Key statistics
Satellite TJS-21 at a glance.
Uptime
23
Days in orbit
Revolutions
≈ 2.0
Per day
Orbit
OTHER
Other
Inclination
63.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for TJS-21.
Object identification
Identified? True
Debris? False
Object name: TJS-21
International designator: 2025-269A
Object number (NORAD): 66586
Object ID (CCSDS): 66586
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
Orbital parameters
Period: 717.963 minutes
Inclination: 63.269 deg
SMA: 26560.01 km
Apoapsis: 38257.997 km
Periapsis: 2105.754 km
RAAN: 162.5612 deg
Eccentricy: 0.6805766
Argument of periapsis: 269.7806 deg
Mean anomaly: 18.6565 deg
Mean motion: 2.00567425 rev/day
Mean motion (dot): 0.00001083 rev/day2
B* drag term: -0.044965385 1/REarth
Two-line elements (TLE)
Creation date: Dec. 11, 2025, 10:54 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 10, 2025, 5:31 p.m. UTC
TLE line 0: 0 TJS-21
TLE line 1: 1 66586U 25269A 25344.73011788 .00001083 00000-0 -44965-1 0 9990
TLE line 2: 2 66586 63.2690 162.5612 6805766 269.7806 18.6565 2.00567425 392
Live tracking on map
Real-time ground track for satellite TJS-21.
In-orbit conjunctions
There are no conjunctions computed for TJS-21, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Chinese classified satellite claimed to be for communication technology test purposes. Actual mission not known.
TJS-21 was lifted into orbit during the mission ‘Long March 3B/E | TJSW-21’, on board a Long March 3B/E space rocket.
The launch took place on Nov. 21, 2025, 10:55 a.m. from Launch Complex 2 (LC-2).
For more information about the launch, click the button.
Long March 3B/E | TJSW-21
Agency: N/A
Status: Launch Successful
Launch date: Nov. 21, 2025, 10:55 a.m. UTC
Rocket: Long March 3B/E
Launch pad: Launch Complex 2 (LC-2)
Location: Xichang Satellite Launch Center, People's Republic of China
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Latest news about this satellite
China launches TJS-21 towards Molniya orbit, lofts trio of Shijian-30 spacecraft
China conducted a pair of launches last week, adding new spacecraft to its opaque TJS and Shijian satellite series. The post China launches TJS-21 towards Molniya orbit, lofts trio of Shijian-30 spacecraft appeared first on SpaceNews.
Launch Roundup: Innospace to debut new rocket, SpaceX to launch five Falcon 9 missions
Another busy week of launches has arrived, with SpaceX planning to launch five Falcon 9… The post Launch Roundup: Innospace to debut new rocket, SpaceX to launch five Falcon 9 missions appeared first on NASASpaceFlight.com.
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