CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0014
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 7741) re-entered Earth’s atmosphere on 12 January 1991, after 15 years, 8 months in orbit.
Official date
NORAD number
7741
International designator
1975-029D
Object type
Rocket body
Country
USSR
Launched
14 Apr 1975Plesetsk Cosmodrome
Re-entered (UTC)
12 Jan 1991UTC calendar day
Time in orbit
15 years, 8 months5,752 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
15 years, 8 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1975-029
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0014
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0014
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.