CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1991-0456

FOTON 4

FOTON 4 (NORAD 21737) landed on 20 October 1991, after 16 days in orbit.

Official date
NORAD number
21737
International designator
1991-070A
Object type
Spacecraft
Country
USSR
Launched
4 Oct 1991Plesetsk Cosmodrome
Landed (UTC)
20 Oct 1991UTC calendar day
Time in orbit
16 days16 days
How it ended
Landed
Latitude range
62.8°N to 62.8°SFinal inclination 62.8°
Mass
2,151 kg
Operator
TsSKB
Built by
TsSKB
Bus
Foton
Programme
Foton

Where it came down

Latitude band its orbit allowed
Exact position not recorded

No position was recorded for this re-entry. Its final orbit, inclined at 62.8°, allowed a re-entry anywhere between 62.8°N and 62.8°S.

Life in orbit

16 days

Also ended on 20 Oct 1991

1 entry
1991-0455MIR DEB

From the same launch

1991-070
1991-0452SL-4 R/B
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0456
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