Key statistics
Satellite COSMOS 858 at a glance.
Uptime
17920
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for COSMOS 858.
Object identification
Identified? True
Debris? False
Object name: COSMOS 858
International designator: 1976-098A
Object number (NORAD): 9443
Object ID (CCSDS): 9443
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.346 minutes
Inclination: 74.0488 deg
SMA: 7153.108 km
Apoapsis: 784.148 km
Periapsis: 765.799 km
RAAN: 234.7085 deg
Eccentricy: 0.0012826
Argument of periapsis: 49.4579 deg
Mean anomaly: 310.7688 deg
Mean motion: 14.35028669 rev/day
Mean motion (dot): 0.00000318 rev/day2
B* drag term: 0.00012054 1/REarth
Two-line elements (TLE)
Creation date: Oct. 21, 2025, 11:56 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 21, 2025, 8:18 p.m. UTC
TLE line 0: 0 COSMOS 858
TLE line 1: 1 9443U 76098A 25294.84594149 .00000318 00000-0 12054-3 0 9993
TLE line 2: 2 9443 74.0488 234.7085 0012826 49.4579 310.7688 14.35028669564562
Live tracking on map
Real-time ground track for satellite COSMOS 858.
In-orbit conjunctions
A list of the most updated potential collisions computed for object COSMOS 858.
Associated space launch
Military communications satellite
COSMOS 858 was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 14’, on board a Kosmos-3M space rocket.
The launch took place on Sept. 29, 1976, 7:04 a.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 14
Agency: N/A
Status: Launch Successful
Launch date: Sept. 29, 1976, 7:04 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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