CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1999-0125
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 12519) re-entered Earth’s atmosphere on 30 April 1999, after 17 years, 10 months in orbit.
Official date
NORAD number
12519
International designator
1981-054E
Object type
Rocket body
Country
USSR
Launched
9 Jun 1981Plesetsk Cosmodrome
Re-entered (UTC)
30 Apr 1999UTC calendar day
Time in orbit
17 years, 10 months6,534 days
How it ended
Re-entered (natural decay)
Latitude range
61.8°N to 61.8°SFinal inclination 61.8°
Mass
5,000 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 61.8°, allowed a re-entry anywhere between 61.8°N and 61.8°S.
Life in orbit
17 years, 10 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1981-054
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1999-0125
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1999-0125
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.