1976-065A
Mission 12 was maintained in a 155 x 240 km orbit until Oct 29, when its orbital variation was increased to range from 138-163 x 250-280 km. It had a record lifetime to date of 159 days.
| HEXAGON 12 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1976 Jul 8 | 1830 | Launch by Titan IIID | V SLC4E |
| T+1:49? Stage 1 burn 2:27 | |||
| T+1:55 SRM burnout | |||
| T+1:55 SRM sep | |||
| T+4:16 Stage 1 MECO | |||
| T+4:16 Stage 1 sep | |||
| T+4:16 Stage 2 burn | |||
| T+5:05? Fairing | |||
| 1837? | T+7:44? Stage 2 MECO | ||
| 1838? | T+8:00 Stage 2 sep | ||
| 88.5 159 x 242 x 97.0 | |||
| 2005? | SSU deploy (notional) | ||
| 2214? | S3-3 deploy (notional) | ||
| 1976 Jul 8 | 88.39 155 x 234 x 97.0 | ||
| 1976 Jul 21 | 88.40 154 x 235 x 97.0 | ||
| 1976 Aug 3 | 2107? | SRV-1 deorbit | |
| 1976 Aug 11 | 88.38 155 x 234 x 97.0 | ||
| 1976 Sep 5 | 88.50 158 x 242 x 97.0 | ||
| 1976 Sep 6 | 2157? | SRV-2 deorbit | |
| 1976 Sep 7 | Mapping op 279 last image | ||
| 1976 Sep 8 | 2228? | SRV-5 deorbit opp | |
| 2300? | SRV 1212-5 recovered after 62d | ||
| 1976 Sep 10 | DB-15 turned off | ||
| 1976 Oct 2 | 88.34 155 x 229 x 96.9 | ||
| 1976 Oct 19 | 2200? | SRV-3 deorbit | |
| 1976 Oct 29 | 88.71 146 x 274 x 96.9 | ||
| 1976 Nov 14 | 88.68 140 x 277 x 96.9 | ||
| 1976 Dec 1 | 88.87 163 x 273 x 96.9 | ||
| 1976 Dec 8 | 88.76 138 x 287 x 96.9 | ||
| 1976 Dec 9 | 2143? | SRV-4 deorbit | |
| 1976 Dec 12 | 88.70 163 x 256 x 96.9 | ||
| 1976 Dec 14 | Reentered after 159d | ||
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