Jack C. Davis Observatory

Planetary Walkway: Uranus

The magnificent planet, Uranus, is dedicated to all my family and friends whenever they are pains in the butt, especially my charming children, Helaine, Claire, Ward, Rett, and Kirk. With love, of course.

Maizie Harris Jesse

Named after the Roman god of the Titans, Uranus has been revealed as a dynamic world with some of…
Named after the Roman god of the Titans, Uranus has been revealed as a dynamic world with some of the brightest clouds in the outer solar system.

Uranus was discovered by William Herschel in 1781. Uranus was the first planet discovered in over 2000 years and therefore was a huge event in the 18th century. Uranus is seventh planet from the Sun and more than 19 times further from the Sun than Earth (19.2 A.U.). At that distance it takes light almost 2.66 hours to get to Uranus from the Sun. Uranus is another of the Jovian planets and also has a ring system. Uranus is unique in the fact that it experienced a collision so massive that it was left ajar with an axial tilt of almost 98° that produces a retrograde rotation on its axis. A year on Uranus is equal to 84 Earth years and a day on Uranus is about 17.2 hours or about (- 0.72 Days)

Uranus was named after a Greco-Roman mythological god of the Titans. Although Uranus is far away it can be observed with the naked eye when sky conditions are excellent and can be observed easily with a small 6 inch telescope. Uranus has a featureless atmosphere with enough methane gas to absorb red light and reflect back to Earth a pale bluish color. Uranus has a ring system that was first discovered from Earth. Uranus has 27 known moons.

Quick Facts

  • Mean Distance from Sun: 2.871 bilion kilometers
  • Orbital Period: 83.75 years
  • Rotational Period: 17 hours 14 minutes (retrograde)
Photo Gallery
Uranus Images
Computer enhancement of a image taken by the Voyager 2 spacecraft.    
Computer enhancement of a image taken by the Voyager 2 spacecraft.    


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