KH-7 28 was launched on 1966 May 14, by Atlas Agena D from Vandenberg. No archival orbit data is available.
| KH-7 28 | |||
| Date | Time | Event | Orbit | 
|---|---|---|---|
| 1966 May 14 | 1830? | Launch by Atlas Agena D | V | 
| T+2:18? BECO | |||
| T+4:37? SECO | |||
| T+4:54? VECO | |||
| T+4:59? Atlas sep | |||
| T+5:51? Agena MES | |||
| 1839? | T+9:50? Agena MECO | ||
| OCV sep from Agena | |||
| Subsatellite sep from Agena | |||
| 1966 May 15 | 1444 | (Agena D) | 88.79 105 x 324 x 110.7 | 
| 1966 May 15 | 89.4 131 x 357 x 110.50 (SSR) | ||
| 1966 May 16 | 89.4 133 x 358 x 110.6 | ||
| 1966 May 19? | SRV recovered? (guess) | ||
| 1966 May 21 | Landed after 6d | ||