CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1987-0208
SL-4 R/B
SL-4 R/B (NORAD 17976) re-entered Earth’s atmosphere on 1 June 1987, after 19 days in orbit.
Official date
NORAD number
17976
International designator
1987-042B
Object type
Rocket body
Country
USSR
Launched
13 May 1987Baikonur Cosmodrome
Re-entered (UTC)
1 Jun 1987UTC calendar day
Time in orbit
19 days19 days
How it ended
Re-entered (natural decay)
Latitude range
70.4°N to 70.4°SFinal inclination 70.4°
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 70.4°, allowed a re-entry anywhere between 70.4°N and 70.4°S.
Life in orbit
19 daysSL-4 R/B’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 1 Jun 1987
1 entryFrom the same launch
1987-042
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1987-0208
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1987-0208
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.