CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1987-0486
SL-4 R/B
SL-4 R/B (NORAD 18381) re-entered Earth’s atmosphere on 19 October 1987, after 20 days in orbit.
Official date
NORAD number
18381
International designator
1987-083B
Object type
Rocket body
Country
USSR
Launched
29 Sep 1987Plesetsk Cosmodrome
Re-entered (UTC)
19 Oct 1987UTC calendar day
Time in orbit
20 days20 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
20 daysAlso ended on 19 Oct 1987
2 entriesFrom the same launch
1987-083
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1987-0486
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1987-0486
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.