Key statistics
Satellite COSMOS 1821 at a glance.
Uptime
14081
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 1821.
Object identification
Identified? True
Debris? False
Object name: COSMOS 1821
International designator: 1987-017A
Object number (NORAD): 17525
Object ID (CCSDS): 17525
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.81 minutes
Inclination: 82.9153 deg
SMA: 7363.678 km
Apoapsis: 1012.926 km
Periapsis: 958.16 km
RAAN: 19.0385 deg
Eccentricy: 0.00371862
Argument of periapsis: 20.7819 deg
Mean anomaly: 94.0183 deg
Mean motion: 13.73917281 rev/day
Mean motion (dot): 0.00000061 rev/day2
B* drag term: 0.000049121277 1/REarth
Two-line elements (TLE)
Creation date: Sept. 6, 2025, 2:09 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 5, 2025, 9:40 p.m. UTC
TLE line 0: 0 COSMOS 1821
TLE line 1: 1 17525U 87017A 25248.90340056 .00000061 00000-0 49121-4 0 9999
TLE line 2: 2 17525 82.9153 19.0385 0037186 20.7819 94.0183 13.73917281916180
Live tracking on map
Real-time ground track for satellite COSMOS 1821.
Associated space launch
Navigation satellite providing location information for the Tsiklon-B navigation system
COSMOS 1821 was lifted into orbit during the mission ‘Kosmos-3M | Parus 58’, on board a Kosmos-3M space rocket.
The launch took place on Feb. 18, 1987, 1:53 p.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Parus 58
Agency: N/A
Status: Launch Successful
Launch date: Feb. 18, 1987, 1:53 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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