Umbriel
CategoryMoon of Uranus
SystemSolar System
Diameter1169 km
Orbital Period4.14 days
About Umbriel
The darkest of the large moons of Uranus, reflecting only about 16 percent of light. Its surface is ancient and heavily cratered. Features Wunda, a mysterious bright ring of material 131 km wide near its equator. Discovered by William Lassell in 1851. The third largest moon of Uranus. Named after a dark sprite in an Alexander Pope poem.
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