Oberon (moon) the best images of this moon have spatial resolution of about 6 km. The images cover about 40% of the surface, but only 25% of the surface was imaged with a resolution that allows geological mapping. At the time of the flyby the southern hemisphere of Oberon was pointed towards the Sun, so the dark northern hemisphere could not be studied. No other spacecraft has ever visited the Uranian system. Oberon (moon) Oberon, also designated , is the outermost major moon of the planet Uranus. It is the second-largest and second most massive of the Uranian moons, and the ninth
Dysnomia (moon) pronounces the same as his wife's nickname, Di. Because of this, Brown pronounces the full name , with a long "y". Dysnomia serves as the extraterrestrial origin of the alien antagonist in the independent horror/comedy short film, "Skinhead Junkies From Dysnomia". Dysnomia (moon) Dysnomia (Greek: "Δυσνομία")—officially (136199) Eris I Dysnomia—is the only known moon of the dwarf planet Eris (the most massive known dwarf planet in the Solar System). It was discovered in 2005 by Mike Brown and the laser guide star adaptive optics team at the W. M. Keck Observatory, and carried the provisional designation of until officially named