CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1990-0464
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 8548) re-entered Earth’s atmosphere on 13 October 1990, after 15 years, 4 months in orbit.
Official date
NORAD number
8548
International designator
1975-049F
Object type
Rocket body
Country
USSR
Launched
5 Jun 1975Plesetsk Cosmodrome
Re-entered (UTC)
13 Oct 1990UTC calendar day
Time in orbit
15 years, 4 months5,609 days
How it ended
Re-entered (natural decay)
Latitude range
62.7°N to 62.7°SFinal inclination 62.7°
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 62.7°, allowed a re-entry anywhere between 62.7°N and 62.7°S.
Life in orbit
15 years, 4 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 13 Oct 1990
1 entryFrom the same launch
1975-049
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1990-0464
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1990-0464
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.