reentered LM after 4 hrs 49 min.
     After resting inside LM, they left LM on 6 February at 3:11 am EST. They loaded MET (Mobile Equipment Transporter) with photographic equipment and proceeded toward Cone Crater. MET bounced slightly during traverse but appeared stable. Astronauts’ main problem was lunar dust which stuck to their space suits up to their knees. “We’re filthy as pigs,” Mitchell said. Geological features were described and materials collected. Crew was unable to reach rim of Cone Crater because slopes were steeper than expected and climb would have required running behind time line. Just before reentering LM Shepard made surprise: he dropped a golf ball on lunar surface and, on third attempt, drove it about 366 meters. Astronauts reentered LM after 4 hrs 35 min, bringing total EVA time to 9 hrs 24 min, with 43 kg of lunar sample. 
     Antares lifted-off from the monn 33 hrs 31 min after landing. Docking with Kitty Hawk was accomplished without any problem at 15:36, on February 6.  The ascent stage was jettisoned and intentionally crashed onto lunar surface at 19h05 EST on Febuary 6, at 3° 35' south latitude and 19° 40' west longitude. Impact was recorded by Apollo 12 and Apollo 14 ALSEPs. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;Astronautics And Aeronautics, 1971, p. 25-28 ;
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NATO 2
Spacecraft:  NATO-B or Natosat 2 
Numbers: 1971 payload #10 ; 1971-009A ; 1778th spacecraft.
Type: Communications
Sponsor: North Atlantic Treaty Organization (NATO)
Launch: 3 February 1971 at 1h41 UTC, from Cape Canaveral's LC-17A, by a Delta DSV-3L-11 (Thor Delta M 560 / Delta 82).
Orbit: 34,493.6-km x 37,053.0-km x 0°
Geostationary orbit, station over Atlantic at 26° west longitude
Decayed: n/a
Mission: NATO 2 was the second of two NATO comsats launched under DOD-NATO agreement. USAF managed project for DOD and would reimburse NASA for launch services. NATO would reimburse USAF. Initial operation of satellite telemetry and command functions were performed from USAF satellite control facility. Control of orbital operations would be transferred to NATO after spacecraft reached station.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 36-7 ;
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Kosmos 394
Spacecraft:  DS-P1-M No. 2
Numbers: 1971 payload #11 ; 1971-010A ; 1479th spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 9 February 1971 at 18h49 UTC, from Plesetsk Cosmodrome's LC-132/1, by a Kosmos C-1 (11K65M 65027-119).
Orbit: 572 km x 613 km x 65.8° x 96.5 min.
Decayed:
Mission: kosmos 394  had been intercepted by kosmos 397. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 42,64 ;
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MS-T1 / Tansei 1
Spacecraft:  Tansei, “Light Blue,” was named for University of Tokyo colors.
Numbers: 1971 payload #12 ; 1971-011A ; 1480th spacecraft.
Type: Technology
Sponsor: Japan's ISAS (University of Tokyo’s Space and Aeronautics Institute)
Launch: 16 February 1971 at 4h00 UTC, from Kagoshima Space Center's M, by a Mu-3S (M-4S-2).
Orbit: 990 km x 1,110 km x 29.7° x 106 min. 
Decayed:
Mission: University of Tokyo’s Space and Aeronautics Institute successfully launched Japan’s second satellite, the 63-kg Tansei 1 (MST-1). Puvpose of mission was to conduct “engineering test for the launching of scientific satellites.” 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 47 ;
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P-35-25 / DAPP 5A F-3
Spacecraft:  (FTV-10) / DMSP Block 5A F3
Data Acquisition and Processing Program
Numbers: 1971 payload #13 ; 1971-012A ; 1481st spacecraft.
Type: Meteorology
Sponsor: U.S. Air Force
Launch: 17 February 1971 at 3h52 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2 (249).
Orbit: 767.7 km x 832.0 km x 98.8’ x 100.8-min.
Decayed:
Mission: (Reported as an “Unidentified satellite” by USAF.)
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 47 ;
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Calsphere 3
Spacecraft:  S70-3 Drag Sphere / NRL PL170A
Numbers: 1971 payload #14 ; 1971-012C ; 1482nd spacecraft.
Type: Radar Calibration
Sponsor: U.S. Air Force
Launch: 17 February 1971 at 3h52 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2 (249).
Orbit: 762.8 to 772.5 km x 833.6 km x 98.8’ x 100.8 min.
Decayed:
Mission: Calisphere 3, 4 and 5 provided targets for radar calibration and evaluate surface material erosion and drag effects vis-a-vis their inert gold or aluminum surfaces.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 47 ;
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Calsphere 4
Spacecraft:  S70-3 Drag Sphere / NRL PL170B
Numbers: 1971 payload #15 ; 1971-012D ; 1483rd spacecraft.
Type: Radar calibration
Sponsor: U.S. Air Force
Launch: 17 February 1971 at 3h52 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2 (249).
Orbit: 762.8 to 772.5 km x 833.6 km x 98.8’ x 100.8 min.
Decayed:
Mission: Calisphere 3, 4 and 5 provided targets for radar calibration and evaluate surface material erosion and drag effects vis-a-vis their inert gold or aluminum surfaces.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 47 ;
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Calsphere 5
Spacecraft:  S70-3 Drag Sphere / NRL PL170C
Numbers: 1971 payload #16 ; 1971-012E ; 1484th spacecraft.
Type: Radar calibration
Sponsor: U.S. Air Force
Launch: 17 February 1971 at 3h52 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2 (249).
Orbit: 762.8 to 772.5 km x 833.6 km x 98.8’ x 100.8 min.
Decayed:
Mission: Calisphere 3, 4 and 5 provided targets for radar calibration and evaluate surface material erosion and drag effects vis-a-vis their inert gold or aluminum surfaces.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 47 ;
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Discoverer 136 / CORONA 1113 / KH-4B
Spacecraft:  OPS 3297
Numbers: 1971 payload #17 ; 1971 1st loss ; 1485th spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 17 February 1971 at 20h04 UTC, from Vandenberg Air Force Base's SLC-3W, by a Thor-Agena D (Thor 2L 537 / Agena D 1659).
Orbit: n/a
Decayed: n/a
Mission: The Thor-Agena booster carrying this “unidentified satellite” exploded about 40 seconds after liftoff.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; NRO's Corona : JPL's Corona : Astronautics And Aeronautics, 1971, p. 48 ;
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Kosmos 395
Spacecraft:  Tselina-O
Numbers: 1971 payload #18 ; 1971-013A ; 1486th spacecraft.
Type: Electronic intelligence 
Sponsor: Soviet Union's Defense ministry
Launch: 18 February 1971 at 21h07 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-117).
Orbit: 529 km x 545 km x 74.0° x 95.3 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 48 ;
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Kosmos 396
Spacecraft:  Zenit-4M
Numbers: 1971 payload #19 ; 1971-014A ; 1487th spacecraft.
Type: Reconnaissance
Sponsor: Soivet Union's Defense ministry
Launch: 18 February 1971 at 14h09 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit: 189 km x 268 km x 65.4° x 89.0 min.
Recovered: 3 March 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 48 ;
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Kosmos 397
Spacecraft:  I2P
Numbers: 1971 payload #20 ; 1971-015A ; 1488th spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 25 February 1971 at 11h16 UTC, from Baykonur Cosmodrome's LC-90, by a F-1/Tsyklon 2.
Orbit: 584-km x 2241-km x 65.8° x 113.8-min.
Decayed:
Mission: kosmos 397 intercepted kosmos 394.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 54, 64 ;
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Kosmos 398
Spacecraft:  T2K No. 2
Numbers: 1971 payload #21 ; 1971-016A ; 1489th spacecraft.
Type: Piloted spacecraft test
Sponsor: Soviet Union
Launch: 26 February 1971 at 5h05 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/Soyuz (11A511L).
Orbit: 191 km x 232 km x 51.6° x 89.0 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 56 ;
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Kosmos 399
Spacecraft:  Zenit-4M
Numbers: 1971 payload #22 ; 1971-017A ; 1490th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 3 March 1971 at 9h36 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit: 196 km x 438 km x 64.9° x 90.8 min.
Recovered: 17 March 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 61 ;
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JQ / Chang Zheng 1 (Chinasat 2)
Spacecraft:  (Shi Jian-1)
Numbers: 1971 payload #23 ; 1971-018A ; 1491st spacecraft.
Type: Technology
Sponsor: China
Launch: 3 March 1971 at 12h04 UTC, from Jiuquan LA-2A, by a Chang Zheng 1 (CZ-1).
