Key statistics
Satellite COSMOS 858 at a glance.
Uptime
17972
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: 100.344 minutes
Inclination: 74.0478 deg
SMA: 7153.008 km
Apoapsis: 785.431 km
Periapsis: 764.315 km
RAAN: 140.7458 deg
Eccentricy: 0.00147606
Argument of periapsis: 303.729 deg
Mean anomaly: 56.2455 deg
Mean motion: 14.35058798 rev/day
Mean motion (dot): 0.00000301 rev/day2
B* drag term: 0.00011454107 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, 3:41 a.m. UTC
TLE line 0: 0 COSMOS 858
TLE line 1: 1 09443U 76098A 25346.15415671 .00000301 00000-0 11454-3 0 9992
TLE line 2: 2 09443 74.0478 140.7458 0014761 303.7290 56.2455 14.35058798571925
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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