CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1982-0095
HEAO 2
HEAO 2 (NORAD 11101) re-entered Earth’s atmosphere on 25 March 1982, after 3 years, 4 months in orbit.
Official date
NORAD number
11101
International designator
1978-103A
Object type
Spacecraft
Country
United States
Launched
13 Nov 1978Cape Canaveral
Re-entered (UTC)
25 Mar 1982UTC calendar day
Time in orbit
3 years, 4 months1,228 days
How it ended
Re-entered (natural decay)
Latitude range
23.5°N to 23.5°SFinal inclination 23.5°
Mass
3,130 kg
Operator
NASA MSFC
Built by
TRW
Bus
HEAO
Programme
HEAO
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 23.5°, allowed a re-entry anywhere between 23.5°N and 23.5°S.
Life in orbit
3 years, 4 monthsHEAO 2’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 25 Mar 1982
2 entriesFrom the same launch
1978-103
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1982-0095
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1982-0095
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.