Key statistics
Satellite COSMOS 921 at a glance.
Uptime
17658
Days in orbit
Revolutions
≈ 15.0
Per day
Orbit
LEO
Low Earth Orbit
Inclination
75.8
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 921.
Object identification
Identified? True
Debris? False
Object name: COSMOS 921
International designator: 1977-055A
Object number (NORAD): 10095
Object ID (CCSDS): 10095
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 96.242 minutes
Inclination: 75.8311 deg
SMA: 6956.719 km
Apoapsis: 603.988 km
Periapsis: 553.18 km
RAAN: 245.599 deg
Eccentricy: 0.00365171
Argument of periapsis: 223.6009 deg
Mean anomaly: 136.23 deg
Mean motion: 14.96222005 rev/day
Mean motion (dot): 0.00001688 rev/day2
B* drag term: 0.00014960385 1/REarth
Two-line elements (TLE)
Creation date: Oct. 28, 2025, 2:18 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 27, 2025, 11:15 p.m. UTC
TLE line 0: 0 COSMOS 921
TLE line 1: 1 10095U 77055A 25300.96936535 .00001688 00000-0 14960-3 0 9991
TLE line 2: 2 10095 75.8311 245.5990 0036517 223.6009 136.2300 14.96222005619664
Live tracking on map
Real-time ground track for satellite COSMOS 921.
In-orbit conjunctions
A list of the most updated potential collisions computed for object COSMOS 921.
Associated space launch
Dynamic simulator of the Tselina-D ELINT satellite
COSMOS 921 was lifted into orbit during the mission ‘Tsiklon-3 | EPN 03.0380 1’, on board a Tsiklon-3 space rocket.
The launch took place on June 24, 1977, 10:30 a.m. from 32/2.
For more information about the launch, click the button.
Tsiklon-3 | EPN 03.0380 1
Agency: N/A
Status: Launch Successful
Launch date: June 24, 1977, 10:30 a.m. UTC
Rocket: Tsiklon-3
Launch pad: 32/2
Location: Plesetsk Cosmodrome, Russian Federation
...
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