Key statistics
Satellite COSMOS 977 at a glance.
Uptime
17346
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: 74.0312 deg
SMA: 7809.419 km
Apoapsis: 1463.572 km
Periapsis: 1398.996 km
RAAN: 84.2317 deg
Eccentricy: 0.0041345
Argument of periapsis: 267.6692 deg
Mean anomaly: 158.2045 deg
Mean motion: 12.57982818 rev/day
Mean motion (dot): -0.00000024 rev/day2
B* drag term: -0.000042827 1/REarth
Two-line elements (TLE)
Creation date: July 8, 2025, 2:27 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 7, 2025, 8:11 p.m. UTC
TLE line 0: 0 COSMOS 977
TLE line 1: 1 10584U 78005B 25188.84114060 -.00000024 00000-0 -42827-4 0 9991
TLE line 2: 2 10584 74.0312 84.2317 0041345 267.6692 158.2045 12.57982818168154
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
...
Latest news about this satellite
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