Key statistics
Satellite SJ-28 at a glance.
Uptime
20
Days in orbit
Revolutions
≈ 1.0
Per day
Orbit
OTHER
Other
Inclination
5.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for SJ-28.
Object identification
Identified? True
Debris? False
Object name: SJ-28
International designator: 2025-277A
Object number (NORAD): 66549
Object ID (CCSDS): 66549
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
Orbital parameters
Period: 1436.136 minutes
Inclination: 5.0035 deg
SMA: 42165.496 km
Apoapsis: 35791.679 km
Periapsis: 35783.043 km
RAAN: 274.8608 deg
Eccentricy: 0.00010241
Argument of periapsis: 136.6654 deg
Mean anomaly: 110.5088 deg
Mean motion: 1.00269059 rev/day
Mean motion (dot): -0.0000033 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Dec. 19, 2025, 2:08 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 18, 2025, 9:09 p.m. UTC
TLE line 0: 0 SJ-28
TLE line 1: 1 66549U 25277A 25352.88184690 -.00000330 00000-0 00000-0 0 9991
TLE line 2: 2 66549 5.0035 274.8608 0001024 136.6654 110.5088 1.00269059 340
Live tracking on map
Real-time ground track for satellite SJ-28.
In-orbit conjunctions
There are no conjunctions computed for SJ-28, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Classified experimental Chinese satellite of unknown purposes.
SJ-28 was lifted into orbit during the mission ‘Long March 7A | Shijian 28’, on board a Long March 7A space rocket.
The launch took place on Nov. 30, 2025, 12:20 p.m. from 201.
For more information about the launch, click the button.
Long March 7A | Shijian 28
Agency: N/A
Status: Launch Successful
Launch date: Nov. 30, 2025, 12:20 p.m. UTC
Rocket: Long March 7A
Launch pad: 201
Location: Wenchang Space Launch Site, People's Republic of China
...
Latest news about this satellite
China launches classified Shijian-28 spacecraft, reusable Zhuque-3 rocket faces delay
China launched the latest in a series of experimental, often opaque satellites Sunday, while the debut flight of the commercial Zhuque-3 faces a delay. The post China launches classified Shijian-28 spacecraft, reusable Zhuque-3 rocket faces delay appeare...
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