Umbriel
Umbriel is a moon of the planet Uranus.
Facts About Umbriel:
- Umbrield is the 16th moon from Uranus.
- It is made mostly of ice and rock. It may have a rocky core and icy mantle.
- It is one of the darkest moons of Uranus.
- It is the second-most heavily cratered moon of uranus.
Classification: Moon (orbiting Uranus)
Names: Umbriel, Uranus II
Discovered: 1851 by William Lassell
Naming: Named after a character in Alexander Pope's poem The Rape of the Lock.
Diameter: 1169.4 km
Mass: 1.275e+21 kg
Semi-major axis: 266000
Orbital Period: 4.144 Earth days
Orbital Speed: 4.6700 km/s
Eccentricity: 0.00390000
Albedo: 0.2600
Volume: 837300000 km3
Density: 1.3900 g/cm3
Surface Area: 4296000 km2
Escape Velocity: 0.5200 km/s
Adjective: Umbrielian