1979-082A
High Energy Astronomy Observatory 3 was launched on 1979 Sep 20 at 0527:59 by an Atlas Centaur from Cape Canaveral. Centaur AC-53 delivered HEAO 3 into a 94.4 min, 485 x 501 km x 43.6 deg orbit at 0534 and separated at 0541. It transmitted until 1981 May 20 and reentered on 1981 Dec 7.
| HEAO 3 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1979 Sep 20 | 0527:59 | Launch by AC-53 | |
| T+2:20s BECO | |||
| T+2:21 Booster sep | |||
| T+3:05 Insulation panels sep | |||
| 0532:07 | T+4:08 SECO | ||
| T+4:10s Atlas sep | |||
| T+4:21s Centaur MES | |||
| 0532:32s | T+4:33s Fairing | ||
| 0539:39 | MES+7:03 or T+11:40 Centaur MECO | ||
| M+14:18 Solar panels deploy | |||
| 0551:49? | T+23:50? Centaur sep | 94.4 485 x 501 x 43.6 | |
| 1981 May 20 | end of ops | ||
| 1981 Dec 7 | Reentered | ||
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