Key statistics
Satellite SL-8 R/B at a glance.
Uptime
12578
Days in orbit
Revolutions
≈ 13.8
Per day
Orbit
LEO
Low Earth Orbit
Inclination
82.9
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: 1991-006B
Object number (NORAD): 21088
Object ID (CCSDS): 21088
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.54 minutes
Inclination: 82.9431 deg
SMA: 7351.038 km
Apoapsis: 989.491 km
Periapsis: 956.314 km
RAAN: 352.8862 deg
Eccentricy: 0.0022566
Argument of periapsis: 7.3149 deg
Mean anomaly: 103.8296 deg
Mean motion: 13.7746251 rev/day
Mean motion (dot): 0.00000121 rev/day2
B* drag term: 0.00010605 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 10:26 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 9:39 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 21088U 91006B 25187.90231355 .00000121 00000-0 10605-3 0 9995
TLE line 2: 2 21088 82.9431 352.8862 0022566 7.3149 103.8296 13.77462510730507
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
Informator 1 was a prototype communications satellite for the Koskon (Space Conversion) Global Space Communication System to collect and transmit data from several scientific stations with an additional radio amateur hosted payload. It was launched on 29 January 1991 from the Plesetsk Cosmodrome by a Kosmos-3M launch vehicle.
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Informator-1’, on board a Kosmos-3M space rocket.
The launch took place on Jan. 29, 1991, 11:59 a.m. from 133/3 (133L).
For more information about the launch, click the button.
Kosmos-3M | Informator-1
Agency: N/A
Status: Launch Successful
Launch date: Jan. 29, 1991, 11:59 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 133/3 (133L)
Location: Plesetsk Cosmodrome, Russian Federation
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
