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| Operator | Roscosmos |
|---|---|
| COSPAR ID | 2010-067A |
| SATCAT no. | 37254 |
| Mission duration | 159 days, 7 hours, 17 minutes, |
| Spacecraft properties | |
| Spacecraft type | Soyuz-TMA 11F732 |
| Manufacturer | Energia |
| Crew | |
| Crew size | 3 |
| Members | Dmitri Kondratyev Catherine Coleman Paolo Nespoli |
| Callsign | Варяг ("Varangian") |
| Start of mission | |
| Launch date | December 15, 2010, 19:09 UTC[1][2] |
| Rocket | Soyuz-FG |
| Launch site | Baikonur 1/5 |
| End of mission | |
| Landing date | May 24, 2011, 02:27 UTC[3][4] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Low Earth |
| Docking with ISS | |
| Docking port | Rassvet nadir |
| Docking date | 17 December 2010 20:12 UTC |
| Undocking date | 23 May 2011 21:35 UTC |
| Time docked | 157d 1h 23m |
 From left to right: Coleman, Kondratyev and Nespoli Soyuz programme (Crewed missions) | |
Soyuz TMA-20 was a human spaceflight to the International Space Station (ISS) and was part of the Soyuz programme. It lifted off from the Baikonur Cosmodrome in Kazakhstan on December 15, 2010, and docked with the ISS two days later. The three-person crew of Soyuz TMA-20 – Dmitri Kondratyev, Catherine Coleman and Paolo Nespoli – represented the ISS partner organizations of Roscosmos, NASA and the European Space Agency (ESA). Soyuz TMA-20's crew represented half of the members of Expedition 27; the other three members of the expedition arrived at the station on board Soyuz TMA-21 on April 6, 2011. The COSPAR ID of Soyuz TMA-20 was 2010-067A.[5] It is ISS flight 25S.
On May 24, 2011, after spending 159 days in space, the Soyuz TMA-20 descent module landed safely in Zhezkazgan, Kazakhstan, carrying Kondratyev, Coleman and Nespoli.
- ^ "Expedition 26". NASA. February 12, 2015. Archived from the original on February 3, 2023.
- ^ NASA Consolidated Launch Manifest
- ^ NASA Assigns Space Station Crews, Updates Expedition Numbering – NASA press release – 08-306 – November 21, 2008
- ^ "NASA Television to Cover Next Soyuz Departure, Arrival". Archived from the original on May 26, 2011. Retrieved May 19, 2011. – IEWY news
- ^ "SPACEWARN Bulletin No. 686". NASA. January 1, 2011. Retrieved May 25, 2011.