Russian Orbital Service Station
Previously planned layout of ROS from 2017–2025 | |
| Station statistics | |
|---|---|
| Crew | 3 or more |
| Launch | 2027–2035 (planned) |
| Carrier rocket | Angara A5 |
| Launch pad | Vostochny Cosmodrome Site 1A |
| Orbital inclination | 51.6° |
| Typical orbit altitude | 400 km (planned) |
| External images | |
|---|---|
| First stage vision 2025-2030 | |
| Second stage vision 2030-2035 |
The Russian Orbital Service Station (Russian: Российская орбитальная станция, Rossiyskaya orbital'naya stantsiya) (ROS, Russian: РОС) is a proposed Russian orbital space station scheduled to begin construction in 2027. Initially an evolution of the Orbital Piloted Assembly and Experiment Complex (OPSEK) concept, ROS developed into plans for a new standalone Russian space station built from scratch without modules from the Russian Orbital Segment of the ISS. However on December 2025, Oleg Orlov announced that ROS will once again be assembled as part of the ISS, and will be separated from the rest of the station shortly before it is scheduled to be deorbited by 2030.