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Om Oberon (moon)
High Quality Content by WIKIPEDIA articles! Oberon ( /EE oESbE(TM)rE'n/), also designated Uranus IV, 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 most massive moon in the Solar System. Discovered by William Herschel in 1787, Oberon is named after the mythical king of the fairies who appears as a character in Shakespeare's A Midsummer Night's Dream. Its orbit lies partially outside Uranus's magnetosphere.