SY 4

Shiyan Weixing-4 (SY-4)

China (PR)

Spacecraft nº:

Chinese spacecraft nº: 172

SY = Shiyan (Experimental)

Launch data:

Designation	37931 / 11068B
Launch date	20 Nov 2011 - 00:15:04 UT
Launch site	Jiuquan, 603
Launch vehicle	CZ-2D (Y19)
Mission	Government: Remote sensing
Sun-synchronous LEO Earth orbit:
Perigee / Apogee	785 x 803 km
Eccentricity	1,26E-03
Inclination	98.4 deg
Period	100.74 min

Launched together with CX 1

Spacecraft data:

Prime manufacturer	Chinese Research Institute of Space Technology
Platform
Operator	Chinese Academy of Space Technology (CAST)
Mass at launch	204 kg
Dry Mass	kg
Basic shape
Dimension (m)
Equipment
Solar array
Stabilization
Propulsion
DC power
Design lifetime

Description:

The Shiyan spacecraft will study the environment and test new space technologies. Shiyan 4 was developed by the Chinese Research Institute of Space Technology.

Mission details:

China launched a Chang Zheng (Long March) 2D from its northern Jiuquan spaceport on Nov 20, 2011 carrying Shiyan weixing 4 (Experimental Satellite 4). The smaller 'Chuanxin yihao 03 xing' (Chuanxin-1 satellite 3) was also placed in orbit, together with the CZ-2D second stage rocket.
CX-1 03 and SY-4 are in 783 x 804 km x 98.5 deg orbits.

Ref.: #7(JR651), #226, #228 - update: 08.02.12