CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1974-0105
COSMOS 639
COSMOS 639 (NORAD 7240) landed on 15 April 1974, after 11 days in orbit.
Official date
NORAD number
7240
International designator
1974-019A
Object type
Spacecraft
Country
USSR
Launched
4 Apr 1974Plesetsk Cosmodrome
Landed (UTC)
15 Apr 1974UTC calendar day
Time in orbit
11 days11 days
How it ended
Landed
Latitude range
81.3°N to 81.3°SFinal inclination 81.3°
Mass
2,310 kg
Operator
GUKOS RVSN
Built by
TsSKB
Bus
Zenit-4MK
Programme
Zenit-4MK
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 81.3°, allowed a re-entry anywhere between 81.3°N and 81.3°S.
Life in orbit
11 daysAlso ended on 15 Apr 1974
1 entryFrom the same launch
1974-019Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1974-0105
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1974-0105
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.