Key statistics
Satellite SL-12 R/B(2) at a glance.
Uptime
12835
Days in orbit
Revolutions
≈ 2.1
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
64.9
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: 1990-045E
Object number (NORAD): 20623
Object ID (CCSDS): 20623
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 674.729 minutes
Inclination: 64.9014 deg
SMA: 25482.75 km
Apoapsis: 19139.577 km
Periapsis: 19069.653 km
RAAN: 318.9863 deg
Eccentricy: 0.001372
Argument of periapsis: 344.3355 deg
Mean anomaly: 193.7286 deg
Mean motion: 2.13419119 rev/day
Mean motion (dot): -0.00000068 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: July 8, 2025, 5:26 p.m.
Reference frame: TEME
Reference center: EARTH
Epoch: July 8, 2025, 5:34 a.m. UTC
TLE line 0: 0 SL-12 R/B(2)
TLE line 1: 1 20623U 90045E 25189.23256473 -.00000068 00000-0 00000-0 0 9993
TLE line 2: 2 20623 64.9014 318.9863 0013720 344.3355 193.7286 2.13419119273994
Live tracking on map
Real-time ground track for satellite 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 36 to 38’, on board a Proton space rocket.
The launch took place on May 19, 1990, 8:32 a.m. from 200/40.
For more information about the launch, click the button.
Proton | Uragan 36 to 38
Agency: N/A
Status: Launch Successful
Launch date: May 19, 1990, 8:32 a.m. UTC
Rocket: Proton
Launch pad: 200/40
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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