CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1972-0047
COSMOS 391
COSMOS 391 (NORAD 4847) re-entered Earth’s atmosphere on 21 February 1972, after 1 year, 1 month in orbit.
Official date
NORAD number
4847
International designator
1971-002A
Object type
Spacecraft
Country
USSR
Launched
14 Jan 1971Plesetsk Cosmodrome
Re-entered (UTC)
21 Feb 1972UTC calendar day
Time in orbit
1 year, 1 month403 days
How it ended
Re-entered (natural decay)
Latitude range
70.9°N to 70.9°SFinal inclination 70.9°
Mass
200 kg
Operator
PVO
Built by
Southern SDB
Bus
DS-P1
Programme
DS-P1-I
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 70.9°, allowed a re-entry anywhere between 70.9°N and 70.9°S.
Life in orbit
1 year, 1 monthCOSMOS 391’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 21 Feb 1972
1 entryFrom the same launch
1971-002
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1972-0047
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1972-0047
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.