Key statistics
Satellite SL-8 DEB at a glance.
Uptime
12689
Days in orbit
Revolutions
≈ 14.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
Latest
Satellite identification and parameters
Extended collection of information and parameters for SL-8 DEB.
Object identification
Identified? True
Debris? True
Object name: SL-8 DEB
International designator: 1990-111C
Object number (NORAD): 21255
Object ID (CCSDS): 21255
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: SMALL
Orbital parameters
Period: 99.238 minutes
Inclination: 74.0351 deg
SMA: 7100.315 km
Apoapsis: 730.032 km
Periapsis: 714.327 km
RAAN: 212.2064 deg
Eccentricy: 0.00110597
Argument of periapsis: 66.6107 deg
Mean anomaly: 355.2946 deg
Mean motion: 14.51063339 rev/day
Mean motion (dot): 0.00002678 rev/day2
B* drag term: 0.0006823834 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, 10:31 p.m. UTC
TLE line 0: 0 SL-8 DEB
TLE line 1: 1 21255U 90111C 25248.93873911 .00002678 00000-0 68238-3 0 9992
TLE line 2: 2 21255 74.0351 212.2064 0011060 66.6107 355.2946 14.51063339824359
Live tracking on map
Real-time ground track for satellite SL-8 DEB.
Associated space launch
Military communications satellite
SL-8 DEB was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 48’, on board a Kosmos-3M space rocket.
The launch took place on Dec. 10, 1990, 7:54 a.m. from 133/3 (133L).
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 48
Agency: N/A
Status: Launch Successful
Launch date: Dec. 10, 1990, 7:54 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 133/3 (133L)
Location: Plesetsk Cosmodrome, Russian Federation
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