Orbit: 266 km x 1,815 km x 69.9° x 105.9 min. 
Decayed:
Mission: Second “Communist China satellite” launched from Shuangch‘eng at 20:15 local time. The launch was unannounced, but it was monitored by NORAD and was accidently observed by US Navy pilot returning to carrier off Vietnam coast after mission over Southeast Asia. China news agencies said satellite weighed 220.5 kgand was transmitting scientific data.  West Germany’s Bochum Observatory reported that China’s second satellite had stopped transmitting signals on 23 March 1971. Scientists did not know whether satellite had failed or had been turned off.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 61, 74 & 81 ;
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Kosmos
Spacecraft:  Zenit-2M
Numbers: 1971 payload #24 ; 1971 2nd loss ; 1492nd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 5 March 1971, from Plesetsk Cosmodrome's LC-43, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
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Kosmos
Spacecraft: DS-P1-Yu No. 39
Numbers: 1971 payload #25 ; 1971 3rd loss ; 1493rd spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 5 March 1971 at 8h15 UTC, from Kapustin Yar Cosmodrome's LC-86/4, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
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Explorer 43 / IMP 6
Spacecraft:  IMP I (Interplanetary Monitoring Platform)
Numbers: 1971 payload #26 ; 1971-019A ; 1494th spacecraft.
Type: Space environment studies
Sponsor: NASA's Goddard Space Flight Center
Launch: 13 March 1971 at 16h15 UTC, from Cape Canaveral's LC-17A, by a Delta DSV-3M6 (Thor Delta M6 562 / Delta 83).
Orbit: 241 km x 206,049 km x 28.6° x 6,012-min. (4 days 12 hrs 12 min)
Decayed:
Mission: IMP 6 primary objective was to investigate during period [73] of decreasing solar activity and through several solar rotations, the nature of the interplanetary medium and interplanetary-magnetospheric interaction, including characteristic features of solar wind, interplanetary fields and sector structure, and modulation effects on cosmic rays. It was the first of series of second-generation spacecraft designed to study solar-lunar-terrestrial relationships. It was eighth of 10 IMPS and, at 288 kg, was largest as well as most advanced spacecraft in Explorer series. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 72-3 ;
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Kosmos 400
Spacecraft:  DS-P1-M No. 3
Numbers: 1971 payload #27 ; 1971-020A ; 1495th spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 19 March 1971 at 21h45 UTC, from Plesetsk Cosmodrome's LC-132/1, by a Kosmos C-1 (11K65M 65027-118).
Orbit: 983 km x 1,005 km x 65.8° x 104.9 min.
Decayed:
Mission: Kosmos 400 target satellite was hunted by Kosmos 404, which “went through a series of maneuvers under propulsion supplied by the giant SS-9 rocket,” reports the Washington Post.  “The Soviet Union has conducted such space marksmanship tests before … But this time the test showed more sophistication … as the hunter satellite stayed in phase with the target for a longer period of time than on previous shots.”
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 78, 116 ;
.
SDS 1 / Jumpseat 1
Spacecraft:  OPS 4788
Numbers: 1971 payload #28 ; 1971-021A ; 1496th spacecraft.
Type: Electronic intelligence
Sponsor: U.S. Air Force
Launch: 21 March 1971 at 3h45 UTC, from Vandenberg Air Force Base's SLC-4W, by a Titan 3B (Titan 3B-36 (33B-1) / Ascent Agena D).
Orbit: 328 km x 39 266 km x 63.2° x 701.8 min.
Decayed:
Mission: (Reported as an “unidentified satellite” by USAF.)
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 79 ;
.
Discoverer 137 / CORONA 1114 / KH-4B
Spacecraft:  OPS 5300
Numbers: 1971 payload #29 ; 1971-022A ; 1497th spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 24 March 1971 at 21h05 UTC, from Vandenberg Air Force Base's SLC-3W, by a Thor-Agena D (Thorad 2L 538 / Agena D 1660).
Orbit: 172 km x 235 km x 81.5° x 88.5 min.
Decayed:
Mission: (Reported as an “unidentified satellite” by USAF.)
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; NRO's Corona : JPL's Corona : Astronautics And Aeronautics, 1971, p. 80 ;
.
Kosmos 401
Spacecraft:  Zenit-4M
Numbers: 1971 payload #30 ; 1971-023A ; 1498th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 27 March 1971 at 11h02 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit: 186 km x 291 km x 72.8° x 89.2 min.
Recovered: 9 April 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 80 ;
.
ISIS 2
Spacecraft:  ISIS B ; International Satellite for Ionospheric Studies
Numbers: 1971 payload #31 ; 1971-024A ; 1499th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: Canadian Defence Research Board (DRB) & NASA
Launch: 1st April 1971 at 2h57 UTC, from Vandenberg Air Force Base's SLC-2E, by a Delta DSV-3E1 (Thor Delta E1 491 / Delta 84).
Orbit: 1,355 km X 1,423 km X 88.2° X 113.5 min.
Decayed:
Mission: ISIS 2 studIied the topside of ionosphere above electron peak of F region and to extend cooperative Canadian-US. program of ionospheric studies initiated by Alouette 1 (1962) by combining sounder data with correlative direct measurements for time sufficient to cover latitudinal and diurnal variations during high solar activity. Spacecraft was operating satisfactorily. The Canadian-built satellite was eight-sided spheroid that weighed 264 kg, was 127 cm in diameter with two sounder antennas, and carried 12 ionospheric investigation experiments. ISIS 2 was fourth in series of five satellites to improve understanding of ionospheric physics. First launch in series (1965) had orbited Canada’s Alouette 2 and U.S. Explorer 31. Isis 1 had been launched in 1969. ISIS program was joint undertaking of NASA and Canadian Defence Research Board (DRB) under December 1963 Memorandum of Understanding. DRB was responsible for spacecraft design, fabrication, electrical testing, experiment integration, and satellite control. NASA provided launch vehicle and launch facilities.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 88 ;
.
Kosmos 402
Spacecraft:  US-A
Numbers: 1971 payload #32 ; 1971-025A ; 1500th spacecraft.
Type: Ocean surveillance ("RORSAT")
Sponsor: Soviet Union's Defense ministry
Launch: 1st April 1971 at 11h31 UTC, from Baykonur Cosmodome's LC-90, by a F-1/Tsyklon 2.
Orbit: 948 km x 1,035 km x 64.9’ x 104.9 min. 
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 93 ;
.
Kosmos 403
Spacecraft:  Zenit-2M
Numbers: 1971 payload #33 ; 1971-026A ; 1501st spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 2 April 1971 at 8h24 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit: 205 km x 213 km x 81.3° x 88.6 min.
Recovered: 14 April 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 94 ;
.
Kosmos 404
Spacecraft:  I2P
Numbers: 1971 payload #34 ; 1971-027A ; 1502nd spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 4 April 1971 at 14h24 UTC, from Baykonur Cosmodrome's LC-90, by a F-1/Tsyklon 2.
Orbit: 817 km x 1,009 km X 65.7° X 103.1 min.
Reentered: 4 April 1971.
Mission: Kosmos 400 target satellite was hunted by Kosmos 404, which “went through a series of maneuvers under propulsion supplied by the giant SS-9 rocket,” reports the Washington Post.  “The Soviet Union has conducted such space marksmanship tests before … But this time the test showed more sophistication … as the hunter satellite stayed in phase with the target for a longer period of time than on previous shots.”
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 96, 116 ;
.
Kosmos 405
Spacecraft:  Tselina-D
Numbers: 1971 payload #35 ; 1971-028A ; 1503rd spacecraft.
Type: Electronic intelligence
Sponsor: Soviet Union's Defense ministry
Launch: 7 April 1971 at 7h12 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-1/"Vostok" (8A92M).
Orbit: 674 km x 681 km x  81.2° x 98.2 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 98 ;
.
Kosmos 406
Spacecraft:  Zenit-4M
Numbers: 1971 payload #36 ; 1971-029A ; 1504th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 14 April 1971 at 8h09 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-2/"Voskhod" (11A57).
Orbit: 199 km x 222 km x 81.3°x 88.6 min.
Recovered: 24 April1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 102 ;
.
D-2A Tournesol
Spacecraft: Tourmsol means sunflower in French
Numbers: 1971 payload #37 ; 1971-030A ; 1505th spacecraft.
Type: Earth sciences
Sponsor: France
Launch: 15 April 1971 at 9h19 UTC, from Kourou Space Center's ELD, by a Diamant B (No. 3).
