CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1981-0169
COSMOS 397 DEB
COSMOS 397 DEB (NORAD 5528) re-entered Earth’s atmosphere on 17 April 1981.
Official dateFragment record
NORAD number
5528
International designator
1971-015BS
Object type
Fragment
Country
USSR
Parent launched
25 Feb 1971Baikonur Cosmodrome
Re-entered (UTC)
17 Apr 1981UTC calendar dayAlso recorded as 21 Feb 1978
Time since launch
10 years, 1 month3,704 days
How it ended
Re-entered (natural decay)
Latitude range
65.8°N to 65.8°SFinal inclination 65.8°
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 65.8°, allowed a re-entry anywhere between 65.8°N and 65.8°S.
Life in orbit
COSMOS 397 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 17 Apr 1981
3 entriesFrom the same launch
1971-015
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1981-0169
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1981-0169
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.