CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Orbital Register seal
Entry no.
1977-0219

SL-6 PLAT

SL-6 PLAT (NORAD 9400) re-entered Earth’s atmosphere on 20 May 1977.

Official dateFragment record
NORAD number
9400
International designator
1976-088C
Object type
Fragment
Country
USSR
Parent launched
1 Sep 1976Plesetsk Cosmodrome
Re-entered (UTC)
20 May 1977UTC calendar day
Time since launch
8 months261 days
How it ended
Re-entered (natural decay)
Latitude range
62.7°N to 62.7°SFinal inclination 62.7°

Where it came down

Latitude band its orbit allowed
Exact position not recorded

No position was recorded for this re-entry. Its final orbit, inclined at 62.7°, allowed a re-entry anywhere between 62.7°N and 62.7°S.

Life in orbit

SL-6 PLAT’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 20 May 1977

2 entries
1977-0220COSMOS 897 DEB1977-0221COSMOS 907 DEB

From the same launch

1976-088
1976-0534SL-6 R/B(1)1976-0630SL-6 R/B(2)1976-0665COSMOS 853
Orbital Register seal
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1977-0219
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.