Key statistics
Satellite SL-3 R/B at a glance.
Uptime
17425
Days in orbit
Revolutions
≈ 14.1
Per day
Orbit
LEO
Low Earth Orbit
Inclination
81.2
Latest
Satellite identification and parameters
Extended collection of information and parameters for SL-3 R/B.
Object identification
Identified? True
Debris? False
Object name: SL-3 R/B
International designator: 1977-117B
Object number (NORAD): 10515
Object ID (CCSDS): 10515
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 102.195 minutes
Inclination: 81.2419 deg
SMA: 7240.709 km
Apoapsis: 886.222 km
Periapsis: 838.926 km
RAAN: 249.4055 deg
Eccentricy: 0.00326596
Argument of periapsis: 73.9367 deg
Mean anomaly: 286.5396 deg
Mean motion: 14.09065233 rev/day
Mean motion (dot): -0.0000007 rev/day2
B* drag term: -0.000047836755 1/REarth
Two-line elements (TLE)
Creation date: Aug. 29, 2025, 2:15 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 28, 2025, 10:46 p.m. UTC
TLE line 0: 0 SL-3 R/B
TLE line 1: 1 10515U 77117B 25240.94875977 -.00000070 00000-0 -47837-4 0 9996
TLE line 2: 2 10515 81.2419 249.4055 0032660 73.9367 286.5396 14.09065233451204
Live tracking on map
Real-time ground track for satellite SL-3 R/B.
In-orbit conjunctions
A list of the most updated potential collisions computed for object SL-3 R/B.
Associated space launch
Second generation soviet meteorological satellite
SL-3 R/B was lifted into orbit during the mission ‘Vostok 8A92M | Meteor-2 3’, on board a Vostok 8A92M space rocket.
The launch took place on Dec. 14, 1977, 9:30 a.m. from 43/4 (43R).
For more information about the launch, click the button.
Vostok 8A92M | Meteor-2 3
Agency: N/A
Status: Launch Successful
Launch date: Dec. 14, 1977, 9:30 a.m. UTC
Rocket: Vostok 8A92M
Launch pad: 43/4 (43R)
Location: Plesetsk Cosmodrome, Russian Federation
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