Soyuz MS-28 explained

Soyuz MS-28
Names List:ISS 74S
Mission Type:ISS crew transport
Operator:Roscosmos
Mission Duration:180 days (planned)
Spacecraft:Soyuz MS-28 No. 759
Spacecraft Type:Soyuz MS
Manufacturer:Energia
Launch Date:September 2025 (planned)
Launch Rocket:Soyuz-2.1a
Launch Site:Baikonur, Site 31/6
Launch Contractor:RKTs Progress
Landing Date:March 2026 (planned)
Landing Site:Kazakh Steppe, Kazakhstan
Crew Size:3
Orbit Reference:Geocentric orbit
Orbit Regime:Low Earth orbit
Orbit Inclination:51.66°
Apsis:gee
Docking:
Docking Type:dock
Docking Port:Rassvet nadir
Docking Date:September 2025 (planned)
Undocking Date:March 2026 (planned)
Programme:Soyuz programme
Previous Mission:Soyuz MS-27
Next Mission:Soyuz MS-29

Soyuz MS-28, Russian production No. 759 and identified by NASA as Soyuz 74S, is a planned Russian crewed Soyuz spaceflight to launch from Site 31/6 at the Baikonur Cosmodrome in September 2025 to the International Space Station.

The mission is slated to be the first to launch after the termination of a NASA/Roscosmos barter agreement, where one Russian cosmonaut flies on a NASA spacecraft in exchange for one NASA astronaut flying on a Soyuz. Consequently,, this mission is currently scheduled to transport three Russian cosmonauts. However, NASA and Roscosmos are negotiating to extend their seat exchange program beyond 2025.[1]

Notes and References

  1. NASA’s Management of Risks to Sustaining ISS Operations through 2030 . September 26, 2024 . NASA Office of Inspector General . 14 . 2024-10-02.