1990-072A
Progress M 11F615A55 No. 204 (Progress M-4) was launched in Aug 1990. It docked with Mir on Aug 17 delivering 2689 kg of cargo. After undocking on Sep 18 it carried out the Fokus plasma gun experiment injecting plasma into the ionosphere. One debris object was cataloged prior to reentry, possibly related to Fokus.
| Progress M-4 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1990 Aug 15 | 0400:38 | Launch by Soyuz-U | KB |
| 0405 | Blok-I burn | ||
| 0409 | Blok-I sep | ||
| 0840 | 88.52 183 x 219 x 51.61 | ||
| 1200 | 89.70 249 x 269 x 51.60 | ||
| 1990 Aug 16 | 0700 | 89.73 250 x 271 x 51.61 | |
| 1990 Aug 17 | 0230 | 89.71 249 x 270 x 51.61 | |
| 0526:18 | Docked with Mir DP1 | ||
| 1990 Aug 18 | 1000 | 92.03 367 x 380 x 51.61 | |
| 1990 Sep 17 | 1242:43 | Undocked | |
| 1990 Sep 18 | 0500 | 92.37 373 x 407 x 51.61 | |
| 0620 | Fokus plasma source release | ||
| 1990 Sep 19 | 1730 | Object 72C tracked | |
| 1990 Sep 20 | 1105 | Retrofire | |
| 1142:49 | Reentered over Pacific | ||
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