Epeuva, or S/2176(Osiris)01 , is the first of two moons of Osiris of the White Sun system, the world that Simon and River Tam grew up on.
- Orbit: 96,100 km
- Orbital Period: 6.83 Days
- Diameter 1,846 km
- Mass 1.220x10^20 Tonnes
- Surface Gravity: 0.9726
- Date Terraformed: 2256
- Current Poplation: 2,911,000