Key statistics
Satellite SHIYAN 4 (SY-4) at a glance.
Uptime
5081
Days in orbit
Revolutions
≈ 14.3
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
98.7
Latest
Satellite identification and parameters
Extended collection of information and parameters for SHIYAN 4 (SY-4).
Object identification
Identified? True
Debris? False
Object name: SHIYAN 4 (SY-4)
International designator: 2011-068B
Object number (NORAD): 37931
Object ID (CCSDS): 37931
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.629 minutes
Inclination: 98.7112 deg
SMA: 7166.53 km
Apoapsis: 805.415 km
Periapsis: 771.376 km
RAAN: 304.6245 deg
Eccentricy: 0.00237489
Argument of periapsis: 134.7222 deg
Mean anomaly: 284.8757 deg
Mean motion: 14.30999087 rev/day
Mean motion (dot): 0.00000301 rev/day2
B* drag term: 0.00013099513 1/REarth
Two-line elements (TLE)
Creation date: Oct. 18, 2025, 2:17 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 17, 2025, 11:23 p.m. UTC
TLE line 0: 0 SHIYAN 4 (SY-4)
TLE line 1: 1 37931U 11068B 25290.97484935 .00000301 00000-0 13100-3 0 9998
TLE line 2: 2 37931 98.7112 304.6245 0023749 134.7222 284.8757 14.30999087724254
Live tracking on map
Real-time ground track for satellite SHIYAN 4 (SY-4).
In-orbit conjunctions
There are no conjunctions computed for SHIYAN 4 (SY-4), at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
SHIYAN 4 (SY-4) was lifted into orbit during the mission ‘Long March 2D | Shiyan Weixing 4 & Chuang Xin 1C’, on board a Long March 2D space rocket.
The launch took place on Nov. 20, 2011, 12:15 a.m. from Launch Area 4 (SLS-2 / 603).
For more information about the launch, click the button.
Long March 2D | Shiyan Weixing 4 & Chuang Xin 1C
Agency: N/A
Status: Launch Successful
Launch date: Nov. 20, 2011, 12:15 a.m. UTC
Rocket: Long March 2D
Launch pad: Launch Area 4 (SLS-2 / 603)
Location: Jiuquan Satellite Launch Center, People's Republic of China
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
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