1973-025A
Kosmos-556 was the 19th Zenit-4MK flight and the first to be part of the `spring polar' subgroup of Zenit missions launched in April and May to an inclination of 81.3 degrees.
| Kosmos-556 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1973 May 5 | 0700:00 | Launch by 11A57 | PL |
| 0704 | Blok-I burn | ||
| 0708 | Blok-I sep | ||
| 1014 | 88.89 216 x 223 x 81.3 | ||
| 1430 | 88.97 218 x 225 x 81.33 | ||
| Orbit raise | |||
| 1973 May 6 | 0931 | 89.25 208 x 265 x 81.3 | |
| 1973 May 11 | 1301 | 89.19 210 x 258 x 81.3 | |
| Lower perigee | |||
| 1973 May 13 | 0639 | 88.97 199 x 248 x 81.3 | |
| 2129 | 88.86 197 x 239 x 81.3 | ||
| 1973 May 13 | Engine sep | 89.19 210 x 255 x 81.32 | |
| 1973 May 14 | 0450? | Retrofire | |
| 0500? | PO sep | ||
| 0507? | Entry | ||
| 0518? | Landed after 8.9d | ||
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