CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0021
SL-4 DEB
SL-4 DEB (NORAD 9660) re-entered Earth’s atmosphere on 11 January 1977.
Official dateFragment record
NORAD number
9660
International designator
1977-001C
Object type
Fragment
Country
USSR
Parent launched
6 Jan 1977Baikonur Cosmodrome
Re-entered (UTC)
11 Jan 1977UTC calendar day
Time since launch
5 days5 days
How it ended
Re-entered (natural decay)
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
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 65.0°, allowed a re-entry anywhere between 65.0°N and 65.0°S.
Life in orbit
Also ended on 11 Jan 1977
2 entriesFrom the same launch
1977-001
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0021
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0021
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.