Key statistics
Satellite COSMOS 1861 at a glance.
Uptime
14054
Days in orbit
Revolutions
≈ 13.7
Per day
Orbit
LEO
Low Earth Orbit
Inclination
82.9
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 1861.
Object identification
Identified? True
Debris? False
Object name: COSMOS 1861
International designator: 1987-054A
Object number (NORAD): 18129
Object ID (CCSDS): 18129
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.861 minutes
Inclination: 82.9257 deg
SMA: 7366.067 km
Apoapsis: 997.427 km
Periapsis: 978.436 km
RAAN: 100.278 deg
Eccentricy: 0.00128911
Argument of periapsis: 108.5984 deg
Mean anomaly: 262.2451 deg
Mean motion: 13.73249013 rev/day
Mean motion (dot): 0.0000009 rev/day2
B* drag term: 0.000080726673 1/REarth
Two-line elements (TLE)
Creation date: Dec. 14, 2025, 3:07 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 13, 2025, 1:23 p.m. UTC
TLE line 0: 0 COSMOS 1861
TLE line 1: 1 18129U 87054A 25347.55801907 .00000090 00000-0 80727-4 0 9998
TLE line 2: 2 18129 82.9257 100.2780 0012891 108.5984 262.2451 13.73249013928060
Live tracking on map
Real-time ground track for satellite COSMOS 1861.
Associated space launch
Civilian navigation satellite equivalent to the purely military Parus
COSMOS 1861 was lifted into orbit during the mission ‘Kosmos-3M | Tsikada 16’, on board a Kosmos-3M space rocket.
The launch took place on June 23, 1987, 7:37 a.m. from 132/1 (132L).
For more information about the launch, click the button.
Kosmos-3M | Tsikada 16
Agency: N/A
Status: Launch Successful
Launch date: June 23, 1987, 7:37 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/1 (132L)
Location: Plesetsk Cosmodrome, Russian Federation
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