Umbriel
The darkest of Uranus's major moons with ancient, heavily cratered terrain.
About
Umbriel is the third-largest moon of Uranus and the darkest of the major Uranian moons. Its surface is ancient and heavily cratered, with a mysterious bright ring called Wunda crater near its equator.
Properties
Notable Facts
Umbriel is the darkest of the major Uranian moons
Wunda crater has a mysterious bright ring of material on its floor
Other Moons of Uranus
Miranda
The smallest major Uranian moon with an extremely varied and dramatic landscape.
471.6 km
Diameter
1.4 d
Orbit
1948
Discovered
Ariel
The brightest and possibly most geologically active of Uranus's major moons.
1,157.8 km
Diameter
2.5 d
Orbit
1851
Discovered
Titania
The largest moon of Uranus with evidence of past geological activity.
1,576.8 km
Diameter
8.7 d
Orbit
1787
Discovered
Oberon
The outermost and second-largest major moon of Uranus.
1,522.8 km
Diameter
13.5 d
Orbit
1787
Discovered