Key statistics
Satellite CZ-4 R/B at a glance.
Uptime
12789
Days in orbit
Revolutions
≈ 13.9
Per day
Orbit
SSO
Sun Synchronous Orbit
Inclination
99.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for CZ-4 R/B.
Object identification
Identified? True
Debris? False
Object name: CZ-4 R/B
International designator: 1990-081D
Object number (NORAD): 20791
Object ID (CCSDS): 20791
Country: PEOPLES REPUBLIC OF CHINA (PRC)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 103.374 minutes
Inclination: 98.9882 deg
SMA: 7296.274 km
Apoapsis: 957.275 km
Periapsis: 879.003 km
RAAN: 216.9994 deg
Eccentricy: 0.00536384
Argument of periapsis: 118.0245 deg
Mean anomaly: 299.2183 deg
Mean motion: 13.92999713 rev/day
Mean motion (dot): 0.0000013 rev/day2
B* drag term: 0.00013111964 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 3:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 7, 2025, 8:07 p.m. UTC
TLE line 0: 0 CZ-4 R/B
TLE line 1: 1 20791U 90081D 25250.83850694 .00000130 00000-0 13112-3 0 9999
TLE line 2: 2 20791 98.9882 216.9994 0053638 118.0245 299.2183 13.92999713779281
Live tracking on map
Real-time ground track for satellite CZ-4 R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object CZ-4 R/B.
Associated space launch
Chinese polar orbiting meteorological satellite
CZ-4 R/B was lifted into orbit during the mission ‘Long March 4A | Feng Yun 1B’, on board a Long March 4A space rocket.
The launch took place on Sept. 3, 1990, 12:53 a.m. from Launch Complex 7.
For more information about the launch, click the button.
Long March 4A | Feng Yun 1B
Agency: N/A
Status: Launch Successful
Launch date: Sept. 3, 1990, 12:53 a.m. UTC
Rocket: Long March 4A
Launch pad: Launch Complex 7
Location: Taiyuan 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.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
