Uranus

Uranus

Uranus was detected in 1781 by Sir William Herschel, who originally thought it was a comet. Uranus is the seventh planet in order of distance from the Sun at over 19AU. The period of revolution of Uranus is slightly more than 84 years with a diameter of 6,700km. The mass of Uranus is approximately 8.684 x 10²⁵kg. Uranus appears as a small greenish or bluish disk in Earth-based telescopes because methane in its atmosphere absorbs the other colours such as red. Uranus has five major moons: Miranda, Ariel, Umbriel, Titania and Oberon in order of their distance from the planet. [VH] {SR} {EP} {EB}