Key statistics
Satellite SL-8 R/B at a glance.
Uptime
13060
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: 100.182 minutes
Inclination: 74.0349 deg
SMA: 7145.287 km
Apoapsis: 796.565 km
Periapsis: 737.74 km
RAAN: 157.9729 deg
Eccentricy: 0.00411634
Argument of periapsis: 263.794 deg
Mean anomaly: 107.431 deg
Mean motion: 14.3738534 rev/day
Mean motion (dot): 0.00000429 rev/day2
B* drag term: 0.00015097972 1/REarth
Two-line elements (TLE)
Creation date: Oct. 21, 2025, 3:26 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Oct. 20, 2025, 9:16 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 20433U 90004B 25293.88622348 .00000429 00000-0 15098-3 0 9998
TLE line 2: 2 20433 74.0349 157.9729 0041163 263.7940 107.4310 14.37385340872503
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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