Key statistics
Satellite SL-8 R/B at a glance.
Uptime
16165
Days in orbit
Revolutions
≈ 13.8
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: 1981-053B
Object number (NORAD): 12508
Object ID (CCSDS): 12508
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.605 minutes
Inclination: 82.9541 deg
SMA: 7354.083 km
Apoapsis: 1004.439 km
Periapsis: 947.457 km
RAAN: 78.4663 deg
Eccentricy: 0.00387417
Argument of periapsis: 87.3921 deg
Mean anomaly: 273.167 deg
Mean motion: 13.7660696 rev/day
Mean motion (dot): 0.00000099 rev/day2
B* drag term: 0.000084896987 1/REarth
Two-line elements (TLE)
Creation date: Sept. 6, 2025, 2:09 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 5, 2025, 10:24 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 12508U 81053B 25248.93372412 .00000099 00000-0 84897-4 0 9993
TLE line 2: 2 12508 82.9541 78.4663 0038742 87.3921 273.1670 13.76606960228300
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
Navigation satellite providing location information for the Tsiklon-B navigation system
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Parus 27’, on board a Kosmos-3M space rocket.
The launch took place on June 4, 1981, 3:41 p.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Parus 27
Agency: N/A
Status: Launch Successful
Launch date: June 4, 1981, 3:41 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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