Key statistics
Satellite SL-8 R/B at a glance.
Uptime
9765
Days in orbit
Revolutions
≈ 13.7
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: 1998-072C
Object number (NORAD): 25569
Object ID (CCSDS): 25569
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.776 minutes
Inclination: 82.9385 deg
SMA: 7362.09 km
Apoapsis: 1000.337 km
Periapsis: 967.573 km
RAAN: 270.8251 deg
Eccentricy: 0.00222516
Argument of periapsis: 71.472 deg
Mean anomaly: 348.4817 deg
Mean motion: 13.74361726 rev/day
Mean motion (dot): 0.00000205 rev/day2
B* drag term: 0.00020050759 1/REarth
Two-line elements (TLE)
Creation date: Sept. 3, 2025, 10:15 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 3, 2025, 12:45 a.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 25569U 98072C 25246.03154735 .00000205 00000-0 20051-3 0 9998
TLE line 2: 2 25569 82.9385 270.8251 0022252 71.4720 348.4817 13.74361726340285
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
Associated space launch
Civilian navigation satellite equivalent to the purely military Parus
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Nadezhda 8’, on board a Kosmos-3M space rocket.
The launch took place on Dec. 10, 1998, 11:57 a.m. from 132/1 (132L).
For more information about the launch, click the button.
Kosmos-3M | Nadezhda 8
Agency: N/A
Status: Launch Successful
Launch date: Dec. 10, 1998, 11:57 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/1 (132L)
Location: Plesetsk Cosmodrome, Russian Federation
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