SJ

Shijian-12 (SJ-12)

China (PR)

Spacecraft nº:

Chinese spacecraft nº: 142

Designation	36596 / 10027A
Launch date	15 Jun 2010 - 01:39 UT
Launch site	Jiuquan,
Launch vehicle	CZ-2D
Mission	Government: Technology Development
Sun-Synchronous LEO Earth orbit on Jun 15.11:
Perigee / Apogee	575 x 597 km
Eccentricity	1.58E-03
Inclination	97.70 deg
Period	96.40 min

Prime contractor	Chinese Academy of Space Technology (CAST)
Platform
Operator	Chinese Academy of Space Technology (CAST)
Mass at launch	kg
Dry Mass	kg
Basic shape
Dimension (m)
Solar array
Stabilization
DC power
Design lifetime	still active

Conduct various technology and environmental experiments.
The SJ-12 (shijian shier hao weixing, Practice Satellite 12) was launched from Jiuquan space center on Jun 15 into a 575 x 597 km x 97.7 deg orbit; the CZ-2D final stage ended up in a 559 x 663 km x 97.7 deg orbit.
China's Shi Jian 12 satellite, which was launched into a 600 km polar orbit on Jun 15, 2010 carried out a close pass with the SJ-6/3A (Shijian liuhao sanzu A xing) satellite on Aug 19, 2010. Igor Lissov has pointed out that SJ-6/3A showed a very small orbital period increase following the pass, indicating that the spacecraft may have come into physical contact. On Sep 21 SJ-12 was in a 580 x 606 km x 97.8 deg orbit.
Dec. 2010: SJ-12 satellite has begun a rendezvous with the SJ-6/4A (SSN 37180?) satellite, following its inspection of SJ-6/3A (08053B) on Aug 19, 2010.

CZ-2D launch cover"

Ref.: #7(JR629,632,635), #226, #411 - update: 23.08.25