Key statistics
Satellite SL-8 R/B at a glance.
Uptime
12731
Days in orbit
Revolutions
≈ 14.8
Per day
Orbit
LEO
Low Earth Orbit
Inclination
82.9
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: 1990-078B
Object number (NORAD): 20775
Object ID (CCSDS): 20775
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 97.38 minutes
Inclination: 82.9078 deg
SMA: 7011.453 km
Apoapsis: 915.192 km
Periapsis: 351.444 km
RAAN: 112.0233 deg
Eccentricy: 0.0402019
Argument of periapsis: 119.8935 deg
Mean anomaly: 244.2857 deg
Mean motion: 14.78736286 rev/day
Mean motion (dot): 0.00012701 rev/day2
B* drag term: 0.00041482 1/REarth
Two-line elements (TLE)
Creation date: July 5, 2025, 5:45 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 5, 2025, 5:26 a.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 20775U 90078B 25186.22682626 .00012701 00000-0 41482-3 0 9994
TLE line 2: 2 20775 82.9078 112.0233 0402019 119.8935 244.2857 14.78736286772607
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
Early warning satellite
SL-8 R/B was lifted into orbit during the mission ‘Molniya 8K78M-PVB | US-K 66’, on board a Molniya 8K78M-PVB space rocket.
The launch took place on Aug. 28, 1990, 7:49 a.m. from 43/4 (43R).
For more information about the launch, click the button.
Molniya 8K78M-PVB | US-K 66
Agency: N/A
Status: Launch Successful
Launch date: Aug. 28, 1990, 7:49 a.m. UTC
Rocket: Molniya 8K78M-PVB
Launch pad: 43/4 (43R)
Location: Plesetsk Cosmodrome, Russian Federation
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