Key statistics
Satellite CZ-4 R/B at a glance.
Uptime
12665
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: 103.375 minutes
Inclination: 98.9759 deg
SMA: 7296.335 km
Apoapsis: 957.477 km
Periapsis: 878.922 km
RAAN: 96.6871 deg
Eccentricy: 0.0053832
Argument of periapsis: 97.1501 deg
Mean anomaly: 327.206 deg
Mean motion: 13.92982455 rev/day
Mean motion (dot): 0.00000145 rev/day2
B* drag term: 0.00014274 1/REarth
Two-line elements (TLE)
Creation date: May 7, 2025, 3:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 6, 2025, 8:47 p.m. UTC
TLE line 0: 0 CZ-4 R/B
TLE line 1: 1 20791U 90081D 25126.86637624 .00000145 00000-0 14274-3 0 9996
TLE line 2: 2 20791 98.9759 96.6871 0053832 97.1501 327.2060 13.92982455762024
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
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