Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17516
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: 1977-039B
Object number (NORAD): 10020
Object ID (CCSDS): 10020
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 104.474 minutes
Inclination: 82.9485 deg
SMA: 7347.937 km
Apoapsis: 993.159 km
Periapsis: 946.445 km
RAAN: 17.7314 deg
Eccentricy: 0.0031787
Argument of periapsis: 144.1821 deg
Mean anomaly: 216.1477 deg
Mean motion: 13.78334594 rev/day
Mean motion (dot): 0.00000101 rev/day2
B* drag term: 0.000084548 1/REarth
Two-line elements (TLE)
Creation date: May 9, 2025, 2:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 8, 2025, 4:45 p.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 10020U 77039B 25128.69813314 .00000101 00000-0 84548-4 0 9997
TLE line 2: 2 10020 82.9485 17.7314 0031787 144.1821 216.1477 13.78334594410629
Live tracking on map
Real-time ground track for satellite SL-8 R/B.
Associated space launch
The Sfera or Geoid series were the first soviet geodetic satellites to improve the accuracy of maps. The development of the satellites started in 1965 at NPO-PM.
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Sfera 16’, on board a Kosmos-3M space rocket.
The launch took place on May 25, 1977, 11 a.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Sfera 16
Agency: N/A
Status: Launch Successful
Launch date: May 25, 1977, 11 a.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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