CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1986-0132
SL-4 R/B
SL-4 R/B (NORAD 16646) re-entered Earth’s atmosphere on 22 March 1986, after 3 days in orbit.
Official date
NORAD number
16646
International designator
1986-023B
Object type
Rocket body
Country
USSR
Launched
19 Mar 1986Baikonur Cosmodrome
Re-entered (UTC)
22 Mar 1986UTC calendar day
Time in orbit
3 days3 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
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 51.6°, allowed a re-entry anywhere between 51.6°N and 51.6°S.
Life in orbit
3 daysFrom the same launch
1986-023
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1986-0132
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1986-0132
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.