Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17421
Days in orbit
Revolutions
≈ 13.8
Per day
Orbit
LEO
Low Earth Orbit
Inclination
83.0
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: 1977-107B
Object number (NORAD): 10461
Object ID (CCSDS): 10461
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.568 minutes
Inclination: 82.95 deg
SMA: 7352.343 km
Apoapsis: 998.552 km
Periapsis: 949.863 km
RAAN: 347.7462 deg
Eccentricy: 0.0033111
Argument of periapsis: 186.7687 deg
Mean anomaly: 284.9105 deg
Mean motion: 13.77095794 rev/day
Mean motion (dot): 0.00000096 rev/day2
B* drag term: 0.000081465 1/REarth
Two-line elements (TLE)
Creation date: July 9, 2025, 2:22 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 9:33 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 10461U 77107B 25189.89803009 .00000096 00000-0 81465-4 0 9999
TLE line 2: 2 10461 82.9500 347.7462 0033111 186.7687 284.9105 13.77095794395584
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
Associated space launch
Molniya communication satellites operating from a highly elliptical orbit
SL-8 R/B was lifted into orbit during the mission ‘Molniya-M | Molniya-3 18L’, on board a Molniya-M space rocket.
The launch took place on Oct. 28, 1977, 1:37 a.m. from 43/3 (43L).
For more information about the launch, click the button.
Molniya-M | Molniya-3 18L
Agency: N/A
Status: Launch Successful
Launch date: Oct. 28, 1977, 1:37 a.m. UTC
Rocket: Molniya-M
Launch pad: 43/3 (43L)
Location: Plesetsk Cosmodrome, Russian Federation
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