Key statistics
Satellite SL-8 R/B at a glance.
Uptime
18633
Days in orbit
Revolutions
≈ 13.7
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: 1974-079B
Object number (NORAD): 7477
Object ID (CCSDS): 7477
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.785 minutes
Inclination: 82.9407 deg
SMA: 7362.495 km
Apoapsis: 1008.196 km
Periapsis: 960.525 km
RAAN: 307.7245 deg
Eccentricy: 0.00323744
Argument of periapsis: 246.7548 deg
Mean anomaly: 136.7201 deg
Mean motion: 13.74248371 rev/day
Mean motion (dot): -0.00000005 rev/day2
B* drag term: -0.000020497021 1/REarth
Two-line elements (TLE)
Creation date: Oct. 23, 2025, 2:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 22, 2025, 11:22 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 07477U 74079B 25295.97411959 -.00000005 00000-0 -20497-4 0 9993
TLE line 2: 2 07477 82.9407 307.7245 0032374 246.7548 136.7201 13.74248371557164
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
High resolution optical reconnaissance satellite of the Vostok-based Zenit family.
SL-8 R/B was lifted into orbit during the mission ‘Voskhod | Zenit-4MK 31’, on board a Voskhod space rocket.
The launch took place on Oct. 18, 1974, 3 p.m. from 41/1.
For more information about the launch, click the button.
Voskhod | Zenit-4MK 31
Agency: N/A
Status: Launch Successful
Launch date: Oct. 18, 1974, 3 p.m. UTC
Rocket: Voskhod
Launch pad: 41/1
Location: Plesetsk Cosmodrome, Russian Federation
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