Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17059
Days in orbit
Revolutions
≈ 13.2
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: 1978-122B
Object number (NORAD): 11170
Object ID (CCSDS): 11170
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 108.913 minutes
Inclination: 82.9765 deg
SMA: 7554.636 km
Apoapsis: 1196.022 km
Periapsis: 1156.98 km
RAAN: 7.9153 deg
Eccentricy: 0.00258391
Argument of periapsis: 28.0443 deg
Mean anomaly: 86.7134 deg
Mean motion: 13.22155223 rev/day
Mean motion (dot): 0.00000016 rev/day2
B* drag term: 0.000005657087 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, 8:49 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 11170U 78122B 25250.86769124 .00000016 00000-0 56571-5 0 9993
TLE line 2: 2 11170 82.9765 7.9153 0025839 28.0443 86.7134 13.22155223235568
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
Associated space launch
High-resolution film-return Zenit reconnaissance satellite
SL-8 R/B was lifted into orbit during the mission ‘Soyuz U | Zenit-4MKM 25’, on board a Soyuz U space rocket.
The launch took place on Dec. 26, 1978, 3:30 p.m. from 43/4 (43R).
For more information about the launch, click the button.
Soyuz U | Zenit-4MKM 25
Agency: N/A
Status: Launch Successful
Launch date: Dec. 26, 1978, 3:30 p.m. UTC
Rocket: Soyuz U
Launch pad: 43/4 (43R)
Location: Plesetsk Cosmodrome, Russian Federation
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