CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1990-0546
SL-12 PLAT
SL-12 PLAT (NORAD 21018) re-entered Earth’s atmosphere on 21 December 1990.
Official dateFragment record
NORAD number
21018
International designator
1990-112C
Object type
Fragment
Country
USSR
Parent launched
20 Dec 1990Baikonur Cosmodrome
Re-entered (UTC)
21 Dec 1990UTC calendar day
Time since launch
1 day1 days
How it ended
Re-entered (natural decay)
Latitude range
51.6°N to 51.6°SFinal inclination 51.6°
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
From the same launch
1990-112
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1990-0546
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1990-0546
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.