1988-077A
In contrast to VORTEX 11, it appears that VORTEX 12 (USA 31) failed to reach its final orbit, and six years later a number of debris objects in transfer orbit were cataloged as coming from the 1988-77 launch. The Transtage was damaged during ascent, and the fuel tank leaked in parking orbit. The He tank leaked during the first burn. At the second burn, the He had been depleted and the restart failed.
The UN registered orbit was an unphysical 99.8, 151 x 14103 km x 29.3 deg; probably the apogee was missing a decimal point. Later debris objects were registered in a 465 x 39449 km x 26.7 deg orbit.
| VORTEX 12 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1988 Sep 2 | 1205:02 | Launch by Titan 3D/Transtage (34D-3) | CC |
| T+1:50 Stage 1 ignition | |||
| T+2:02 SRM sep | |||
| T+4:35 St 1 sep | |||
| 1209 | T+4:45 Fairing sep | ||
| 1209:51 | T+4:49 Transtage damaged, leak | ||
| 1213? | Stage 2 MECO | 99.8 151 x 1410.3? x 29.3 | |
| 1213 | T+8:05 Stage 2 sep | ||
| 1229? | Transtage burn 1 (310s) | 161 x 35888 x 26.7? | |
| 708.9 465 x 39449 x 26.7 (D) | |||
| Coast (5h15m) | |||
| 1800? | Transtage failed to restart | ||
| 1815? | Transtage sep | ||
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