CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1989-0233
EXPLORER 11 DEB
EXPLORER 11 DEB (NORAD 3739) re-entered Earth’s atmosphere on 3 March 1989.
Official dateFragment record
NORAD number
3739
International designator
1961-013B
Object type
Fragment
Country
United States
Parent launched
27 Apr 1961Cape Canaveral
Re-entered (UTC)
3 Mar 1989UTC calendar day
Time since launch
27 years, 10 months10,172 days
How it ended
Re-entered (natural decay)
Latitude range
28.8°N to 28.8°SFinal inclination 28.8°
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 28.8°, allowed a re-entry anywhere between 28.8°N and 28.8°S.
Life in orbit
EXPLORER 11 DEB’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 3 Mar 1989
7 entries
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1989-0233
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1989-0233
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.