Oberon
The outermost and second-largest major moon of Uranus.
About
Oberon is the second-largest moon of Uranus and the outermost of the five major moons. Its surface is old, dark, and heavily cratered, with some craters showing dark material on their floors.
Properties
Notable Facts
Oberon is the most heavily cratered of the major Uranian moons
Some of its craters have dark material on their floors, possibly from cryovolcanism
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
Umbriel
The darkest of Uranus's major moons with ancient, heavily cratered terrain.
1,169.4 km
Diameter
4.1 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