Uranus (天王星; Star of the Heavens' King) is the seventh planet from the Sun in this Solar System. It has 27 moons, all named for literary characters from Shakespeare and Alexander Pope. It is grouped with Jupiter, Saturn, and Neptune as a planet of the outer Solar System.
In the Sailor Moon series, Uranus was protected by Sailor Uranus, even though in the present she resided on Earth with the other Sailor Senshi. During the time of the Silver Millennium, Sailor Uranus remained there alone.
In the manga and Sailor Moon Crystal, Miranda Castle orbited Uranus, and was the palace of Princess Uranus. The Sailor Crystal associated with her planet was the Uranus Crystal.
Uranus, also known as Caelus in the Roman pantheon, was a primordial sky god with varying origin stories in Greek mythology. Most of the other gods in the Greek pantheon were considered the descendants of Uranus and Gaia, the goddess of elemental earth. Uranus loathed the children she bore, though, and she finally helped her son Cronus, also known as Saturn in the Roman pantheon, to overthrow him as leader of the gods.
Uranus is associated with disrupting established traditions, individuality, intuition, reform, and electricity. It is often associated with the planet Saturn.