Chang'e 2
Spacecraft: |
Chang'e is named after a mythical
Chinese goddess who flew to the Moon. |
Chronologies: |
2010 payload #79 ; 2010-50A ; 6,933th spacecraft. |
Type: |
Planetary Probe (Moon) |
Families: |
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Ranks: |
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Sponsor: |
China |
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Credit: China
Daily
Launch: |
1 October 2010 at 11h00 UT, from
Xichang Satellite Launch Center, by a Chang
Zheng 3C. |
Orbit: |
Initial Earth orbit: 200 km x 380,000 km
Initial Lunar orbit: 119 km x 8,599 km
Solar orbit (2012): 1.02 AU x 1.03 AU x 0.2° |
Mission: |
Chang'e 2 is a 2,480-kg lunar-lunar probe,
the second Chinese planetary mission. It enters lunar orbit on 6 October
2010 at around 3h14 UT to test key technology involved in a soft-landing
(Chang'e-3). The probe is
designed to observe the Moon for at least six months, but it carries enough
fuel to operate much longer. From a lunar elliptical orbit with the closest
point only 15 km, it takes high-resolution photos of the Bay of Rainbows
area, the expected landing site of Chang'e-3.
The $134 million
spacecraft was first built as a ground spare for Chang'e 1, in case that
mission ran into problems. Instead of building a new probe, China bolted
improved science instruments and cameras on the spare and launched it on
a more powerful rocket. The probe was launced on the 61st anniversary of
Communist rule there, but spokesmen denied that the launch time was chosen
to mark the National Day, saying the launch date was purely coincidental
and determined by other factors. The mission planners have three possible
scenarios for how Chang'e-2 will end its mission: itt might crash on the
Moon, fly further into deeper space, or come back to Earth. In its second
stage of its lunar exploration program, China plans to send three spacecraft
to the Moon, including Chang'e-3, which is slated to soft-land in about
2013, and Chang'e-4 as a backup for Chang'e-3.
By 1 April 2011,
Chang'e-2 has been safely operating for 180 days in lunar orbit and has
reached its six-month designed life. Its system status is normal and stable,
and the craft has fully realized its given project targets. It was then
sent out of lunar orbit into deep space. On 13 December 2012, Chang'e-2
made a remarkable 3.2 km flyby of minor planet (4179) Toutatis at 8h30:09
UT and returned images of the asteroid. By early 2014, it has traveled
more than 70 million km into deep space in good condition, so far the longest
voyage of a Chinese spacecraft. Chang'e-2 is expected to travel as far
as 300 million km from Earth, after which it will return to perigee of
about 7 million km around 2029. |
Source: |
Jonathan
Space Report No. 633,
672
;
Spacewarn No. 684
; Spaceflight Now's 2
Oct 10, 4
Oct 10 , 6
Oct 10, 17
Dec 12 ; China Daily's 29
Sep 10, 29
Sep 10, 1
Oct 10, 1
Oct 10, 1
Oct 10, 1
Oct 10, 2
Oct 10, 2
Oct 10, 6
Oct 10, 9
Oct 10, 9
Nov 2010, 2
Apr 11, 15
Dec 12 ; Xinhua's 29
Sep 10, 29
Sep 10, 30
Sep 10, 1
Oct 10, 1
Oct 10, 1
Oct 10, 1
Oct 10, 1
Oct 10, 2
Oct 10, 2
Oct 10, 3
Oct 10, 6
Oct 10, 6
Oct 10, 8
Oct 10, 13
Oct 10, 8
Nov 10, 8
Nov 10, 23
Nov 10, 20
Dec 10, 20
Dec 10, 20
Dec 10, 1
Apr 11, 2
Apr 11, 9
Jun 11, 27
Aug 11, 30
Aug 11, 21
Sep 11, 21
Sep 11, 6
Feb 12, 6
Feb 12, 7
Feb 12, 13
Mar 12, 15
Dec 12,14
Feb 14 ; |
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