CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1973-0053
COSMOS 523
COSMOS 523 (NORAD 6222) re-entered Earth’s atmosphere on 7 March 1973, after 5 months in orbit.
Official date
NORAD number
6222
International designator
1972-078A
Object type
Spacecraft
Country
USSR
Launched
5 Oct 1972Plesetsk Cosmodrome
Re-entered (UTC)
7 Mar 1973UTC calendar day
Time in orbit
5 months153 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 523’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 7 Mar 1973
1 entryFrom the same launch
1972-078
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1973-0053
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1973-0053
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.