Astronomy Answers: From the Astronomical Dictionary

Astronomy Answers
From the Astronomical Dictionary

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A moon of 72 km diameter at about 69,900 km from the planet Uranus. The gravity at its surface is about 0.0013 times as strong as on Earth. The moon goes once around its planet in about 13.4 hours. The moon was discovered in 1986. Also called UXIII (Uranus thirteen). Its provisional designation was S/1986 U4.