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Titania(tĭtā`nēə), in astronomy, largest of the known moons, or natural satellites, of UranusUranus
, in astronomy, 7th planet from the sun, at a mean distance of 1.78 billion mi (2.87 billion km), with an orbit lying between those of Saturn and Neptune; its period of revolution is slightly more than 84 years.
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Titania(ti-tah -nee-ă) The largest satellite of Uranus, discovered in 1787 by William Herschel. Photographed by Voyager 2 in 1986, its icy surface shows many small craters, a few large impact basins, such as Gertrude, which is more than 200 km in diameter, and an extensive network of faults up to 5 km deep, such as the Messina Chasma, which runs up to 1500 km. See also Uranus' satellites; Table 2, backmatter.
a satellite of the plant Uranus. Titania has a diameter of about 1,800 km and is at a mean distance of approximately 439,000 km from the center of Uranus. It was discovered in 1787 by W. Herschel. Titania’s orbital plane is nearly perpendicular to that of Uranus. (SeeSATELLITE.)