Key statistics
Satellite SL-8 R/B at a glance.
Uptime
20148
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for SL-8 R/B.
Object identification
Identified? True
Debris? False
Object name: SL-8 R/B
International designator: 1970-086B
Object number (NORAD): 4589
Object ID (CCSDS): 4589
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 99.776 minutes
Inclination: 74.0602 deg
SMA: 7125.976 km
Apoapsis: 761.566 km
Periapsis: 734.116 km
RAAN: 340.4927 deg
Eccentricy: 0.00192605
Argument of periapsis: 136.1329 deg
Mean anomaly: 224.1361 deg
Mean motion: 14.43232197 rev/day
Mean motion (dot): 0.00000542 rev/day2
B* drag term: 0.0001684661 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, 6:06 a.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 04589U 70086B 25346.25457441 .00000542 00000-0 16847-3 0 9999
TLE line 2: 2 04589 74.0602 340.4927 0019261 136.1329 224.1361 14.43232197893555
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object SL-8 R/B.
Associated space launch
Military communications satellite
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 2’, on board a Kosmos-3M space rocket.
The launch took place on Oct. 16, 1970, 2:59 p.m. from 132/1 (132L).
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 2
Agency: N/A
Status: Launch Successful
Launch date: Oct. 16, 1970, 2:59 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/1 (132L)
Location: Plesetsk Cosmodrome, Russian Federation
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