CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0200
SL-4 R/B
SL-4 R/B (NORAD 9939) re-entered Earth’s atmosphere on 1 May 1977, after 5 days in orbit.
Official date
NORAD number
9939
International designator
1977-030B
Object type
Rocket body
Country
USSR
Launched
26 Apr 1977Plesetsk Cosmodrome
Re-entered (UTC)
1 May 1977UTC calendar day
Time in orbit
5 days5 days
How it ended
Re-entered (natural decay)
Latitude range
67.1°N to 67.1°SFinal inclination 67.1°
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 67.1°, allowed a re-entry anywhere between 67.1°N and 67.1°S.
Life in orbit
5 daysAlso ended on 1 May 1977
2 entriesFrom the same launch
1977-030
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0200
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0200
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.