Moon
Ariel
The brightest moon of Uranus, with the geologically youngest surface.
| Type | Moon |
|---|---|
| Parent body | Uranus |
| Radius | 579 km · 0.0909 R⊕ |
| Mass | 1.251 × 10²¹ kg · 2.09 × 10⁻⁴ M⊕ |
| Mean density | 1.54 g/cm³ |
| Surface gravity | 0.249 m/s² · 0.025 × Earth |
| Escape velocity | 0.537 km/s |
| Rotation period | Tidally locked (always shows the same face) |
| Orbital radius | 190,900 km (Uranus) |
| Eccentricity | 0.001 |
| Orbital period | 2.52 days |