CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1964-0103
COSMOS 31
COSMOS 31 (NORAD 803) re-entered Earth’s atmosphere on 20 October 1964, after 4 months in orbit.
Official date
NORAD number
803
International designator
1964-028A
Object type
Spacecraft
Country
USSR
Launched
6 Jun 1964Kapustin Yar
Re-entered (UTC)
20 Oct 1964UTC calendar day
Time in orbit
4 months136 days
How it ended
Re-entered (natural decay)
Latitude range
48.9°N to 48.9°SFinal inclination 48.9°
Mass
247 kg
Operator
OKB-586
Built by
OKB-586
Bus
DS
Programme
DS-MT
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 48.9°, allowed a re-entry anywhere between 48.9°N and 48.9°S.
Life in orbit
4 monthsCOSMOS 31’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 20 Oct 1964
2 entriesFrom the same launch
1964-028
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1964-0103
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1964-0103
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.