Dwarf Planet
Haumea
A dwarf planet spinning once every 3.9 hours, stretched into an ellipsoid as a result. The first trans-Neptunian object known to have its own ring system.
| Type | Dwarf Planet |
|---|---|
| Parent body | Sun |
| Radius | 780 km · 0.122 R⊕ |
| Mass | 4.006 × 10²¹ kg · 6.71 × 10⁻⁴ M⊕ |
| Mean density | 2.02 g/cm³ |
| Surface gravity | 0.439 m/s² · 0.045 × Earth |
| Escape velocity | 0.828 km/s |
| Rotation period | 3.92 hours |
| Orbital radius | 43.1 AU (Sun) |
| Eccentricity | 0.196 |
| Orbital period | 283 years |