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HEAO 1
Launch Details
| Launched | 11 August 1977 |
| Flight ended | 14 March 1979 |
| Status | Decayed |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 10217 |
| COSPAR ID | 1977-075A |
| Observing |
Launched alongside
ATLAS CENTAUR R/B