Orbit: 457 km x 696 km x 46.3° x 96.2 min.
Decayed:
Mission: The 90-kg D2-A Tourmsol  would measure radiation for six months.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 103 ;
.
Meteor 1-8
Spacecraft:  Meteor-M
Numbers: 1971 payload #38 ; 1971-031A ; 1506th spacecraft.
Type: Meteorollgy
Sponsor: Soviet Union
Launch: 17 April 1971 at 11h44 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-1/"Vostok" (8A92M).
Orbit: 609 km x 633 km x 81.2° x 97.1 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;; Astronautics And Aeronautics, 1971, p. 105 ;
.
Salyut 1
Spacecraft:  DOS 1 / 17K No. 121
Numbers: 1971 payload #39 ; 1971-032A ; 1507th spacecraft.
Type: Space station
Sponsor: Soviet Union (Korolev's Design Bureau)
Internal layout of the Salyut-1 orbital station: (1) Rendezvous system antennae, (2) Solar panels, (3) Radio-telemetry systems antennae, (4) Portholes, (5) Orion stellar telescope, (6) Air regeneration system, (7) Movie camera, (8) Photo camera, (9) Biological research equipment, (10) Food refrigerator, (11) Attitude control jets, (12) Propellant tanks, (13) Micrometeorite sensor, (14) Running track, (15) Working table, (16) Central control post, (17) Pressurization system propellant tanks, (18) Cosmonauts visor, (19) Soyuz spacecraft propulsion system.
Launch: 19 April 1971 at 1h40 UTC, from Baykonur Cosmodrome's LC-81P, by a D-1/Proton-K (8K82K 254-01).
Orbit: Initial: 256 km x 269 km x 51.5° x 89.7 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Jonathan Space Report No. 430 ; Astronautics And Aeronautics, 1971, p. 105 ;
.
Titan Samos 31 / KH-8 31 GAMBIT
Spacecraft:  OPS 7899
Numbers: 1971 payload #40 ; 1971-033A ; 1508th spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 22 April 1971 at 15h30 UTC, from Vandenberg Air Force Base's SLC-4W, by a Titan 3B (Titan 3B-31 / Agena D).
Orbit: 130 km x 401 km x 110.9° x 89.8 min.
Recovered: 13 May 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 107 ;
.
Soyuz 10
Spacecraft:  Soyuz 7K-OKS s/n 31
Numbers: 1971 payload #41 ; 1971-034A ; 1509th spacecraft.
Type: Piloted spacecraft
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 23 April 1971 at 23h54 UTC, from Baykonur Cosmodrome's LC-1, by an A-2/Soyuz (11A511).
Orbit: 200 km x 224 km x 51.320 x 88.2 min.
Recovered: 25 April 1971
Mission: Soyuz I0, carrying Vladimir Shatalov, Aleksey Yeliseyev and Nikolay Rukavishnikov, was launched at 4:54 local time April 23 (18:54 EST April 22). Tass said spacecraft would conduct joint experiments with Salyut 1, make comprehensive check of onboard systems, test manual and automatic control systems, check out spacecraft orientation and stabilization in different flight conditions, and conduct medical-biological research on influence of space flight factors on human organism. 
     On 24 April, it linked with Salyut 1 for 5½ hrs, undocked, and pulled away. Taped pictures released later on Moscow TV showed Soyuz 10 moving away from Salyut 1 after docking experiment while commentator said: “The principles of rendezvous and docking with the use of new equipment were tested and checked out in the course of the joint experiment. A rigid mechanical link-up was achieved, followed by undocking of the manned ship from the orbital station. After the end of this experiment in maneuvering, both vehicles continued to fulfill their program.” 
     After separation Soyuz 10 circled Salyut 1 for about one hour, photographing and filming it from various angles. Tass announced itreentered and landed at 4:40 Baykonur time April 25 (18:40 EDT April 24) after “fulfilling the program of studies. The studies carried out during this flight are a stage in the general program of work with the orbital scientific station.”
     At press conference on 25 April, Aleksey Yeliseyev described Sulyut 1 as “overwhelming. It was a little like a train entering a railroad terminal. That’s how we felt as our rather big Soyuz eased up to the station. […] Then we separated and circled the station, looking at it from all sides and shooting movie film of it. It was an overwhelming sight: There was this structure in flight, with a tremendous amount of apparatus and all sorts of antennas.”
     Soviet comments on its space station program had shifted in emphasis to possible future docking experiments between Salyut satellites and manned spacecraft and had “left open the question of whether … Soyuz 10 … succeeded in doing all it set out to do,”  [No word of the failed docking operation that nearly cost the live of the crew.]
     On 26 april 1971, Thomas O’Toole said in Washington Post that: “The short and uneventful flight of Soyuz 10 suggested … that the Soviet Union ran into technical difficulties in its first attempt at establishing a manned workshop in earth orbit, Just what the difficulties might have been is unclear, but the landing of Soyuz 10 after only two days in space, the brief time Soyuz spent docked with the Salute workshop and the apparent failure to transfer crew members … all added up in American minds to a bungled mission.”
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 107-8, 109-10, 110 ;
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Kosmos 407
Spacecraft:  Strela-2
Numbers: 1971 payload #42 ; 1971-035A ; 1510th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 23 April 1971 at 11h31 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-116).
Orbit: 791 km x 818 km x 74.0° x 100.9 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 108 ;
.
San Marco 3
Spacecraft:  San Marco C
Numbers: 1971 payload #43 ; 1971-036A ; 1511th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: Italy (Italian Space Commission (CRS) and NASA)
Launch: 24 April 1971 at 7h32 UTC, from San Marco, by a Scout B (S173C).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 408
Spacecraft:  DS-P1-Yu No. 37
Numbers: 1971 payload #44 ; 1971-037A ; 1512th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 24 April 1971 at 11h15 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit: 200 km x 1,510 km x 81.8°x 102 min.
Decayed: 29 December 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 109 ;
.
Kosmos 409
Spacecraft:  Sfera
Numbers: 1971 payload #45 ; 1971-038A ; 1513th spacecraft.
Type: Geodesy
Sponsor: Soviet Union
Launch: 28 April 1971 at 14h38 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-115).
Orbit: 1,172 km x 1,228 km x 74.0° x 109.4 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 114 ;
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IMEWS 2 / DSP 3
Spacecraft:  DSP F2 ; Integrated Missile Early Warning Satellites
Numbers: 1971 payload #46 ; 1971-039A ; 1514th spacecraft.
Type: Missile early warning
Sponsor: U.S. Air Force
Launch: 5 May 1971 at 7h43 UTC, from Cape Canaveral Air Force Base's LC-40, by a Titan 3C (23C-2).
Orbit: Initial: 295 km x 35,787 km x 26.4° x 631 min.
Geostationary over Asia?
Decayed:
Mission: Launched as a 800-kg unidentified satellite. According to press reports, this satellite was a “reconnaissance mission to monitor Soviet and Communist Chinese missile tests and provide 30-minutes warning of long-range rocket attack.” The satellite would be stationed over Asia.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; DSP, A Pictorial ; Astronautics And Aeronautics, 1971, p. 122 ;
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Kosmos 410
Spacecraft:  Zenit-2M
Numbers: 1971 payload #47 ; 1971-040A ; 1515th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 6 May 1971 at 6h28 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit: 203 km x 288 km x 65° x 89.2 min.
Recovered: 18 May 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 122 ;
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Nauka
Spacecraft:  [Nauka #5]
Numbers: 1971 payload #48 ; 1971-040C ; 1516th spacecraft.
Type: Science & technology
Sponsor: Soviet Union's Defense ministry
Launch: 6 May 1971 at 6h28 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 411
Spacecraft:  Strela-1M
Numbers: 1971 payload #49 ; 1971-041A ; 1517th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,317 km x 1,493 km x 74° x 113.8 min. 
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
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Kosmos 412
Spacecraft:  Strela-1M
Numbers: 1971 payload #50 ; 1971-041B ; 1518th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,482 km x 1,536 km x 74° x 116.1 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 413
Spacecraft:  Strela-1M
Numbers: 1971 payload #51 ; 1971-041C ; 1519th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,476 km x 1,508 km x 74° x 115.7 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 414
Spacecraft:  Strela-1M
Numbers: 1971 payload #52 ; 1971-041D ; 1520th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,428 km x 1,495 km x 74° x 115.1 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 415
Spacecraft:  Strela-1M
Numbers: 1971 payload #53 ; 1971-041E ; 1521st spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,453 km x 1,501 km x 74°x 115.4 min. 
