Key statistics
Satellite SL-12 R/B(2) at a glance.
Uptime
13244
Days in orbit
Revolutions
≈ 2.1
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
65.1
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: 1989-039E
Object number (NORAD): 20028
Object ID (CCSDS): 20028
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 674.519 minutes
Inclination: 65.0762 deg
SMA: 25477.482 km
Apoapsis: 19120.36 km
Periapsis: 19078.334 km
RAAN: 319.1314 deg
Eccentricy: 0.00082476
Argument of periapsis: 281.7949 deg
Mean anomaly: 47.1347 deg
Mean motion: 2.13485318 rev/day
Mean motion (dot): -0.0000005 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Sept. 1, 2025, 7:24 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Sept. 1, 2025, 12:03 p.m. UTC
TLE line 0: 0 SL-12 R/B(2)
TLE line 1: 1 20028U 89039E 25244.50227740 -.00000050 00000-0 00000-0 0 9991
TLE line 2: 2 20028 65.0762 319.1314 0008248 281.7949 47.1347 2.13485318268168
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
GLONASS navigation satellites
SL-12 R/B(2) was lifted into orbit during the mission ‘Proton | Uragan 34 & 35’, on board a Proton space rocket.
The launch took place on May 31, 1989, 8:31 a.m. from 200/40.
For more information about the launch, click the button.
Proton | Uragan 34 & 35
Agency: N/A
Status: Launch Successful
Launch date: May 31, 1989, 8:31 a.m. UTC
Rocket: Proton
Launch pad: 200/40
Location: Baikonur Cosmodrome, Republic of Kazakhstan
...
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