Key statistics
Satellite SL-12 R/B(2) at a glance.
Uptime
14649
Days in orbit
Revolutions
≈ 14.2
Per day
Orbit
LEO
Low Earth Orbit
Inclination
71.1
Latest
Satellite identification and parameters
Extended collection of information and parameters for SL-12 R/B(2).
Object identification
Identified? True
Debris? False
Object name: SL-12 R/B(2)
International designator: 1985-042D
Object number (NORAD): 15772
Object ID (CCSDS): 15772
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 101.273 minutes
Inclination: 71.1071 deg
SMA: 7197.096 km
Apoapsis: 843.516 km
Periapsis: 794.405 km
RAAN: 247.5427 deg
Eccentricy: 0.0034119
Argument of periapsis: 151.7552 deg
Mean anomaly: 321.0124 deg
Mean motion: 14.21892813 rev/day
Mean motion (dot): -0.00000001 rev/day2
B* drag term: 0.000021161 1/REarth
Two-line elements (TLE)
Creation date: July 6, 2025, 6:05 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 6, 2025, 3:02 p.m. UTC
TLE line 0: 0 SL-12 R/B(2)
TLE line 1: 1 15772U 85042D 25187.62673567 -.00000001 00000-0 21161-4 0 9993
TLE line 2: 2 15772 71.1071 247.5427 0034119 151.7552 321.0124 14.21892813 79419
Live tracking on map
Real-time ground track for satellite SL-12 R/B(2).
In-orbit conjunctions
A list of the most updated potential collisions computed for object SL-12 R/B(2).
Associated space launch
Second generation ELING satellite
SL-12 R/B(2) was lifted into orbit during the mission ‘Proton | Tselina-2 2’, on board a Proton space rocket.
The launch took place on May 30, 1985, 2:59 p.m. from 200/40.
For more information about the launch, click the button.
Proton | Tselina-2 2
Agency: N/A
Status: Launch Successful
Launch date: May 30, 1985, 2:59 p.m. UTC
Rocket: Proton
Launch pad: 200/40
Location: Baikonur Cosmodrome, Republic of Kazakhstan
...
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