CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1975-0063
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 6304) re-entered Earth’s atmosphere on 16 March 1975, after 2 years, 5 months in orbit.
Official date
NORAD number
6304
International designator
1972-081E
Object type
Rocket body
Country
USSR
Launched
14 Oct 1972Plesetsk Cosmodrome
Re-entered (UTC)
16 Mar 1975UTC calendar day
Time in orbit
2 years, 5 months883 days
How it ended
Re-entered (natural decay)
Latitude range
65.7°N to 65.7°SFinal inclination 65.7°
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 65.7°, allowed a re-entry anywhere between 65.7°N and 65.7°S.
Life in orbit
2 years, 5 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 16 Mar 1975
3 entriesFrom the same launch
1972-081
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1975-0063
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1975-0063
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.