Uranus’ Moon Umbriel

Uranus’ moon Umbriel — Umbriel is a moon of Uranus discovered in 1851 by William Lassell. It was named after the ‘dusky melancholy sprite’ in Alexander Pope’s The Rape of the Lock.

Umbriel’s surface is the darkest of the Uranian moons, and it is also the least geologically active.

It is mostly composed of water ice, with the balance made up of silicate rock and methane ice. Most of its methane ice is on its surface.



Discovered by William Lassell
Discovered in 1851

Orbital characteristics

Orbital radius: 266,000 km
Rotation period: 4.14 days
Orbital period: 4.14 days

Physical characteristics

Diameter: 1190 km
Surface Area: 4,300,000 km2



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