Key statistics
Satellite COSMOS 1900 at a glance.
Uptime
13780
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: 98.935 minutes
Inclination: 66.0832 deg
SMA: 7085.879 km
Apoapsis: 739.969 km
Periapsis: 675.518 km
RAAN: 109.0992 deg
Eccentricy: 0.00454783
Argument of periapsis: 273.521 deg
Mean anomaly: 86.0695 deg
Mean motion: 14.55499911 rev/day
Mean motion (dot): 0.00000273 rev/day2
B* drag term: 0.00008559695 1/REarth
Two-line elements (TLE)
Creation date: Sept. 3, 2025, 2:21 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 2, 2025, 10:21 p.m. UTC
TLE line 0: 0 COSMOS 1900
TLE line 1: 1 18665U 87101A 25245.93131561 .00000273 00000-0 85597-4 0 9990
TLE line 2: 2 18665 66.0832 109.0992 0045478 273.5210 86.0695 14.55499911 6672
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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