CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1987-0129
SL-4 R/B
SL-4 R/B (NORAD 17850) re-entered Earth’s atmosphere on 14 April 1987, after 5 days in orbit.
Official date
NORAD number
17850
International designator
1987-032B
Object type
Rocket body
Country
USSR
Launched
9 Apr 1987Baikonur Cosmodrome
Re-entered (UTC)
14 Apr 1987UTC calendar day
Time in orbit
5 days5 days
How it ended
Re-entered (natural decay)
Latitude range
64.8°N to 64.8°SFinal inclination 64.8°
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 64.8°, allowed a re-entry anywhere between 64.8°N and 64.8°S.
Life in orbit
5 daysAlso ended on 14 Apr 1987
3 entriesFrom the same launch
1987-032
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1987-0129
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1987-0129
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.