KH-8 28 (GAMBIT 66) was launched on 1970 Aug 18 by Titan 3B Agena D from Vandenberg. In addition to its close-look imaging mission, it also carried an accelerometer to study the density of the Earth's atmosphere. Perigee of this mission, at 151 km, was higher than for any other KH-8 flight bar the first two test flights. The spacecraft remained in orbit for 16 days.
| KH-8 28 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1970 Aug 18 | Launch by Titan 3B Agena D | V SLC4W | |
| 2312 | 89.48 130 x 366 x 111.0 | ||
| 1970 Aug 19 | 0341 | 89.49 139 x 358 x 111.0 | |
| Raise apo | |||
| 1970 Aug 21 | 0459 | 89.64 149 x 363 x 110.9 | |
| 1970 Aug 23 | 1215 | 89.53 148 x 354 x 111.0 | |
| Raise apo | |||
| 1970 Aug 24 | 1513 | 89.94 149 x 393 x 110.9 | |
| Raise orbit | |||
| 1970 Aug 25 | 0016 | 90.46 151 x 442 x 111.0 | |
| 1970 Aug 25 | 2251 | 90.00 149 x 399 x 111.0 | |
| 1970 Aug 29 | 0017 | 89.60 147 x 361 x 111.0 | |
| Raise apo | |||
| 1970 Aug 30 | 2235 | 89.97 150 x 395 x 111.0 | |
| 1970 Sep 3 | 0430 | 89.77 150 x 376 x 111.0 | |
| 1970 Sep 4 | 0123 | 88.48 137 x 260 x 111.0 | |
| 1970 Sep 4 | Reentered after 16 days | ||