Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17786
Days in orbit
Revolutions
≈ 13.8
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: 1976-128B
Object number (NORAD): 9638
Object ID (CCSDS): 9638
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.46 minutes
Inclination: 82.9406 deg
SMA: 7347.282 km
Apoapsis: 992.609 km
Periapsis: 945.685 km
RAAN: 323.3078 deg
Eccentricy: 0.00319327
Argument of periapsis: 152.0716 deg
Mean anomaly: 208.2164 deg
Mean motion: 13.78518897 rev/day
Mean motion (dot): 0.00000107 rev/day2
B* drag term: 0.000089980524 1/REarth
Two-line elements (TLE)
Creation date: Sept. 8, 2025, 3:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 7, 2025, 10:35 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 09638U 76128B 25250.94127868 .00000107 00000-0 89981-4 0 9996
TLE line 2: 2 09638 82.9406 323.3078 0031933 152.0716 208.2164 13.78518897448257
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 17L’, on board a Molniya-M space rocket.
The launch took place on Dec. 28, 1976, 6:38 a.m. from 43/4 (43R).
For more information about the launch, click the button.
Molniya-M | Molniya-3 17L
Agency: N/A
Status: Launch Successful
Launch date: Dec. 28, 1976, 6:38 a.m. UTC
Rocket: Molniya-M
Launch pad: 43/4 (43R)
Location: Plesetsk Cosmodrome, Russian Federation
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