Progress M-21
Russian unmanned cargo spacecraft
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Progress M-21 (Russian: Прогресс M-21) was a Russian unmanned Progress cargo spacecraft, which was launched in January 1994 to resupply the Mir space station.
A Progress-M spacecraft | |
| Mission type | Mir resupply |
|---|---|
| COSPAR ID | 1994-005A |
| SATCAT no. | 22975[1] |
| Spacecraft properties | |
| Spacecraft | Progress (No.221) |
| Spacecraft type | Progress-M[2] |
| Manufacturer | RKK Energia |
| Start of mission | |
| Launch date | 28 January 1994, 02:12:10 UTC[1] |
| Rocket | Soyuz-U[2] |
| Launch site | Baikonur, Site 1/5 |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 23 March 1994, 05:13 UTC[3] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 194 km[3] |
| Apogee altitude | 236 km[3] |
| Inclination | 51.6°[3] |
| Period | 88.5 minutes[3] |
| Epoch | 28 January 1994 |
| Docking with Mir | |
| Docking port | Kvant-1 aft[3] |
| Docking date | 30 January 1994, 03:56:13 UTC |
| Undocking date | 23 March 1994, 01:20:29 UTC |
Launch
Progress M-21 launched on 28 January 1994 from the Baikonur Cosmodrome in Kazakhstan. It used a Soyuz-U rocket.[2]
Docking
Decay
It remained in orbit until 23 March 1994, when it was deorbited. The deorbit burn occurred at 04:23 UTC, and the mission ended at 05:13 UTC.[3]
