CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1977-0184
SL-6 R/B(1)
SL-6 R/B(1) (NORAD 9881) re-entered Earth’s atmosphere on 19 April 1977, after 26 days in orbit.
Official date
NORAD number
9881
International designator
1977-021B
Object type
Rocket body
Country
USSR
Launched
24 Mar 1977Plesetsk Cosmodrome
Re-entered (UTC)
19 Apr 1977UTC calendar day
Time in orbit
26 days26 days
How it ended
Re-entered (natural decay)
Latitude range
62.8°N to 62.8°SFinal inclination 62.8°
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 62.8°, allowed a re-entry anywhere between 62.8°N and 62.8°S.
Life in orbit
26 daysSL-6 R/B(1)’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1977-021
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1977-0184
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.