Key statistics
Satellite SL-8 R/B at a glance.
Uptime
12954
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
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: 1990-004B
Object number (NORAD): 20433
Object ID (CCSDS): 20433
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.187 minutes
Inclination: 74.0368 deg
SMA: 7145.518 km
Apoapsis: 795.598 km
Periapsis: 739.167 km
RAAN: 354.8824 deg
Eccentricy: 0.0039487
Argument of periapsis: 127.635 deg
Mean anomaly: 338.5291 deg
Mean motion: 14.37315866 rev/day
Mean motion (dot): 0.00000234 rev/day2
B* drag term: 0.000086226 1/REarth
Two-line elements (TLE)
Creation date: July 5, 2025, 10:26 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 5, 2025, 8:36 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 20433U 90004B 25186.85859091 .00000234 00000-0 86226-4 0 9999
TLE line 2: 2 20433 74.0368 354.8824 0039487 127.6350 338.5291 14.37315866857400
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
Military communications satellite
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 47’, on board a Kosmos-3M space rocket.
The launch took place on Jan. 18, 1990, 12:52 p.m. from 133/3 (133L).
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 47
Agency: N/A
Status: Launch Successful
Launch date: Jan. 18, 1990, 12:52 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 133/3 (133L)
Location: Plesetsk Cosmodrome, Russian Federation
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