Puck was discovered December 1985 in images sent back by the Voyager 2 spacecraft during its flyby of Uranus.
Puck is one of the small inner moons of Uranus. With a diameter of about 150 km (about 90 miles), Puck is the largest of Uranus' known lesser satellites. Puck orbits Uranus in less than one Earth day.
Originally designated S/1985 U1, Puck is named for a mischievous sprite in William Shakespeare's "A Midsummer Night's Dream."