CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1985-0252
SL-12 R/B(AUX MOTOR)
SL-12 R/B(AUX MOTOR) (NORAD 13903) re-entered Earth’s atmosphere on 5 August 1985, after 2 years, 4 months in orbit.
Official date
NORAD number
13903
International designator
1983-020C
Object type
Rocket body
Country
USSR
Launched
23 Mar 1983Baikonur Cosmodrome
Re-entered (UTC)
5 Aug 1985UTC calendar day
Time in orbit
2 years, 4 months866 days
How it ended
Re-entered (natural decay)
Latitude range
51.4°N to 51.4°SFinal inclination 51.4°
Mass
120 kg
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 51.4°, allowed a re-entry anywhere between 51.4°N and 51.4°S.
Life in orbit
2 years, 4 monthsSL-12 R/B(AUX MOTOR)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1983-020
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1985-0252
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1985-0252
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.