Umbriel

Also known as Uranus II, Umbriel (moon)

Mond des Uranus

AI overview

Umbriel is the third-largest moon of Uranus, discovered in 1851 and composed mainly of ice with rock, featuring a dark surface shaped largely by impacts. Scientists believe it may have experienced internal geological activity early in its history, as suggested by the presence of canyons on its surface alongside impact craters.

AI-generated from the Wikipedia summary — may contain errors.

Key facts

Planet.name: Umbriel
Planet.mpc_name: Uranus II
Planet.adjectives: Umbrielian
Planet.image: PIA00040 Umbrielx2.47.jpg
Planet.image_alt: A round spherical body with its left half illuminated. The surface is dark and has a low contrast. There are only a few bright patches. The terminator is slightly to the right from the center and runs from the top to bottom. A large crater named Wunda with a bright ring on its floor can be seen at the top of the image near the terminator. A pair of large craters with bright central peaks can be seen along the terminator in the upper part of the body. The illuminated surface is covered by a large number of craters.
Planet.caption: Grayscale image of Umbriel from Voyager 2, January 1986. Umbriel's surface is heavily battered; the bright crater Wunda can be seen at the top of the image near the moon's equator
Planet.background: Thistle
Planet.discoverer: William Lassell
Planet.discovered: October 24, 1851
Planet.periapsis:  km
Planet.apoapsis:  km
Planet.avg_speed: 4.67 km/s (calculated)
Planet.inclination: (to Uranus's equator)
Planet.satellite_of: Uranus
Planet.mean_diameter: km
Planet.mean_radius: (0.092 Earths)
Planet.surface_area: (0.008 Earths)
Planet.volume: (0.0008 Earths)