Umbriel (/ ˈʌmbriəl /) is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character …

Nov 3, 2024 · Umbriel is the darkest of Uranus' largest moons. It reflects only 16 percent of the light that strikes its surface, a feature similar to the highland areas of Earth's Moon.

Umbriel, the third nearest and darkest of Uranus's five major moons, in an image made by Voyager 2 on Jan. 24, 1986. Umbriel is also the most heavily and uniformly cratered of the …

Umbriel is the third-largest moon of Uranus. It was discovered on October 24, 1851, by William Lassell at the same time as neighboring moon Ariel. It was named after a character in …

Umbriel, one of Uranus's five major moons, is a celestial body shrouded in mystery. Discovered by Otto Struve on October 8th, 1847, this enigmatic satellite remains largely unexplored, its …

Dec 13, 2025 · Umbriel is a moon that orbits the planet Uranus and has a surface area of 4,296,116.52 and semi-major axis of 266.

Apr 27, 2019 · Umbriel is the darkest (and third largest) of the five spherical moons of Uranus and one of the 19 spherical moons in the solar system. Like other moons of Uranus, Umbriel was …

Umbriel [UM-bree-ul] is the thirteenth of Uranus' moons and the third largest. It was named after the dusky, melancholy sprite from Alexander Pope's The Rape of the Lock.

Umbriel consists mainly of ice with a substantial fraction of rock, and may be differentiated into a rocky core and an icy mantle. The surface is the darkest among Uranian moons, and appears …

Umbriel is defined as one of the medium-sized satellites of Uranus, characterized by a heavily cratered surface indicating its old age, a relatively high density suggesting a larger fraction of …