Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17262
Days in orbit
Revolutions
≈ 12.2
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
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: 1978-056J
Object number (NORAD): 10938
Object ID (CCSDS): 10938
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 117.885 minutes
Inclination: 74.0179 deg
SMA: 7964.019 km
Apoapsis: 1691.466 km
Periapsis: 1480.302 km
RAAN: 85.1851 deg
Eccentricy: 0.01325735
Argument of periapsis: 166.2991 deg
Mean anomaly: 353.3378 deg
Mean motion: 12.2153057 rev/day
Mean motion (dot): 0.00000052 rev/day2
B* drag term: 0.00061574492 1/REarth
Two-line elements (TLE)
Creation date: Sept. 9, 2025, 10:35 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 9, 2025, 12:51 a.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 10938U 78056J 25252.03563388 .00000052 00000-0 61574-3 0 9992
TLE line 2: 2 10938 74.0179 85.1851 0132573 166.2991 353.3378 12.21530570107303
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
Associated space launch
Military communications satellites
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-1M 145-152’, on board a Kosmos-3M space rocket.
The launch took place on June 7, 1978, 10 p.m. from 132/1 (132L).
For more information about the launch, click the button.
Kosmos-3M | Strela-1M 145-152
Agency: N/A
Status: Launch Successful
Launch date: June 7, 1978, 10 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/1 (132L)
Location: Plesetsk Cosmodrome, Russian Federation
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