CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1970-0074
COSMOS 321
COSMOS 321 (NORAD 4308) re-entered Earth’s atmosphere on 23 March 1970, after 2 months in orbit.
Official date
NORAD number
4308
International designator
1970-006A
Object type
Spacecraft
Country
USSR
Launched
20 Jan 1970Plesetsk Cosmodrome
Re-entered (UTC)
23 Mar 1970UTC calendar day
Time in orbit
2 months62 days
How it ended
Re-entered (natural decay)
Latitude range
71.0°N to 71.0°SFinal inclination 71.0°
Mass
265 kg
Operator
Southern SDB
Built by
Southern SDB
Bus
DS-U2
Programme
DS-U2-MG
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 71.0°, allowed a re-entry anywhere between 71.0°N and 71.0°S.
Life in orbit
2 monthsCOSMOS 321’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 23 Mar 1970
1 entryFrom the same launch
1970-006
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1970-0074
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1970-0074
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.