Key statistics
Satellite SL-12 R/B(2) at a glance.
Uptime
13189
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: 65.1101 deg
SMA: 25477.477 km
Apoapsis: 19119.257 km
Periapsis: 19079.426 km
RAAN: 321.0152 deg
Eccentricy: 0.0007817
Argument of periapsis: 284.8172 deg
Mean anomaly: 77.7231 deg
Mean motion: 2.13485383 rev/day
Mean motion (dot): -0.00000066 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: July 9, 2025, 2:22 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 5:46 p.m. UTC
TLE line 0: 0 SL-12 R/B(2)
TLE line 1: 1 20028U 89039E 25189.74095455 -.00000066 00000-0 00000-0 0 9998
TLE line 2: 2 20028 65.1101 321.0152 0007817 284.8172 77.7231 2.13485383267006
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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