Progress 27 (Russian: Прогресс 27) was a Soviet uncrewed Progress cargo spacecraft, which was launched in January 1987 to resupply the Mir space station.
 A Progress 7K-TG spacecraft | |
| Mission type | Mir resupply |
|---|---|
| COSPAR ID | 1987-005A |
| SATCAT no. | 17299[1] |
| Spacecraft properties | |
| Spacecraft | Progress (No.135) |
| Spacecraft type | Progress 7K-TG[2] |
| Manufacturer | NPO Energia |
| Start of mission | |
| Launch date | 16 January 1987, 06:06:23 UTC[1] |
| Rocket | Soyuz-U2[2] |
| Launch site | Baikonur, Site 1/5 |
| End of mission | |
| Disposal | Deorbited |
| Decay date | 25 February 1987, 15:16:45 UTC[3] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Perigee altitude | 183 km[3] |
| Apogee altitude | 263 km[3] |
| Inclination | 51.6°[3] |
| Period | 89.0 minutes[3] |
| Epoch | 16 January 1987 |
| Docking with Mir | |
| Docking port | Mir Core Module aft[3] |
| Docking date | 18 January 1987, 07:26:50 UTC |
| Undocking date | 23 February 1987, 11:29:01 UTC |
Launch
Progress 27 launched on 16 January 1987 from the Baikonur Cosmodrome in the Kazakh SSR. It used a Soyuz-U2 rocket.[2][4]
Docking
Progress 27 docked with the aft port of the Mir Core Module on 18 January 1987 at 07:26:50 UTC, and was undocked on 23 February 1987 at 11:29:01 UTC.[3][5]
Decay
It remained in orbit until 25 February 1987, when it was deorbited. The deorbit burn occurred at 15:16:45 UTC and the mission ended at 16:05 UTC.[3][5]
