launched by Russia

Soyuz MS-09 / 55S

Success
JUN 06201811:12:41 UTC

Crewed flight with three cosmonauts. SiriusSat satellites were deployed on 15 August 2018 during a spacewalk. Crew return was delayed due to the launch failure of Soyuz MS-10; it was rescheduled for 20 December, after the MS-11 crew arrives on 3 December.

launched from Pad 1/5 Baikonur

aboard Soyuz FG into LEO

Spacecraft

Soyuz MS Soyuz MS-09

Space station crew

Payload

SiriusSat 1, 2

Science

Crew

Ascending
  • 01 Sergey Prokopyev from Russia
  • 02 Serena Auñón-Chancellor from USA
  • 03 Alexander Gerst from Germany
Descending
  • 01 Sergey Prokopyev from Russia
  • 02 Serena Auñón-Chancellor from USA
  • 03 Alexander Gerst from Germany

At the station

docked at ISS

returned to Earth Dec 20, 2018

last updated Oct 25, 2026