CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0515
SL-4 R/B
SL-4 R/B (NORAD 10511) re-entered Earth’s atmosphere on 18 December 1977, after 6 days in orbit.
Official date
NORAD number
10511
International designator
1977-115B
Object type
Rocket body
Country
USSR
Launched
12 Dec 1977Baikonur Cosmodrome
Re-entered (UTC)
18 Dec 1977UTC calendar day
Time in orbit
6 days6 days
How it ended
Re-entered (natural decay)
Latitude range
65.0°N to 65.0°SFinal inclination 65.0°
Mass
2,350 kg
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
6 daysAlso ended on 18 Dec 1977
1 entryFrom the same launch
1977-115
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0515
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0515
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.