Key statistics
Satellite SZ-21 at a glance.
Uptime
14
Days in orbit
Revolutions
≈ 15.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
41.5
Latest
Satellite identification and parameters
Extended collection of information and parameters for SZ-21.
Object identification
Identified? True
Debris? False
Object name: SZ-21
International designator: 2025-246A
Object number (NORAD): 66263
Object ID (CCSDS): 66263
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
Orbital parameters
Decay date: Nov. 14, 2025
Period: 92.404 minutes
Inclination: 41.4665 deg
SMA: 6770.522 km
Apoapsis: 399.659 km
Periapsis: 385.115 km
RAAN: 102.3779 deg
Eccentricy: 0.00107401
Argument of periapsis: 288.2195 deg
Mean anomaly: 71.7474 deg
Mean motion: 15.58366267 rev/day
Mean motion (dot): 0.00013824 rev/day2
B* drag term: 0.00018037201 1/REarth
Two-line elements (TLE)
Creation date: Nov. 28, 2025, 8:32 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Nov. 28, 2025, 2:51 p.m. UTC
TLE line 0: 0 SZ-21
TLE line 1: 1 66263U 25246A 25332.61902897 .00013824 00000-0 18037-3 0 9999
TLE line 2: 2 66263 41.4665 102.3779 0010740 288.2195 71.7474 15.58366267258135
Live tracking on map
Satellite SZ-21 has decayed and is no longer in orbit. No tracking available.
In-orbit conjunctions
Satellite SZ-21 has decayed and is no longer in orbit. No conjunctions available.
Associated space launch
Tenth crewed flight to the Chinese space station.
SZ-21 was lifted into orbit during the mission ‘Long March 2F/G | Shenzhou 21’, on board a Long March 2 space rocket.
The launch took place on Oct. 31, 2025, 3:44 p.m. from Launch Area 4 (SLS-1 / 921).
For more information about the launch, click the button.
Long March 2F/G | Shenzhou 21
Agency: China National Space Administration
Status: Launch Successful
Launch date: Oct. 31, 2025, 3:44 p.m. UTC
Rocket: Long March 2
Launch pad: Launch Area 4 (SLS-1 / 921)
Location: Jiuquan Satellite Launch Center, People's Republic of China
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Latest news about this satellite
China returns research samples from space station to Earth for study
Tokyo, Japan (SPX) Nov 18, 2025 China's space station has delivered 46.67 kilograms of scientific samples from 26 experiments for analysis on Earth, according to the Technology and Engineering Center for Space Utilization (CSU) under the Chinese Acad...
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China’s three-man Shenzhou-20 space station crew landed safely this morning (EST) in the Shenzhou-21 capsule. Their Shenzhou-21 colleagues remain aboard Tiangong-3 with the Shenzhou-20 capsule that apparently was damaged by […]
Shenzhou-20 astronauts safely return to Earth on Shenzhou-21 spacecraft after space debris damage concerns
Three Chinese astronauts have safely returned to Earth in the recently-launched Shenzhou-21 spacecraft after their own spacecraft was declared unsafe. The post Shenzhou-20 astronauts safely return to Earth on Shenzhou-21 spacecraft after space debris dam...
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