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In 1997, two new moons, the first with irregular, noncircular orbits, were discovered around Uranus. Caliban has a diameter of 37 mi (60 km) and orbits Uranus at an average distance of 4.5 million miles (7.2 million kilometers). Sycorax has a diameter of 74.5 mi (120 km) and a much more elliptical orbit than Caliban, bringing it as close as 3.7 million miles (6 million km) to the planet.

The Uranian Moons

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The First Ten Asteroids Discovered1

  • The First Ten Asteroids Discovered1

TrendingHere are the facts and trivia that people are buzzing about.

Did Birds Evolve from Dinosaurs?

The Twelve Dancing Princesses

Current Events This Week: January 2023

African Americans by the Numbers

Andersen’s Fairy Tales: Contents

The Celtic Twilight: A Teller of Tales

TrendingHere are the facts and trivia that people are buzzing about.

Did Birds Evolve from Dinosaurs?

The Twelve Dancing Princesses

Current Events This Week: January 2023

African Americans by the Numbers

Andersen’s Fairy Tales: Contents

The Celtic Twilight: A Teller of Tales

  • Did Birds Evolve from Dinosaurs?
  • The Twelve Dancing Princesses
  • Current Events This Week: January 2023
  • African Americans by the Numbers
  • Andersen’s Fairy Tales: Contents
  • The Celtic Twilight: A Teller of Tales