CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1985-0054
SL-4 R/B
SL-4 R/B (NORAD 15590) re-entered Earth’s atmosphere on 4 March 1985, after 3 days in orbit.
Official date
NORAD number
15590
International designator
1985-019B
Object type
Rocket body
Country
USSR
Launched
1 Mar 1985Plesetsk Cosmodrome
Re-entered (UTC)
4 Mar 1985UTC calendar day
Time in orbit
3 days3 days
How it ended
Re-entered (natural decay)
Latitude range
72.9°N to 72.9°SFinal inclination 72.9°
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 72.9°, allowed a re-entry anywhere between 72.9°N and 72.9°S.
Life in orbit
3 daysAlso ended on 4 Mar 1985
2 entriesFrom the same launch
1985-019
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1985-0054
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1985-0054
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.