CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1973-0322
SL-4 R/B
SL-4 R/B (NORAD 6668) re-entered Earth’s atmosphere on 13 June 1973, after 7 days in orbit.
Official date
NORAD number
6668
International designator
1973-036B
Object type
Rocket body
Country
USSR
Launched
6 Jun 1973Plesetsk Cosmodrome
Re-entered (UTC)
13 Jun 1973UTC calendar day
Time in orbit
7 days7 days
How it ended
Re-entered (natural decay)
Latitude range
65.4°N to 65.4°SFinal inclination 65.4°
Mass
2,350 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 65.4°, allowed a re-entry anywhere between 65.4°N and 65.4°S.
Life in orbit
7 daysCame down with SL-4 R/B
3 entriesFrom the same launch
1973-036
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1973-0322
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1973-0322
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.