CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
2013-0142
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 20539) re-entered Earth’s atmosphere on 5 May 2013, after 23 years, 1 month in orbit.
Official date
NORAD number
20539
International designator
1990-026D
Object type
Rocket body
Country
USSR
Launched
27 Mar 1990Plesetsk Cosmodrome
Re-entered (UTC)
5 May 2013UTC calendar day
Time in orbit
23 years, 1 month8,440 days
How it ended
Re-entered (natural decay)
Latitude range
60.8°N to 60.8°SFinal inclination 60.8°
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 60.8°, allowed a re-entry anywhere between 60.8°N and 60.8°S.
Life in orbit
23 years, 1 monthSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 5 May 2013
3 entriesFrom the same launch
1990-026
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/2013-0142
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/2013-0142
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.