Key statistics
Satellite SL-8 R/B at a glance.
Uptime
17467
Days in orbit
Revolutions
≈ 14.4
Per day
Orbit
LEO
Low Earth Orbit
Inclination
74.0
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: 1978-019B
Object number (NORAD): 10677
Object ID (CCSDS): 10677
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 99.886 minutes
Inclination: 74.0383 deg
SMA: 7131.232 km
Apoapsis: 763.714 km
Periapsis: 742.48 km
RAAN: 329.9616 deg
Eccentricy: 0.00148875
Argument of periapsis: 355.7485 deg
Mean anomaly: 4.3542 deg
Mean motion: 14.41637014 rev/day
Mean motion (dot): 0.00000486 rev/day2
B* drag term: 0.00015731857 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 10:14 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 12, 2025, 6:20 a.m. UTC
TLE line 0: 0 SL-8 R/B
TLE line 1: 1 10677U 78019B 25346.26417170 .00000486 00000-0 15732-3 0 9993
TLE line 2: 2 10677 74.0383 329.9616 0014888 355.7485 4.3542 14.41637014508552
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
Military communications satellite
SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 17’, on board a Kosmos-3M space rocket.
The launch took place on Feb. 17, 1978, 4:33 p.m. from 132/2.
For more information about the launch, click the button.
Kosmos-3M | Strela-2M 17
Agency: N/A
Status: Launch Successful
Launch date: Feb. 17, 1978, 4:33 p.m. UTC
Rocket: Kosmos-3M
Launch pad: 132/2
Location: Plesetsk Cosmodrome, Russian Federation
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