Moon of Uranus
Diameter: 1523 km
Distance: 583500 km (mean)
Period: 13.463 days
Eccentricity: 0.0014
Inclination: 0.058°
Magnitude: 13.7

Discovered in 1787 by W. Herschel, Oberon is the second largest moon of Uranus with a heavily cratered surface. Oberon is composed of roughly half ice and half rock and has at least one large mountain that rises about 6 km off the surface.