Uranus is the seventh planet from the Sun and is the third largest in the solar system. It was discovered by William Herschel in 1781. It has an equatorial diameter of 51,800 kilometers (32,190 miles) and orbits the Sun once every 84.01 Earth years. It has a mean distance from the Sun of 2.87 billion kilometers (1.78 billion miles). The length of a day on Uranus is 17 hours 14 minutes. Uranus has at least 21 moons. The two largest moons, Titania and Oberon, were discovered by William Herschel in 1787.

Uranus Family
This montage of images of the Uranian system was prepared from an assemblage of images taken by the Voyager 2 spacecraft during its Uranus encounter in January 1986. This artist's view shows Ariel in the forefront, Uranus rising behind, Umbriel off to the left, Miranda in the foreground to the right, Titania fading in the distance at the far right, and Oberon in its distant orbit at the top.

From www.solarviews.com

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