Uranus, seen by Voyager 2. Image credit: NASA/JPL

Radius of Uranus

Article Updated: 24 Dec , 2015


The radius of Uranus is 25,559 km, from the center of the planet to the equator.

Uranus, like the other planets in the Solar System, is rapidly spinning on its axis; it completes one rotation every 17 hours and 14 minutes. Because of this rotation, the planet is flattened out, so that its equator is further away from the center than the poles. Just for comparison, the polar radius of Uranus is 24,973 km.

And so, if you subtract the two equators, you get a difference of 586 km. In other words, points on the equator are 586 km further away from the center of the planet than points at the poles of Uranus.

We have written many stories about Uranus on Universe Today. Here’s an article about new rings and moons discovered around Uranus. And here’s one about how Uranus can actually get pretty stormy.

If you’d like more info on Uranus, check out Hubblesite’s News Releases about Uranus. And here’s a link to the NASA’s Solar System Exploration Guide to Uranus.

We have recorded an episode of Astronomy Cast just about Uranus. You can access it here: Episode 62: Uranus.

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