Key statistics
Satellite COSMOS 951 at a glance.
Uptime
17623
Days in orbit
Revolutions
≈ 13.7
Per day
Orbit
LEO
Low Earth Orbit
Inclination
83.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 951.
Object identification
Identified? True
Debris? False
Object name: COSMOS 951
International designator: 1977-087A
Object number (NORAD): 10352
Object ID (CCSDS): 10352
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.779 minutes
Inclination: 82.9689 deg
SMA: 7362.218 km
Apoapsis: 1009.176 km
Periapsis: 958.991 km
RAAN: 310.0522 deg
Eccentricy: 0.00340828
Argument of periapsis: 171.8042 deg
Mean anomaly: 301.4115 deg
Mean motion: 13.74325929 rev/day
Mean motion (dot): 0.00000101 rev/day2
B* drag term: 0.000090884935 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 10:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 7:14 a.m. UTC
TLE line 0: 0 COSMOS 951
TLE line 1: 1 10352U 77087A 25346.30148284 .00000101 00000-0 90885-4 0 9996
TLE line 2: 2 10352 82.9689 310.0522 0034083 171.8042 301.4115 13.74325929418811
Live tracking on map
Real-time ground track for satellite COSMOS 951.
Associated space launch
The soviet Zenit-2M (Gektor, 11F690) was an improved version of the Zenit-2 area surveillance reconnaissance satellite. It was part of the Vostok-based Zenit-family.
COSMOS 951 was lifted into orbit during the mission ‘Soyuz U | Zenit-2M 81’, on board a Soyuz U space rocket.
The launch took place on Sept. 13, 1977, 3:10 p.m. from 43/3 (43L).
For more information about the launch, click the button.
Soyuz U | Zenit-2M 81
Agency: N/A
Status: Launch Successful
Launch date: Sept. 13, 1977, 3:10 p.m. UTC
Rocket: Soyuz U
Launch pad: 43/3 (43L)
Location: Plesetsk Cosmodrome, Russian Federation
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