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 416
Spacecraft:  Strela-1M
Numbers: 1971 payload #54 ; 1971-041F ; 1522nd spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,373 km x 1,493 km x 74°x 114.4 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 417
Spacecraft:  Strela-1M
Numbers: 1971 payload #55 ; 1971-041G ; 1523rd spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,345 km x 1,494 km x 74° x 114.1 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Kosmos 418
Spacecraft: Strela-1M
Numbers: 1971 payload #56 ; 1971-041H ; 1524th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 7 May 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-121).
Orbit: 1,401 km x 1,494 km x 74°x 114.8 min.
Decayed:
Mission: Each satellite was about 80 centimeter in diameter, 90 centimeter long, and weighed 36-45 kg.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 125 ;
.
Mariner 8
Spacecraft:  Mariner 71H / Mariner Mars '71 / Mariner H 
Numbers: 1971 payload #57 ; 1971 4th loss ; 1525th spacecraft.
Type: Mars probe
Sponsor: NASA
Launch: 9 May 1971 at 1h11 UTC, from Cape Canaveral LC-36A, by an Atlas-Centaur (Atlas SLV-3C AC-24 / Centaur D-1A 5405C).
Orbit: n/a
Decayed: 9 May 1971.
Mission: Mariner 8 Mars probe failed to enter orbit when Centaur stage of Atlas-Centaur booster malfunctioned after normal countdown and liftoff. Anomalies began to appear with Centaur main engine start. Centaur stage oscillated in pitch in diverging manner and subsequently tumbled out of control, engines shut down from starvation caused by tumbling, and Centaur and spacecraft separated and reentered Earth’s atmosphere approximately 1,500 km down range and 400 km north of Puerto Rico. 
     On 20 May 1971, NASA held Hq. news conference on Mariner status. Dr. George M. Low, NASA Deputy Administrator, reported on failure of May 8 Mariner-H launch. Review by JPL, LeRC, and General Dynamics Convair Div. personnel had isolated failure to integrated circuit in pitch channel of rate gyro preamplifier in Centaur stage autopilot. When Atlas-Centaur ignited, “amplifier output was … only 20 to 40 percent of what it should be.” Second anomaly had been noted 25 sec. after main engines started; “engines did not gimbal all the way to the stops… At 1.2 degrees they stopped and hung up. So the signal for the first 20 or 25 seconds indicated that the engines oscillated with increasing amplitude in response to autopilot signals but the signals were at a lower gain than they should have been… With the engine then thrusting at an angle, the vehicle wound up and started tumbling.” Amplifier had functioned properly during checkout 40 min. before liftoff, “so sometime between T-30 minutes and the Atlas sustainer engine shutdown ignition of the Centaur stage, this component failed.” Investigators had assumed “that we had in the circuit a failed diode or a diode with a loose connection in it, that a voltage transient during powered flight … then got into the integrated circuit and caused all of the other events.” To avoid repetition of anomaly, NASA was “subjecting the autopilot cans to additional temperature cycling and vibration tests” to ascertain they were operating within limits “under some off-nominal conditions.” New test was being conducted on autopilots for Mariner-I Atlas-Centaur 23 “to make sure that the diodes are indeed there and properly functioning and properly protecting the integrated circuit … before we fly again.” Failure of three Atlas-Centaurs in 15 flights had led to appraisal of general quality of the vehicle,” Dr. Low said. Conclusion “was that, if anything, quality has improved. There is no trend away from improving quality…”
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 126-7, 136 ;
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Kosmos 419 
Spacecraft: 3MS No. 170
Numbers: 1971 payload #58 ; 1971-042A ; 1526th spacecraft.
Type: Mars probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 10 May 1971 at 16h58 UTC, from Baykonur Cosmodrome's LC-81L, by a D-1-e/Proton-K/D (8K82K 253-01 / 11S824).
Orbit: 203 km x 340 km x 51.5° x  87.5 min.
Recovered: 12 May 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 129 ;
.
Kosmos 420
Spacecraft: Zenit-4M
Numbers: 1971 payload #59 ; 1971-043A ; 1527th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 18 May 1971 at 8h09 UTC, from Baykonur Cosmdrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit: 200 km x 248 km x 51.7°x 88.9 min.
Recovered: 29 May 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 133 ;
.
Kosmos 421
Spacecraft:  DS-P1-Yu No. 48
Numbers: 1971 payload #60 ; 1971-044A ; 1528th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 19 May 1971 at 10h20 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit: 273 km x 464 km x 70.9°x 91.9 min.
Reentered: 8 November 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 135 ;
.
Mars 2 Orbiter
Spacecraft:  4M No. 171
Numbers: 1971 payload #61 ; 1971-045A ; 1529th spacecraft.
Type: Mars probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 19 May 1971 at 16h22 UTC, from Baykonur Cosmodrome's LC-81P, by a D-1-e/Proton-K/D (8K82K 255-01 / 11S824).
Orbit:  Interplanetary Solar trajectory.
Decayed:
Mission: Primary objective of six-month, 470-million-km Mars 2 mission, TASS said, was to conduct complex research of Mars and its atmosphere and study characteristics of solar plasma, cosmic rays, and radiation along Mars route. The probe was scheduled to reach Mars vicinity in November 1971, when planet was 129 million km from Earth. Mars 2 was said to weigh 4,650 kg, almost five times weight of 1,000-kg Mariner-1 scheduled for launch by NASA toward end of May. Size of Mars 2 had led U.S. space experts to predict that it might attempt Mars orbit.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 134 ;
.
Mars 2 Lander
Spacecraft:  PROP-M
Numbers: 1971 payload #62 ; 1971-045[B] ; 1530th spacecraft.
Type: Mars probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 19 May 1971 at 16h22 UTC, from Baykonur Cosmodrome's LC-81P, by a D-1-e/Proton-K/D (8K82K 255-01 / 11S824).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 422
Spacecraft: Tsiklon
Numbers: 1971 payload #63 ; 1971-046A ; 1531st spacecraft.
Type: Navigation
Sponsor: Soviet Union's Defense ministry
Launch: 22 May 1971 at 0h43 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 53727-120).
Orbit: 986 km x 1,011 km x 74°x 105 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 139 ;
.
Kosmos 423
Spacecraft:  DS-P1-Yu No. 47
Numbers: 1971 payload #64 ; 1971-047A ; 1532nd spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 27 May 1971 at 12h00 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit: 279 km x 489 km x 71° x 91.9 min.
Decayed: 26 November 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 146 ;
.
Kosmos 424
Spacecraft:  Zenit-4M
Numbers: 1971 payload #65 ; 1971-048A ; 1533rd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 28 May 1971 at 10h33 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-2/"Voskhod" (11A57).
Orbit: 198 km x 287 km x  65.3° x  88.9 min. 
Recovered: 10 June 1971.
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 148 ;
.
Mars 3 Orbiter
Spacecraft:  4M No. 172
Numbers: 1971 payload #66 ; 1971-049A ; 1534th spacecraft.
Type: Mars probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 28 May 1971 at 15h26 UTC, from Baykonur Cosmodrome's LC-81L, by a D-1-e/Proton-K/D (8K82K 249-01 / 11S824).
Orbit: heliocentric trajectory toward Mars.
Decayed:
Mission: Mars 3 probe supplemented Mars 2, launched May 19. All instruments functioned normally.  Each probe weighed 4,650 kg and had as prime mission objective complex research of Mars and its atmosphere. Tass said that Mars 3 carried instrumentation for exploration of Mars and neighboring space, for investigating solar radio emission in onemeter wave band in experiment developed and manufactured by French specialists in French-Soviet cooperative program, and for measuring characteristics of solar plasma and cosmic rays. 
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 147-8 ;
.
Mars 3 Lander
Spacecraft:  PROP-M
Numbers: 1971 payload #67 ; 1971-049[B] ; 1535th spacecraft.
Type: Mars probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 28 May 1971 at 15h26 UTC, from Baykonur Cosmodrome's LC-81L, by a D-1-e/Proton-K/D (8K82K 249-01 / 11S824).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 425
Spacecraft:  Tselina-O
Numbers: 1971 payload #68 ; 1971-050A ; 1536th spacecraft.
Type: Electronic intelligence
Sponsor: Soviet Union's Defense ministry
Launch: 29 May 1971 at 3h50 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 3149-30).
Orbit: 508 km x 550 km x 74° x 95.1 min.
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 148 ;
.
