CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1971-0135
MARS 3 DEB
MARS 3 DEB (NORAD 5263) re-entered Earth’s atmosphere on 1 June 1971.
Official dateFragment record
NORAD number
5263
International designator
1971-049D
Object type
Fragment
Country
USSR
Parent launched
28 May 1971Baikonur Cosmodrome
Re-entered (UTC)
1 Jun 1971UTC calendar day
Time since launch
4 days4 days
How it ended
Re-entered (natural decay)
Latitude range
51.3°N to 51.3°SFinal inclination 51.3°
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 51.3°, allowed a re-entry anywhere between 51.3°N and 51.3°S.
Life in orbit
Also ended on 1 Jun 1971
1 entryFrom the same launch
1971-049
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1971-0135
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1971-0135
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.