Key statistics
Satellite COSMOS 977 at a glance.
Uptime
17505
Days in orbit
Revolutions
≈ 12.6
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 977.
Object identification
Identified? True
Debris? False
Object name: COSMOS 977
International designator: 1978-005B
Object number (NORAD): 10584
Object ID (CCSDS): 10584
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 114.469 minutes
Inclination: 74.0305 deg
SMA: 7809.402 km
Apoapsis: 1462.913 km
Periapsis: 1399.622 km
RAAN: 232.0625 deg
Eccentricy: 0.0040522
Argument of periapsis: 26.8587 deg
Mean anomaly: 126.3137 deg
Mean motion: 12.57986742 rev/day
Mean motion (dot): -0.00000016 rev/day2
B* drag term: -0.000001880855 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, 3:34 a.m. UTC
TLE line 0: 0 COSMOS 977
TLE line 1: 1 10584U 78005B 25346.14905365 -.00000016 00000-0 -18809-5 0 9991
TLE line 2: 2 10584 74.0305 232.0625 0040522 26.8587 126.3137 12.57986742187930
Live tracking on map
Real-time ground track for satellite COSMOS 977.
In-orbit conjunctions
There are no conjunctions computed for COSMOS 977, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
Tselina-D satellites provided detailed observation of radio sources detected by the smaller Tselina-O satellites as part of the Tselina ELINT system.
COSMOS 977 was lifted into orbit during the mission ‘Vostok 8A92M | Tselina-D 14’, on board a Vostok 8A92M space rocket.
The launch took place on Jan. 10, 1978, 1:23 p.m. from 43/4 (43R).
For more information about the launch, click the button.
Vostok 8A92M | Tselina-D 14
Agency: N/A
Status: Launch Successful
Launch date: Jan. 10, 1978, 1:23 p.m. UTC
Rocket: Vostok 8A92M
Launch pad: 43/4 (43R)
Location: Plesetsk Cosmodrome, Russian Federation
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Latest news about this satellite
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