Mariner 9
Spacecraft:  Mariner 71J / Mariner Mars '71 / Mariner-I
Numbers: 1971 payload #69 ; 1971-051A ; 1537th spacecraft.
Type: Mars probe
Sponsor: NASA
Launch: 30 May 1971 at 22h23 UTC, from Cape Canaveral's LC-36B, by an Atlas-Centaur (Atlas SLV-3C AC-23 / Centaur D-1A 5404C).
Orbit: Initial: heliocentric trajectory toward Mars.
Mars orbit:
Decayed:
Mission: Mariner 9 was destined to become the first-ever spacecraft to be placed in orbit around another planet. it would make detailed study of Martian surface and atmosphere and map 70% of surface during planned 90-day orbit of planet. Mariner 9 weighed 1,000 kg at launch and carried six scientific experiments: infrared radiometer to measure surface temperature; a spectrometer to investigate composition and structure of atmosphere; infrared interferometer spectrometer to measure surface and atmospheric radiation; S-band occultation experiment to study pressure and structure of atmosphere; TV cameras to transmit low and high-resolution photographs of surface; and experiment to investigate Martian gravity field. Orbit of spacecraft was designed to guarantee it would not hit Mars for at least 17 years, to avoid contamination of planet before studies on surface were made by landing spacecraft. The spacecraft was boosted into 398-million-km direct-ascent trajectory toward Mars.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 148-50 ;
.
Kosmos 426
Spacecraft:  DS-U2-K No. 1
Numbers: 1971 payload #70 ; 1971-052A ; 1538th spacecraft.
Type: Earth/space studies (civil)
Sponsor: Soviet Union
Launch: 5 June 1971 at 18h10 UTC, from Plesetsk Cosmodrome's LC-132/2, by a Kosmos C-1 (11K65M 65014-101).
Orbit: 389 km x 1,996 km x 74° x 109.2 min.
Decayed: 11 May 2002
Mission:
Source: Jonathan McDowell's Master List ; Spacewarn No. 583 ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 153 ; 
.
Soyuz 11
Spacecraft:  Soyuz 7K-OKS s/n 32
Numbers: 1971 payload #71 ; 1971-053A ; 1539th spacecraft.
Type: Piloted spacecraft
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 6 June 1971 at 4h55 UTC, from Baykonur Cosmodrome's LC-1, by an A-2/Soyuz (11A511).
Orbit: 163 km x 237 km  x 51.5° x 88.4 min.
Dockec wiht Salyut 1 during 23 days
Recovered: 30 June 1971.
Mission: Soyuz 11, carrying Georgy Dobrovolsky, Vladislav Volkov and Viktor Patsayev, docked with Sdywt 1 on 7 June at 10:45 Moscow time. They were the first men ever to enter and live onboard a space station. During 3 weeks, cosmonauts checked out systems and conducted experiments. They preplanned program of work, rest, and two hours of exercise per day and reported they were in good health. TV transmissions showed crew performing duties in spacecraft.  The  crew completed 18th day in orbit June 24, surpassing 17-day 17-hr endurance record set by Soyuz 9 in June 1970. 
     Experiments included communications with ground via orbiting Molniya I comsat, astronomical observations, medical experiments, observation of cyclone in Pacific near Japan, and experiments with plants in hothouse on board. The crew reared tadpoles into frogs and grew cabbages and onions.
     On 29 June, cosmonauts completed flight program and prepared for reentry. They transferred equipment to Soyuz 11 and undocked from Salyut 1 at 21:28 Moscow time. Crew reported successful undocking and said all systems were functioning normally. 
     At 1:35 Moscow time, 30 June, spacecraft’s braking engine was fired for prescheduled period. At end of engine firing communication with Soyuz 11 crew ceased. Tass said: “The flight of the descending apparatus ended in a smooth landing in the pre-set area. Landing simultaneously with the ship, a helicopter-borne recovery group, upon opening the hatch, found the crew … in their seats, without any signs of life. The causes of the crew’s death are being investigated.”
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 155-6 ; 
.
SESP 1
Spacecraft:  P70-1
Numbers: 1971 payload #72 ; 1971-054A ; 1540th spacecraft.
Type: Technology
Sponsor: U.S. Air Force
Launch: 8 June 1971 at 14h00 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2 (210).
Orbit: 544 km x 579 km x 90.2° x 95.8 min.
Decayed:
Mission: SESP 1 tested infrared celestial mapping sensor system.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 157 ; 
.
Kosmos 427
Spacecraft:  Zenit-4MK
Numbers: 1971 payload #73 ; 1971-055A ; 1541th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 11 June 1971 at 10h04 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-2/"Voskhod" (11A57).
Orbit: 207 km x 301 km x 72.9°x 89.7 min.
Recovered: 23 June 1971
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics And Aeronautics, 1971, p. 160 ; 
.
Big Bird 1 / KH-9 1 HEXAGON
Spacecraft:  OPS 7809
Numbers: 1971 payload #74 ; 1971-056A ; 1542nd spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 15 June 1971 at 18h41 UTC, from Vandenberg Air Force Base's SLC-4E, by a Titan 3D (23D-1).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 428
Spacecraft:  Zenit-2M
Numbers: 1971 payload #75 ; 1971-057A ; 1543rd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defese ministry
Launch: 24 June 1971 at 8h09 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
..
Nauka
Spacecraft:  [Nauka #6]
Numbers: 1971 payload #76 ; 1971-057G ; 1544th spacecraft.
Type: Science & technology
Sponsor: Soviet Union's Defense ministry
Launch: 24 June 1971 at 8h09 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos
Spacecraft:  Zenit-4M
Numbers: 1971 payload #77 ; 1971 5th loss ; 1545th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 25 June 1971, from Plesetsk Cosmodrome's LC-43, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
LK (N-1 test)
Spacecraft:  Soyuz 7K-LOK
Numbers: 1971 payload #78 ; 1971 6th loss ; 1546th spacecraft.
Type: Piloted spacecraft test (Lunar program)
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 26 June 1971 at 23h15 UTC, from Baykonur Cosmodrome's LC-110L, by a N1 (11A52 6L).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Explorer 44 / Solrad 10
Spacecraft:  SE-C / Solar Explorer C
Numbers: 1971 payload #79 ; 1971-058A ; 1547th spacecraft.
Type: Space environment studies
Sponsor: NASA
Launch: 8 July 1971 at 22h58 UTC, from Wallops Island's LA-3, by a Scout B (S177C).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Meteor 1-9
Spacecraft:  Meteor-M
Numbers: 1971 payload #80 ; 1971-059A ; 1548th spacecraft.
Type: Meteorology
Sponsor: Soviet Union
Launch: 16 July 1971 at 1h40 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-1/"Vostok" (8A92M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Ferret 16
Spacecraft:  OPS 8373
Numbers: 1971 payload #81 ; 1971-060A ; 1549th spacecraft.
Type: Electronic intelligence
Sponsor: U.S. Air Force
Launch: 16 July 1971 at 10h50 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thor 2L 550 / Agena D 2737).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 429
Spacecraft:  Zenit-4M
Numbers: 1971 payload #82 ; 1971-061A  ; 1550th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 20 July 1971 at 10h04 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos
Spacecraft:  Tselina-O
Numbers: 1971 payload #83 ; 1971 7th loss ; 1551st spacecraft.
Type: Electronic intelligence
Sponsor: Soviet Union's Defense ministry
Launch: 22 July 1971, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 430
Spacecraft:  Zenit-4M
Numbers: 1971 payload #84 ; 1971-062A ; 1552nd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 23 July 1971 at 11h02 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Apollo 15 Endeavour
Spacecraft:  Apollo CM-112 / Endeavour
Numbers: 1971 payload #85 ; 1971-063A ; 1553rd spacecraft.
Type: Piloted spacecraft
Sponsor: NASA
Launch: 26 July 1971 at 13h34 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-510).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Apollo 15 Falcon
Spacecraft:  LM 10 Falcon / LM 10
Numbers: 1971 payload #86 ; 1971-063 ; 1554th spacecraft.
Type: Piloted spacecraft
Sponsor: NASA
Launch: 26 July 1971 at 13h34 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-510).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Lunar Rover
Spacecraft:  LRV-1 : Lunar Roving Vehicle
Numbers: 1971 payload #87 ; n/a ; 1555th spacecraft.
Type: Lunar jeep
Sponsor: NASA
Launch: 26 July 1971 at 13h34 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-510).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Apollo 15 Subsatellite
Spacecraft:
Numbers: 1971 payload #88 ; 1971-063D ; 1556th spacecraft.
