Dwarf planet, Kuiper belt
Orcus
Sometimes called the anti-Pluto: it moves in step with Neptune just like Pluto, but always on the opposite side of its orbit.
- Size
- 910 km
- Orbit
- 247.3 years
- Distance from Sun
- 30.7 to 48.1 AU
- Day
- 13.2 hours
Can we live on Orcus?
Air: none to speak of. You’d live in sealed, pressurised habitats.
Ground: Water ice with some ammonia.
Atmosphere
- None to speak of
Measured by Keck, VLT