ASTR 230 Lecture Notes - Lecture 7: Hubble Space Telescope, Johann Elert Bode, Ice Giant
1 Aug 2017
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Document Summary
Uranus is the seventh planet from the sun. While being visible to the naked eye, it was not recognised as a planet due to its dimness and slow orbit. Uranus became the first planet discovered with the use of a telescope. Uranus is tipped over on its side with an axial tilt of 98 degrees. It is often described as rolling around the sun on its side. The most important ones are miranda, titania, ariel, umbriel and oberon. Uranus was discovered by sir william herschel in 1781. It is too dim to have been seen by the ancients. At first herschel thought it was a comet, but several years later it was confirmed as a planet. Herschel tried to have his discovery named georgian sidus after king george iii. The name uranus was suggested by astronomer johann bode. The name comes from the ancient greek deity ouranos. Uranus rotates on its axis every 17 hours.
