CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1970-0020
COSMOS 303
COSMOS 303 (NORAD 4136) re-entered Earth’s atmosphere on 23 January 1970, after 3 months in orbit.
Official date
NORAD number
4136
International designator
1969-090A
Object type
Spacecraft
Country
USSR
Launched
18 Oct 1969Plesetsk Cosmodrome
Re-entered (UTC)
23 Jan 1970UTC calendar day
Time in orbit
3 months97 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
3 monthsCOSMOS 303’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1969-090
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1970-0020
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1970-0020
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.