Key statistics
Satellite SL-8 R/B at a glance.
Uptime
13673
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: 1987-098B
Object number (NORAD): 18586
Object ID (CCSDS): 18586
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 100.131 minutes
Inclination: 74.0082 deg
SMA: 7142.861 km
Apoapsis: 778.883 km
Periapsis: 750.568 km
RAAN: 25.9682 deg
Eccentricy: 0.001982
Argument of periapsis: 123.5245 deg
Mean anomaly: 236.7806 deg
Mean motion: 14.38117954 rev/day
Mean motion (dot): 0.00000295 rev/day2
B* drag term: 0.00010582 1/REarth
Two-line elements (TLE)
Creation date: May 8, 2025, 3:01 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 7, 2025, 11:13 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 18586U 87098B 25127.96742008 .00000295 00000-0 10582-3 0 9998
TLE line 2: 2 18586 74.0082 25.9682 0019820 123.5245 236.7806 14.38117954961017
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 43’, on board a Kosmos-3M space rocket.
The launch took place on Dec. 1, 1987, 2:15 p.m. from 133/3 (133L).
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 43
Agency: N/A
Status: Launch Successful
Launch date: Dec. 1, 1987, 2:15 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 133/3 (133L)
Location: Plesetsk Cosmodrome, Russian Federation
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