CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1971-0287
COSMOS 423
COSMOS 423 (NORAD 5246) re-entered Earth’s atmosphere on 26 November 1971, after 5 months in orbit.
Official date
NORAD number
5246
International designator
1971-047A
Object type
Spacecraft
Country
USSR
Launched
27 May 1971Plesetsk Cosmodrome
Re-entered (UTC)
26 Nov 1971UTC calendar day
Time in orbit
5 months183 days
How it ended
Re-entered (natural decay)
Latitude range
71.0°N to 71.0°SFinal inclination 71.0°
Mass
200 kg
Operator
PVO
Built by
Southern SDB
Bus
DS-P1
Programme
DS-P1-Yu A
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
5 monthsCOSMOS 423’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 26 Nov 1971
1 entryFrom the same launch
1971-047
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1971-0287
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1971-0287
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.