Key statistics
Satellite COSMOS 1900 at a glance.
Uptime
13828
Days in orbit
Revolutions
≈ 14.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
66.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 1900.
Object identification
Identified? True
Debris? False
Object name: COSMOS 1900
International designator: 1987-101A
Object number (NORAD): 18665
Object ID (CCSDS): 18665
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 98.933 minutes
Inclination: 66.0848 deg
SMA: 7085.764 km
Apoapsis: 739.376 km
Periapsis: 675.883 km
RAAN: 335.2967 deg
Eccentricy: 0.00448033
Argument of periapsis: 250.2729 deg
Mean anomaly: 109.3542 deg
Mean motion: 14.55535193 rev/day
Mean motion (dot): 0.00000272 rev/day2
B* drag term: 0.000085333068 1/REarth
Two-line elements (TLE)
Creation date: Oct. 21, 2025, 3:26 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 20, 2025, 7:46 p.m. UTC
TLE line 0: 0 COSMOS 1900
TLE line 1: 1 18665U 87101A 25293.82378745 .00000272 00000-0 85333-4 0 9995
TLE line 2: 2 18665 66.0848 335.2967 0044803 250.2729 109.3542 14.55535193 13640
Live tracking on map
Real-time ground track for satellite COSMOS 1900.
Associated space launch
Active radar satellite for ocean surveillance powered by a nuclear reactor.
COSMOS 1900 was lifted into orbit during the mission ‘Tsiklon-2 | US-A 31’, on board a Tsiklon-2 space rocket.
The launch took place on Dec. 12, 1987, 5:40 a.m. from 90.
For more information about the launch, click the button.
Tsiklon-2 | US-A 31
Agency: N/A
Status: Launch Successful
Launch date: Dec. 12, 1987, 5:40 a.m. UTC
Rocket: Tsiklon-2
Launch pad: 90
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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