CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1980-0093
COSMOS 373
COSMOS 373 (NORAD 4590) re-entered Earth’s atmosphere on 8 March 1980, after 9 years, 4 months in orbit.
Official date
NORAD number
4590
International designator
1970-087A
Object type
Spacecraft
Country
USSR
Launched
20 Oct 1970Baikonur Cosmodrome
Re-entered (UTC)
8 Mar 1980UTC calendar day
Time in orbit
9 years, 4 months3,427 days
How it ended
Re-entered (natural decay)
Latitude range
62.9°N to 62.9°SFinal inclination 62.9°
Mass
3,300 kg
Operator
PKO
Built by
TSKBM / KB-1
Bus
IS
Programme
IS 5V91
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 62.9°, allowed a re-entry anywhere between 62.9°N and 62.9°S.
Life in orbit
9 years, 4 monthsCOSMOS 373’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 8 Mar 1980
1 entryFrom the same launch
1970-087
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1980-0093
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1980-0093
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.