Oberon
/ˈəʊbərən/- Astronomy a satellite of Uranus, the furthest from the planet, which has a heavily cratered surface and was discovered by W. Herschel in 1787 (diameter 1,550 km)【天文】天（王）卫四。
词源
from the name of the king of the fairies in Shakespeare's A Midsummer Night's Dream.