Key statistics
Satellite COSMOS 81 at a glance.
Uptime
22021
Days in orbit
Revolutions
≈ 12.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
56.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 81.
Object identification
Identified? True
Debris? False
Object name: COSMOS 81
International designator: 1965-070B
Object number (NORAD): 1571
Object ID (CCSDS): 1571
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: MEDIUM
Orbital parameters
Period: 115.305 minutes
Inclination: 56.0625 deg
SMA: 7847.382 km
Apoapsis: 1537.461 km
Periapsis: 1401.033 km
RAAN: 329.4462 deg
Eccentricy: 0.00869258
Argument of periapsis: 203.6471 deg
Mean anomaly: 193.2935 deg
Mean motion: 12.48865313 rev/day
Mean motion (dot): -0.00000097 rev/day2
B* drag term: -0.000012601003 1/REarth
Two-line elements (TLE)
Creation date: Dec. 18, 2025, 2:19 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 17, 2025, 11:09 p.m. UTC
TLE line 0: 0 COSMOS 81
TLE line 1: 1 01571U 65070B 25351.96514858 -.00000097 00000-0 -12601-4 0 9996
TLE line 2: 2 01571 56.0625 329.4462 0086926 203.6471 193.2935 12.48865313749984
Live tracking on map
Real-time ground track for satellite COSMOS 81.
In-orbit conjunctions
There are no conjunctions computed for COSMOS 81, at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
The Strela-1 satellites were prototype store-dump communications satellites for tactical communication.
COSMOS 81 was lifted into orbit during the mission ‘Kosmos 65S3 | Strela-1 20 to 24’, on board a Kosmos 65S3 space rocket.
The launch took place on Sept. 3, 1965, 2 p.m. from 41/15.
For more information about the launch, click the button.
Kosmos 65S3 | Strela-1 20 to 24
Agency: N/A
Status: Launch Successful
Launch date: Sept. 3, 1965, 2 p.m. UTC
Rocket: Kosmos 65S3
Launch pad: 41/15
Location: Baikonur Cosmodrome, Republic of Kazakhstan
...
Latest news about this satellite
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