Type: Lunar studies
Sponsor: NASA
Launch: 26 July 1971 at 13h34 UTC, from Cape Canaveral's LC-39A, by a Saturn V (SA-510).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Molniya 1-18
Spacecraft:  Molniya 1T
Numbers: 1971 payload #89 ; 1971-064A ; 1557th spacecraft.
Type: Communications
Sponsor: Soviet Union
Launch: 28 July 1971 at 3h36 UTC, from Plesetsk Cosmodrome's LC 43/4, by an A-2-e/"Molniya" (8K78M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 431
Spacecraft:  Zenit-2M
Numbers: 1971 payload #90 ; 1971-065A ; 1558th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 30 July 1971 at 8h38 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos
Spacecraft:  DS-P1-Yu No. 33
Numbers: 1971 payload #91 ; 1971 8th loss ; 1559th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 3 August 1971 at 11h00 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 432
Spacecraft:  Zenit-4M
Numbers: 1971 payload #92 ; 1971-066A ; 1560th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 5 August 1971 at 10h04 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
OV 1-20 / OV1-20P
Spacecraft:  SESP 70-2A
Numbers: 1971 payload #93 ; 1971-067A ; 1561st spacecraft.
Type: Science & technology
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
OV 1-21 / OV1-21P
Spacecraft:  SESP 70-2B
Numbers: 1971 payload #94 ; 1971-067B ; 1562nd spacecraft.
Type: Science & technology
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Cannonball 2  / LOADS 2
Spacecraft:  SESP 70-2C / Low Altitude Density Satellite  OAR 901 
Numbers: 1971 payload #95 ; 1971-067C ; 1563rd spacecraft.
Type: Earth upper atmosphere studies
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Musketball 1 / DTDS
Spacecraft:  SESP 70-2D / l OAR 907 Radar Tracked Density Satatellite
Numbers: 1971 payload #96 ; 1971-067D ; 1564th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
LCS 4
Spacecraft: 
Numbers: 1971 payload #97 ; 1971-067E ; 1565th spacecraft.
Type: Radar calibration
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
AVL-802 Mylar Sphere
Spacecraft:  SESP 70-2G / AVL-802G Grid Sphere Drag 
Numbers: 1971 payload #98 ; 1971-067F ; 1566th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: U.S. Air Force 
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Gndsphere 1 / Grid Sphere 7-1 
Spacecraft:  SESP 70-2E / AVL-802E Grid Sphere Drag
Numbers: 1971 payload #99 ; 1971-067G ; 1567th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Gndsphere 2 /  Grid Sphere 7-2
Spacecraft:  SESP 70-2F / AVL-802F Grid Sphere Drag / Grid Sphere 2
Numbers: 1971 payload #100 ; 1971-067H ; 1568th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
RDT 701 / Rigid Sphere 2
Spacecraft:  SESP 70-2J / Lincoln Lab Callibration Sphere
Numbers: 1971 payload #101 ; 1971-067J ; 1569th spacecraft.
Type: Radar calibration
Sponsor: U.S. Air Force
Launch: 7 August 1971 at 0h11 UTC, from Vandenberg Air Force Base's BMRS-A2, by an Atlas F (76F).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 433
Spacecraft:  OGCh
Numbers: 1971 payload #102 ; 1971-068A ; 1570th spacecraft.
Type: Bombardment via space
Sponsor: Soviet Union's Defense ministry
Launch: 9 August 1971 at 23h44 UTC, from Baykonur Cosmodrome's LC-191, by a R-36-0.
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 434
Spacecraft:  T2K No. 3
Numbers: 1971 payload #103 ; 1971-069A ; 1571st spacecraft.
Type: Piloted spacecraft test (Lunar program)
Sponsor: Soviet Union
Launch: 12 August 1971 at 5h30 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/Soyuz (11A511L).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Titan Samos 32 / KH-8 32 GAMBIT
Spacecraft:  OPS 8607
Numbers: 1971 payload #104 ; 1971-070A ; 1572nd spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 12 August 1971 at 15h30 UTC, from Vandenberg Air Force Base's SLC-4W, by a Titan 3B (3B-32 (24B-1) / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Eole
Spacecraft:  EOLE 1 EOLE
Numbers: 1971 payload #105 ; 1971-071A ; 1573rd spacecraft.
Type: Meteorological data relay
Sponsor: France's CNES
Launch: 12 August 1971 at 18h39 UTC, from Wallops Island's LA-3, by a Scout B-1 (S180C).
Orbit:
Decayed:
Mission:
Notes: On 21 June 1964, it was reported that France planned to launch a series of constant-level balloon weather stations in the southern hemisphere and a satellite to “interrogate” them on their findings. Named Project Eole, it was scheduled for 1967. Up to 256 balloons were to be sent aloft, each carrying two kilograms of weather and communications equipment, to remain at fixed altitudes between 5 and 10 kilometres for at least ten days. The French satellite would interrogate each balloon twice during a single pass overhead.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Astronautics and Aeronautics, 1964, p. 218-9 ;
.
Kosmos
Spacecraft:  Zenit-4M
Numbers: 1971 payload #106 ; 1971 9th loss ; 1574th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 19 August 1971, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 435
Spacecraft:  DS-P1-Yu No. 41
Numbers: 1971 payload #107 ; 1971-072A ; 1575th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 27 August 1971 at 10h55 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Luna 18
Spacecraft: E-8-5 No. 407
Numbers: 1971 payload #108 ; 1971-073A ; 1576th spacecraft.
Type: Lunar probe
Sponsor: Soviet Union
Launch: 2 September 1971 at 13h40 UTC, from Baykonur Cosmodrome's LC-81P, by a D-1-e/Proton-K/D (8K82K 256-01 / 11S824).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 436
Spacecraft:  Tselina-O
Numbers: 1971 payload #109 ; 1971-074A ; 1577th spacecraft.
Type: Electronic intelligence
Sponsor: Soviet Union's Defense ministry
Launch: 7 September 1971 at 1h26 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M Yu149-42).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 437
Spacecraft:  Tselina-O
Numbers: 1971 payload #110 ; 1971-075A ; 1578th spacecraft.
Type: Electronic intelligence
Sponsor: Soviet Union's Defense ministry
Launch: 10 September 1971 at 3h36 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 65014-106).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Discoverer 138 / CORONA 1115 / KH-4B
Spacecraft:  OPS 5454
Numbers: 1971 payload #111 ; 1971-076A ; 1579th spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 10 September 1971 at 21h33 UTC, from Vandenberg Air Force Base's SLC-3W, by a Thor-Agena D (Thorad 2L 567 / Agena D 1662).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; NRO's Corona : JPL's Corona :
.
Hitchhiker 29
Spacecraft:  OPS 768 / EHH B21
Numbers: 1971 payload #112 ; 1971-076B ; 1580th spacecraft.
Type: Electronic intelligence
Sponsor: U.S. Air Force
Launch: 10 September 1971 at 21h33 UTC, from Vandenberg Air Force Base's SLC-3W, by a Thor-Agena D (Thorad 2L 567 / Agena D 1662).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 438
Spacecraft:  Zenit-4MK
Numbers: 1971 payload #113 ; 1971-077A ; 1581st spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 14 September 1971 at 12h57 UTC, from Plesetsk. Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 439
Spacecraft: Zenit-2M
Numbers: 1971 payload #114 ; 1971-078A ; 1582nd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 21 September 1971 at 12h00 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 440
Spacecraft:  DS-P1-I No. 10
Numbers: 1971 payload #115 ; 1971-079A ; 1583rd spacecraft.
Type: Antimissile technologies
Sponsor: Soviet Union's Defense ministry
Launch: 24 September 1971 at 10h30 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
MS-F2 / Shinsei
Spacecraft: 
Numbers: 1971 payload #116 ; 1971-080A ; 1584th spacecraft.
Type: Earth-space studies
Sponsor: Japan's ISAS
Launch: 28 September 1971 at 4h00 UTC, from Kagoshima Space Center's M, by a Mu-3S (M-4S-3).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 441
Spacecraft:  Zenit-4M
Numbers: 1971 payload #117 ; 1971-081A ; 1585th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 28 September 1971 at 7h40 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Luna 19
Spacecraft:  E-8LS No. 202
Numbers: 1971 payload #118 ; 1971-082A ; 1586th spacecraft.
Type: Lunar probe
Sponsor: Soviet Union (Korolev's Design Bureau)
Launch: 28 September 1971 at 10h00 UTC, from Baykonur Cosmodrome's LC-81P, by a D-1-e/Proton-K/D (8K82K 257-01 / 11S824).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
OSO 7
Spacecraft:  OSO H ; Orbiting Solar Observatory
Numbers: 1971 payload #119 ; 1971-083A ; 1587th spacecraft.
