CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2000-0101
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 15983) re-entered Earth’s atmosphere on 20 April 2000, after 14 years, 7 months in orbit.
Official date
NORAD number
15983
International designator
1985-074D
Object type
Rocket body
Country
USSR
Launched
22 Aug 1985Plesetsk Cosmodrome
Re-entered (UTC)
20 Apr 2000UTC calendar day
Time in orbit
14 years, 7 months5,355 days
How it ended
Re-entered (natural decay)
Latitude range
62.2°N to 62.2°SFinal inclination 62.2°
Mass
4,500 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 62.2°, allowed a re-entry anywhere between 62.2°N and 62.2°S.
Life in orbit
14 years, 7 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 20 Apr 2000
2 entriesFrom the same launch
1985-074
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2000-0101
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2000-0101
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.