CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1986-0131
SL-6 PLAT
SL-6 PLAT (NORAD 16189) re-entered Earth’s atmosphere on 21 March 1986.
Official dateFragment record
NORAD number
16189
International designator
1985-099C
Object type
Fragment
Country
USSR
Parent launched
23 Oct 1985Baikonur Cosmodrome
Re-entered (UTC)
21 Mar 1986UTC calendar day
Time since launch
4 months149 days
How it ended
Re-entered (natural decay)
Latitude range
62.9°N to 62.9°SFinal inclination 62.9°
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 62.9°, allowed a re-entry anywhere between 62.9°N and 62.9°S.
Life in orbit
SL-6 PLAT’s lowest and highest points above Earth, week by week, from its tracking history.
From the same launch
1985-099
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1986-0131
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1986-0131
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.