1994-017A
STEP Mission 0 was the TAOS (Technology for Autonomous Operational Survivability) payload, built by TRW and USAF Phillips Lab using the DSI/TRW Eagle (LEOStar) bus, and operated by Phillips Lab. The mission was intended to test out technology to make satellites more autonomous of ground controllers. The 502 kg satellite was launched by the first Taurus launch vehicle from a `bare base' pad, 576-E, at Vandenberg AFB.
| STEP 0 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1994 Mar 13 | 2232 | Launch by Taurus 2110 | V 576E |
| T+1:22 Stage 1 sep 39 km 2.08 km/s | -6200 x 50? | ||
| T+1:22 Stage 2 burn | |||
| T+2:43 Stage 2 burnout | |||
| T+2:48 Stage 2 sep | |||
| T+2:50 Stage 3 burn 128 km 4.54 km/s | -5100? x 175? | ||
| T+2:53 Fairing sep 131 km 4.57 km/s | -5000? x 180? | ||
| 2236 | T+4:11 Stage 3 burnout | ||
| 2243 | T+11:21 Stage 3 sep | -3000? x 770 | |
| 2243 | T+11:32 Stage 4 burn | ||
| 2244 | T+12:40 Stage 4 burnout | ||
| 2246? | STEP 0 sep | ||
| 2248? | DARPASAT sep | ||
| 539 x 559 x 105.0 | |||
| 1994 Apr? | Attitude control failure | ||
| 1994 Sep | Operations resume | ||
| 1995 Mar 13 | Decommissioned per OSC | ||
| 1996 Jun | Control to AFSPACECOM | ||
| 2000 Mar | Still operating | ||
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