1966-029A
KH-4A Mission 1031 (CORONA 107) was launched on 1966 Apr 7 by TAT Agena D from Vandenberg on the 31st twin-bucket J-1 mission. The apogee was about 20 km lower than planned. Mission 1031-1 and 1031-2 lasted 7 and 4 days respectively; during the first mission the perigee latitude was around 23N while it had reached 39N by the second mission. The orbit had a nearly repeating ground track after 16 revs. NPIC commented that the advantages of multiple coverage of some targets was potentially outweighed by the fact that other targets were never overflown at all. The camera system included a new delay circuit betwee the forward and aft cameras which permitted improved stereo photography. The mission covered the USSR, the Warsaw Pact region and Vietnam, as well as targets in Sri Lanka, Indonesia, Taiwan, Libya, Sudan, West Africa, and South America.
| KH-4A Mission 1031 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1966 Apr 7 | 2202:55 | Launch by Thor SLV-2A Agena D | V Complex 1, Pad 1 |
| 2203:52 | Castor sep (T+0:57) | ||
| 2205:24 | Thor MECO (T+2:29) | ||
| 2205:33 | Thor VECO (T+2:38) | ||
| 2205:39 | Thor sep (T+2:44) | ||
| 2205:45 | Agena burn (T+2:50) | ||
| 2209:50 | Agena MECO (T+6:55) | 89.68 197 x 322 x 75.08 (VCR) | |
| 1966 Apr 9 | 2130 | 89.56 193 x 312 x 75.1 (RAE) | |
| 1966 Apr 14 | 2238:42 | D-Timer start | |
| 2240:06 | SRV-1 ejected rev 113 | ||
| 2240:16 | Retro | ||
| 2240:28 | T/C sep | ||
| Entry | |||
| Main para out | |||
| 1966 Apr 14 | 2320? | SRV-1 recovered midair | |
| 20 32N 148 49W | |||
| 1966 Apr 15 | 89.5 190 x 301 x 75.1 (SSR) | ||
| 1966 Apr 18 | 2200?? | SRV-2 ejected rev 177 | |
| 1966 Apr 18 | 2240? | SRV-2 recovered midair | |
| 20 57N 152 12W | |||
| 1966 Apr 26 | 0824? | Reentered | |
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