Type: Solar observatory
Sponsor: NASA
Launch: 29 September 1971 at 9h45 UTC, from Cape Canaveral's LC-17A, by a Delta DSV-3N (Thor Delta N 565 / Delta 85).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
TETR 3
Spacecraft:  TETR D ; Test and Training Satellite 4
Numbers: 1971 payload #120 ; 1971-083B ; 1588th spacecraft.
Type: Technology
Sponsor: NASA
Launch: 29 September 1971 at 9h45 UTC, from Cape Canaveral's LC-17A, by a Delta DSV-3N (Thor Delta N 565 / Delta 85).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 442
Spacecraft:  Zenit-4M
Numbers: 1971 payload #121 ; 1971-084A ; 1589th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 29 September 1971 at 11h31 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 443
Spacecraft:  Zenit-2M
Numbers: 1971 payload #122 ; 1971-085A ; 1590th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 7 October 1971 at 12h28 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Nauka
Spacecraft:  [Nauka #7]
Numbers: 1971 payload #123 ; 1971-085F ; 1591st spacecraft.
Type: Science & technology
Sponsor: Soviet Union's Defense ministry
Launch: 7 October 1971 at 12h28 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 444
Spacecraft:  Strela-1M
Numbers: 1971 payload #124 ; 1971-086A ; 1592nd spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 445
Spacecraft:  Strela-1M
Numbers: 1971 payload #125 ; 1971-086B ; 1593rd spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 446
Spacecraft:  Strela-1M
Numbers: 1971 payload #126 ; 1971-086C ; 1594th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
#.
Kosmos 447
Spacecraft:  Strela-1M
Numbers: 1971 payload #127 ; 1971-086D ; 1595th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 448
Spacecraft:  Strela-1M
Numbers: 1971 payload #128 ; 1971-086E ; 1596th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 449
Spacecraft:  Strela-1M
Numbers: 1971 payload #129 ; 1971-086F ; 1597th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 450
Spacecraft: Strela-1M
Numbers: 1971 payload #130 ; 1971-086G ; 1598th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 451
Spacecraft:  Strela-1M
Numbers: 1971 payload #131 ; 1971-086H ; 1599th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 13 October 1971 at 13h40 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-104).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
DMSP 1
Spacecraft:  DMSP 4527 (SV-2) / DMSP-Block-5B F1
Defense Meteorological Satellite Program
Numbers: 1971 payload #132 ; 1971-087A ; 1600th spacecraft.
Type: Meteorology
Sponsor: U.S. Air Force
Launch: 14 October 1971 at 7h51 UTC, from Vandenberg Air Force Base's SLC-10W, by a Thor-Burner 2A (159).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 452
Spacecraft:  Zenit-4M
Numbers: 1971 payload #133 ; 1971-088A ; 1601st spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 14 October 1971 at 9h07 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
SESP-ASTEX 1
Spacecraft:  P71-2 / SESP 71-2 (Space Test Program)
Numbers: 1971 payload #134 ; 1971-089A ; 1602nd spacecraft.
Type: Technology
Sponsor: U.S. Air Force
Launch: 17 October 1971 at 13h36 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thorad 2L 570 / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 453
Spacecraft: DS-P1-Yu No. 44
Numbers: 1971 payload #135 ; 1971-090A ; 1603rd spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 19 October 1971 at 12h40 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
ITOS B
Spacecraft: 
Numbers: 1971 payload #136 ; 1971-091A ; 1604th spacecraft.
Type: Meteorology
Sponsor: NOAA
Launch: 21 October 1971 at 11h32 UTC, from Vandenberg Air Force Base's SLC-2E, by a Delta DSV-3N6 (Thor Delta N6 572 / Delta 86).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Titan Samos 33 / KH-8 33 GAMBIT
Spacecraft:  OPS 7616 
Numbers: 1971 payload #137 ; 1971-092A ; 1605th spacecraft.
Type: Reconnaissance
Sponsor: U.S. National Reconnaissance Office
Launch: 23 October 1971 at 17h16 UTC, from Vandenberg Air Force Base's SLC-4W, by a Titan 3B (Titan 24B 3B-33 (24B-2) / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Prospero / X-3
Spacecraft: 
Numbers: 1971 payload #138 ; 1971-093A ; 1606th spacecraft.
Type: Micrometeorids studies
Sponsor: United Kingdom
Launch: 28 October 1971 at 4h09 UTC, from Woomera's LA-5B, by a Black Arrow (R-3).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 454
Spacecraft:  Zenit-4M
Numbers: 1971 payload #139 ; 1971-094A ; 1607th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 2 November 1971 at 14h24 UTC, from Plesetsk Cosmodrome's LC-41/1, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
DSCS 2-1 / DSCS II A-1
Spacecraft: OPS 9431
Numbers: 1971 payload #140 ; 1971-095A ; 1608th spacecraft.
Type: Communications
Sponsor: U.S. Air Force
Source: A. Parsch
Launch: 3 November 1971 at 3h09 UTC, from Cape Canaveral Air Force Base's LC-40, by a Titan 3C (Titan 23C-3, Transtage-21).
Orbit:
Decayed:
Mission: Retired in June 1973.
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Jonathan Space Report No. 495 ;
.
DSCS 2-2 / DSCS II A-2
Spacecraft:  OPS 9432
Numbers: 1971 payload #141 ; 1971-095B ; 1609th spacecraft.
Type: Communications
Sponsor: U.S. Air Force

Source: A. Parsch
Launch: 3 November 1971 at 3h09 UTC, from Cape Canaveral Air Force Base's LC-40, by a Titan 3C (Titan 23C-3, Transtage-21).
Orbit:
Decayed:
Mission: Retired in 1980s?
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ; Jonathan Space Report No. 495 ;
.
STV 4
Spacecraft: 
Numbers: 1971 payload #142 ; 1971 10th loss ; 1610th spacecraft.
Type: Technology's
Sponsor: ELDO
Launch: 5 November 1971 at 13h00 UTC, from Kourou Space Center's ELE, by an Europa II (F-11).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Explorer 45 / SSS 1
Spacecraft:  SSS A / S-Cubed A
Numbers: 1971 payload #143 ; 1971-096A ; 1611th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: NASA/Italy
Launch: 15 November 1971 at 5h52 UTC, from San Marco platform, by a Scout B (S163CR).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 455
Spacecraft:  DS-P1-Yu No. 54
Numbers: 1971 payload #144 ; 1971-097A ; 1612th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 17 November 1971 at 11h10 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 456
Spacecraft:  Zenit-4M
Numbers: 1971 payload #145 ; 1971-098A ; 1613th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 19 November 1971 at 12h00 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 457
Spacecraft:  Sfera
Numbers: 1971 payload #146 ; 1971-099A ; 1614th spacecraft.
Type: Geodesy
Sponsor: Soviet Union
Launch: 20 November 1971 at 18h00 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 47114-106).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos
Spacecraft: DS-P1-I?
Numbers: 1971 payload #147 ; 1971 11th loss ; 1615th spacecraft.
Type: Antimissile technologies
Sponsor: Soviet Union's Defense ministry
Launch: 24 November 1971, from Kapustin Yar LC86/4, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Molniya 2-1
Spacecraft:  Molniya 2A
Numbers: 1971 payload #148 ; 1971-100A ; 1616th spacecraft.
Type: Communications
Sponsor: Soviet Union
Launch: 24 November 1971 at 9h36 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-2-e/"Molniya" (8K78M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 458
Spacecraft:  DS-P1-Yu No. 53
Numbers: 1971 payload #149 ; 1971-101A ; 1617th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 29 November 1971 at 10h10 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 459
Spacecraft:  DS-P1-M No. 5
Numbers: 1971 payload #150 ; 1971-102A ; 1618th spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 30 November 1971 at 17h30 UTC, from Plesetsk Cosmodrome's LC-132/1, by a Kosmos C-1 (11K65M 65027-110).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 460
Spacecraft:  Tselina-O
Numbers: 1971 payload #151 ; 1971-103A ; 1619th spacecraft.
Type: Electronic intelligence 
Sponsor: Soviet Union's Defense ministry
Launch: 30 November 1971 at 16h48 UTC, from Plesetsk Cosmdorome's LC-132, by a Kosmos C-1 (11K65M 65017-101).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Interkosmos 5
Spacecraft:  DS-U2-IK No. 2 / IK- 5
Numbers: 1971 payload #152 ; 1971-104A ; 1620th spacecraft.
