# How long is a year on Uranus?

A year on Uranus is equivalent to 84 Earth years, as it takes that long for Uranus to make one revolution around the sun. A day on Uranus is equivalent to about 17 Earth hours.

The third largest planet in the solar system, Uranus is about 31,690 miles in diameter and about 1.8 billion miles from the sun. Its rotational axis is severely tilted so that it rotates on its side. It is encircled by 11 faint, narrow rings made of rock and dust, and it has 27 moons.

British astronomer William Herschel discovered the planet in 1781. He named it Georgium Sidus in honor of Britain's King George III. German astronomer Johann Elert Bode later suggested the name change to Uranus, a reference to the ancient mythological god of the sky, Ouranos.

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Q&A Related to "How long is a year on Uranus?"
 Uranus is far from the sun, residing in the cold outer reaches of the solar system. It is a giant ball of gas, ice and liquid. According to Nasa.gov, scientists believe the surface http://www.ehow.com/facts_5796757_uranus-mostly-ma...
 Uranus is the greek god of the sky. He is cronus's father, and Zeus's grandfather. In roman mythology, cronus is Saturn nd i think Saturn is Zeus. Cronus = titan lord/ god/ etc. Zeus http://wiki.answers.com/Q/Who_is_Uranus
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 : its blue and it has 13 rings and 27 moons that orbit it. It is flat. http://wiki.answers.com/Q/What_is_the_surface_area...