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Uranus-sycorax2.gif(500 × 150 pixels, file size: 173 KB, MIME type: image/gif, looped, 3 frames, 1.5 s)


English: Where did these two irregular moons of Uranus originate? Last week two previously undiscovered moons of the distant gas planet were confirmed, the first in irregular orbits. All fifteen previously known moons of Uranus are 'regular', circling near the planet's equator. Most of these were discovered by the passing Voyager 2 spacecraft in 1986. These newly discovered moons are thought to be odd-shaped and about 100 km across. They are considered irregular, though, because they orbit in odd directions and far from Uranus. If Uranus' irregular moons have the same origin as those orbiting Jupiter, Saturn, and Neptune, then they were probably caught from orbits around the Sun. Moons like this are discovered by their motion. One of these moons is shown above as the circled point of light moving from left to right. (To stop the movie from repeating, click "stop" on most browsers.)
Author Brett J. Gladman/Palomar Observatory


Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current00:34, 15 July 2020Thumbnail for version as of 00:34, 15 July 2020500 × 150 (173 KB)Nrco0eUploaded a work by Brett J. Gladman/Palomar Observatory from <br>derived from with UploadWizard
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