Back Союз 17 Bulgarian সয়ূজ ১৭ Bengali/Bangla Soiuz 17 Catalan Sojuz 17 Czech Sojus 17 German Soyuz 17 Spanish سایوز۱۷ Persian Sojuz 17 Finnish Soyouz 17 French Soiuz 17 Galician
| Mission type | Docking with Salyut 4 |
|---|---|
| Operator | Soviet space program |
| COSPAR ID | 1975-001A |
| SATCAT no. | 07604 |
| Mission duration | 29 days 13 hours 19 minutes 45 seconds |
| Orbits completed | 479 |
| Spacecraft properties | |
| Spacecraft | Soyuz 7K-T No.5 |
| Spacecraft type | Soyuz 7K-T |
| Manufacturer | NPO Energia |
| Launch mass | 6570 kg[1] |
| Landing mass | 1200 kg |
| Crew | |
| Crew size | 2 |
| Members | Aleksei Gubarev Georgy Grechko |
| Callsign | Зенит (Zenit - "Zenith") |
| Start of mission | |
| Launch date | 10 January 1975, 21:43:37 UTC |
| Rocket | Soyuz |
| Launch site | Baikonur, Site 1/5[2] |
| End of mission | |
| Landing date | 9 February 1975, 11:03:22 UTC |
| Landing site | 110 km at the northeast of Tselinograd, Kazakhstan |
| Orbital parameters | |
| Reference system | Geocentric orbit[3] |
| Regime | Low Earth orbit |
| Perigee altitude | 293.0 km |
| Apogee altitude | 354.0 km |
| Inclination | 51.6° |
| Period | 91.7 minutes |
| Docking with Salyut 4 | |
| Docking date | 12 January 1975 |
| Undocking date | 9 February 1975 |
| Time docked | 28 days |
 Vimpel Diamond patch | |
Soyuz 17 (Russian: Союз 17, Union 17) was the first of two long-duration missions to the Soviet Union's Salyut 4 space station in 1975. The flight by cosmonauts Aleksei Gubarev and Georgy Grechko set a Soviet mission-duration record of 29 days, surpassing the 23-day record set by the ill-fated Soyuz 11 crew aboard Salyut 1 in 1971.
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