Type: Earth upper atmosphere studies (civil)
Sponsor: Soviet Union + East-european states
Launch: 2 December 1971 at 8h25 UTC, from Kapustin Yar Cosmodrome's LC-86/4, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 461
Spacecraft:  DS-U2-MT No. 1
Numbers: 1971 payload #153 ; 1971-105A ; 1621st spacecraft.
Type: Earth/space studies (civil)
Sponsor: Soviet Union
Launch: 2 December 1971 at 17h30 UTC, from Plesetsk Cosmodrome's LC-132/1, by a Kosmos C-1 (11K65M 47119-109).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos
Spacecraft:  Zenit-2M
Numbers: 1971 payload #154 ; 1971 12th loss ; 1622nd spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 3 December 1971, from Plesetsk Cosmodrome's LC-43, by an A-2/"Voskhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Nauka
Spacecraft:  [Nauka #8]
Numbers: 1971 payload #155 ; 1971 13th loss ; 1623rd spacecraft.
Type: Science & technology
Sponsor: Soviet Union's Defense ministry
Launch: 3 December 1971, from Plesetsk Cosmodrome's LC-43, by an A-2/"Voshhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 462
Spacecraft:  I2P
Numbers: 1971 payload #156 ; 1971-106A ; 1624th spacecraft.
Type: Antisatellite technologies
Sponsor: Soviet Union's Defense ministry
Launch: 3 December 1971 at 13h12 UTC, from Baykonur Cosmodrome's LC-90, by a F-1/Tsyklon 2.
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
CANYON 4
Spacecraft:  Program 827's AFP-827 F4 (7504)
Numbers: 1971 payload #157 ; 1971 14th loss ; 1625th spacecraft.
Type: Signals intelligence
Sponsor: United States' NRO / National Reconnaissance Office
Launch: 4 December 1971 at 22h30 UTC, from Cape Canaveral's LC-13, by an Atlas-Agena D (Atlas SLV-3A 5503A / Agena D 2804).
Orbit: Geostationary
Decayed:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;  Jonathan Space Report No. 501 ;
.
D-2A Polaire
Spacecraft: 
Numbers: 1971 payload #158 ; 1971 15th loss ; 1626th spacecraft.
Type: Earth upper atmosphere studies 
Sponsor: France's CNES
Launch: 5 December 1971 at 16h20 UTC, from Kourou Space Center's ELD, by a Diamant B (No. 4).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 463
Spacecraft:  Zenit-4M
Numbers: 1971 payload #159 ; 1971-107A ; 1627th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 6 December 1971 at 9h50 UTC, from Baykonur Cosmodrome's LC-31, by an A-2/"Voshhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 464
Spacecraft:  Zenit-4M
Numbers: 1971 payload #160 ; 1971-108A ; 1628th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 10 December 1971 at 11h02 UTC, from Plesetsk Cosmodrome's LC-43/3, by an A-2/"Voshhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Ariel 4 / UK 4
Spacecraft: 
Numbers: 1971 payload #161 ; 1971-109A ; 1629th spacecraft.
Type: Earth upper atmosphere studies
Sponsor: United Kingdom
Launch: 11 December 1971 at 20h47 UTC, from Vandenberg Air Force Base's SLC-5, by a Scout B-1 (S183C).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
NOSS / "White Cloud"
Spacecraft:  OPS 7898 P/L 1 / NRL PL171
Numbers: 1971 payload #162 ; 1971-110A ; 1630th spacecraft.
Type: Ocean surveillance
Sponsor: U.S. Navy
Launch: 14 December 1971 at 12h13 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thorad 2L 568 / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Subsatellite
Spacecraft:  OPS 7898 P/L 2 / NRL PL172
Numbers: 1971 payload #163 ; 1971-110B ; 1631st spacecraft.
Type: Ocean surveillance
Sponsor: U.S. Navy
Launch: 14 December 1971 at 12h13 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thorad 2L 568 / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Subsatellite
Spacecraft:  OPS 7898 P/L 3 / NRL PL173
Numbers: 1971 payload #164 ; 1971-110C ; 1632th spacecraft.
Type: Ocean surveillance
Sponsor: U.S. Navy
Launch: 14 December 1971 at 12h13 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thorad 2L 568 / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Subsatellite
Spacecraft:  OPS 7898 P/L 4 / NRL PL174
Numbers: 1971 payload #165 ; 1971-110D ; 1633rd spacecraft.
Type: Ocean surveillance
Sponsor: U.S. Air Force
Launch: 14 December 1971 at 12h13 UTC, from Vandenberg Air Force Base's SLC-1W, by a Thor-Agena D (Thorad 2L 568 / Agena D).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 465
Spacecraft:  Tsiklon
Numbers: 1971 payload #166 ; 1971-111A ; 1634th spacecraft.
Type: Navigation
Sponsor: Soviet Union's Defense ministry
Launch: 15 December 1971 at 4h33 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M  65017-108).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 466
Spacecraft: Zenit-4M
Numbers: 1971 payload #167 ; 1971-112A ; 1635th spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 16 December 1971 at 9h50 UTC, from Baykonur Cosmdrome's LC-31, by an A-2/"Voshhod" (11A57).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 467
Spacecraft:  DS-P1-Yu No. 45
Numbers: 1971 payload #168 ; 1971-113A ; 1636th spacecraft.
Type: Military technologies
Sponsor: Soviet Union's Defense ministry
Launch: 17 December 1971 at 10h40 UTC, from Plesetsk Cosmodrome's LC-133/1, by a Kosmos B-1 (11K63).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 468
Spacecraft:  Strela-2
Numbers: 1971 payload #169 ; 1971-114A ; 1637th spacecraft.
Type: Communications (store/dump)
Sponsor: Soviet Union's Defense ministry
Launch: 17 December 1971 at 12h57 UTC, from Plesetsk Cosmodrome's LC-132, by a Kosmos C-1 (11K65M 65014-102).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Molniya 1-19
Spacecraft:  Molniya 1U
Numbers: 1971 payload #170 ; 1971-115A ; 1638th spacecraft.
Type: Communications
Sponsor: Soviet Union
Launch: 19 December 1971 at 23h02 UTC, from Plesetsk Cosmodrome's LC-41/1, by an A-2-e/"Molniya" (8K78M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Intelsat 4B
Spacecraft:  Intelsat IV F3
Numbers: 1971 payload #171 ; 1971-116A ; 1639th spacecraft.
Type: Communications
Sponsor: Intelsat
Launch: 20 December 1971 at 1h10 UTC, from Cape Canaveral's LC-36A, by an Atlas-Centaur (Atlas SLV-3C AC-26 / Centaur D-1A 5006C).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 469
Spacecraft:  US-A
Numbers: 1971 payload #172 ; 1971-117A ; 1640th spacecraft.
Type: Ocean surveillance ("RORSAT")
Sponsor: Soviet Union's Defense ministry
Launch: 25 December 1971 at 11h31 UTC, from Baykonur Cosmodrome's LC-90, by a F-1/Tsyklon 2.
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Kosmos 470
Spacecraft:  Zenit-4MT
Numbers: 1971 payload #173 ; 1971-118A ; 1641st spacecraft.
Type: Reconnaissance
Sponsor: Soviet Union's Defense ministry
Launch: 27 December 1971 at 14h09 UTC, from Plesetsk Cosmodrome's LC-43/4, by an A-2/Soyuz (11A511M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Oreol 1 (Aureole 1)
Spacecraft:  DS-U2-GKA No. 1
Numbers: 1971 payload #174 ; 1971-119A ; 1642nd spacecraft.
Type: Earth upper atmosphere studies
Sponsor: France
Launch: 27 December 1971 at 19h00 UTC, from Plesetsk Cosmodrome's LC-132/2, by a Kosmos C-1 (11K65M 65014-103).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
.
Meteor 1-10
Spacecraft:  Meteor-MV
Numbers: 1971 payload #175 ; 1971-120A ; 1643rd spacecraft.
Type: Meteorology
Sponsor: Soviet Union
Launch: 29 December 1971 at 10h48 UTC, from Plesetsk Cosmodrome's LC-4/1, by an A-1/"Vostok" (8A92M).
Orbit:
Decayed:
Mission:
Source: Jonathan McDowell's Master List ; Mark Wade’s Encyclopedia Astronautica ; National Space Science Data Center's ; TRW Space Log ;
..
© Claude Lafleur, 2004-10 Mes sites web: claudelafleur.qc.ca