Soyuz MS-09
Soyuz MS-09 launched from Baikonur Site 1/5 on June 6, 2018 UTC with commander Sergei Prokopyev, ESA astronaut Alexander Gerst, and NASA astronaut Serena Auñón-Chancellor for Expeditions 56 and 57. A small pressure leak discovered in its orbital module in August was sealed and investigated; the spacecraft was cleared for return. The same crew landed safely southeast of Zhezkazgan on December 20 after about 197 days, completing Gerst's Horizons mission.
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Identity
- Aliases
- AltaiISS Soyuz 55SSoyuz MS-09 / Expeditions 56-57Horizons
- Name
- Soyuz MS-09
- Status
- completed
Details
- Astronauts
- Description
- Soyuz MS-09 launched from Baikonur Site 1/5 on June 6, 2018 UTC with commander Sergei Prokopyev, ESA astronaut Alexander Gerst, and NASA astronaut Serena Auñón-Chancellor for Expeditions 56 and 57. A small pressure leak discovered in its orbital module in August was sealed and investigated; the spacecraft was cleared for return. The same crew landed safely southeast of Zhezkazgan on December 20 after about 197 days, completing Gerst's Horizons mission.
- End Date
- 2018-12-20
- Launch Site
- Outcome
- Successful ISS crew transport and return despite a repaired orbital-module pressure leak. MS-09 carried Prokopyev, Gerst, and Auñón-Chancellor for Expeditions 56-57 and returned them safely after about 197 days, completing Horizons.
- Programs
- Start Date
- 2018-06-06
- Vehicle Families
Links
Assets & Meta
- Creation Time
- July 9, 2026 at 00:54:26 UTC
- Updated Time
- July 29, 2026 at 08:53:52 UTC
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- Affiliations
- Search Name
- Soyuz MS-09 Altai ISS Soyuz 55S Soyuz MS-09 / Expeditions 56-57 Horizons
- Space Stations
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