CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1980-0249
COSMOS 549
COSMOS 549 (NORAD 6373) re-entered Earth’s atmosphere on 29 June 1980, after 7 years, 4 months in orbit.
Official date
NORAD number
6373
International designator
1973-010A
Object type
Spacecraft
Country
USSR
Launched
28 Feb 1973Plesetsk Cosmodrome
Re-entered (UTC)
29 Jun 1980UTC calendar day
Time in orbit
7 years, 4 months2,678 days
How it ended
Re-entered (natural decay)
Latitude range
74.0°N to 74.0°SFinal inclination 74.0°
Mass
434 kg
Operator
GRU
Built by
Southern SDB
Bus
Tselina-OM
Programme
Tselina-OM
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 74.0°, allowed a re-entry anywhere between 74.0°N and 74.0°S.
Life in orbit
7 years, 4 monthsCOSMOS 549’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 29 Jun 1980
2 entriesFrom the same launch
1973-010
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1980-0249
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1980-0249
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.