CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0172
COSMOS 777 DEB *
COSMOS 777 DEB * (NORAD 8637) re-entered Earth’s atmosphere on 4 April 1977.
Official dateFragment record
NORAD number
8637
International designator
1975-102T
Object type
Fragment
Country
USSR
Parent launched
29 Oct 1975Baikonur Cosmodrome
Re-entered (UTC)
4 Apr 1977UTC calendar day
Time since launch
1 year, 5 months523 days
How it ended
Re-entered (natural decay)
Latitude range
64.9°N to 64.9°SFinal inclination 64.9°
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 64.9°, allowed a re-entry anywhere between 64.9°N and 64.9°S.
Life in orbit
COSMOS 777 DEB *’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 4 Apr 1977
1 entryFrom the same launch
1975-102
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0172
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0172
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.