Key statistics
Satellite OBJECT B at a glance.
Uptime
14
Days in orbit
Revolutions
≈ 15.3
Per day
Orbit
LEO
Low Earth Orbit
Inclination
80.2
Latest
Satellite identification and parameters
Extended collection of information and parameters for OBJECT B.
Object identification
Identified? True
Debris? False
Object name: OBJECT B
International designator: 2025-227B
Object number (NORAD): 65946
Object ID (CCSDS): 65946
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
Orbital parameters
Period: 94.285 minutes
Inclination: 80.1542 deg
SMA: 6862.073 km
Apoapsis: 498.694 km
Periapsis: 469.183 km
RAAN: 84.2708 deg
Eccentricy: 0.0021503
Argument of periapsis: 350.8849 deg
Mean anomaly: 9.1988 deg
Mean motion: 15.27283851 rev/day
Mean motion (dot): 0.00011638 rev/day2
B* drag term: 0.00043162821 1/REarth
Two-line elements (TLE)
Creation date: Oct. 27, 2025, 2:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 26, 2025, 10:59 p.m. UTC
TLE line 0: 0 OBJECT B
TLE line 1: 1 65946U 25227B 25299.95818095 .00011638 00000-0 43163-3 0 9999
TLE line 2: 2 65946 80.1542 84.2708 0021503 350.8849 9.1988 15.27283851 2075
Live tracking on map
Real-time ground track for satellite OBJECT B.
In-orbit conjunctions
There are no conjunctions computed for OBJECT B, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Chinese satellite reported to be for "new optical imaging technological demonstration" purposes. Actual usage not known.
OBJECT B was lifted into orbit during the mission ‘Long March 2D | Shiyan 31’, on board a Long March 2D space rocket.
The launch took place on Oct. 13, 2025, 10 a.m. from Launch Area 4 (SLS-2 / 603).
For more information about the launch, click the button.
Long March 2D | Shiyan 31
Agency: N/A
Status: Launch Successful
Launch date: Oct. 13, 2025, 10 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
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Following the successful flight of Starship Flight 11 on Monday, SpaceX is set to continue… The post Launch Roundup: Falcon 9 to launch six missions in one week appeared first on NASASpaceFlight.com.
Surprise Chinese launch sends Shiyan-31 experimental satellite into orbit
China conducted an orbital launch Monday with no apparent advance indication, successfully sending the Shiyan-31 remote sensing test satellite into orbit. The post Surprise Chinese launch sends Shiyan-31 experimental satellite into orbit appeared first o...
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