Key statistics
Satellite SL-12 R/B(2) at a glance.
Uptime
14495
Days in orbit
Revolutions
≈ 2.1
Per day
Orbit
MEO
Medium Earth Orbit
Inclination
66.2
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: 1985-118F
Object number (NORAD): 16404
Object ID (CCSDS): 16404
Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 675.532 minutes
Inclination: 66.1746 deg
SMA: 25502.981 km
Apoapsis: 19141.456 km
Periapsis: 19108.236 km
RAAN: 333.6452 deg
Eccentricy: 0.00065128
Argument of periapsis: 12.2568 deg
Mean anomaly: 326.099 deg
Mean motion: 2.13165216 rev/day
Mean motion (dot): -0.00000082 rev/day2
B* drag term: 0.0 1/REarth
Two-line elements (TLE)
Creation date: Aug. 29, 2025, 2:15 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 28, 2025, 2:44 p.m. UTC
TLE line 0: 0 SL-12 R/B(2)
TLE line 1: 1 16404U 85118F 25240.61433153 -.00000082 00000-0 00000-0 0 9998
TLE line 2: 2 16404 66.1746 333.6452 0006513 12.2568 326.0990 2.13165216309055
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 12 & 13’, on board a Proton space rocket.
The launch took place on Dec. 24, 1985, 9:43 p.m. from 200/39 (200L).
For more information about the launch, click the button.
Proton | Uragan 12 & 13
Agency: N/A
Status: Launch Successful
Launch date: Dec. 24, 1985, 9:43 p.m. UTC
Rocket: Proton
Launch pad: 200/39 (200L)
Location: Baikonur Cosmodrome, Republic of Kazakhstan
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