The moons of Uranus are divided into three main groups:
- Inner Moons: These are the moons that orbit closest to Uranus. They include Miranda, Ariel, Umbriel, Titania, and Oberon. These moons are all prograde and have orbits that are nearly circular.
- Outer Moons: These are the moons that orbit farthest from Uranus. They include Caliban, Sycorax, Prospero, Setebos, and Stephano. These moons are all retrograde and have orbits that are highly eccentric (elongated).
- Irregular Moons: These are the moons that have orbits that are highly inclined to Uranus' equator. They include Puck, Mab, Cupid, and Ferdinand. These moons are all thought to be captured objects that were not formed with Uranus.
The moons of Uranus are believed to have formed from a disk of gas and dust that surrounded the planet early in its history. This disk is thought to have been created by the collision of Uranus with another protoplanet. The moons formed as the gas and dust in the disk condensed into solid particles.
The moons of Uranus play an important role in the planet's dynamics. They help to stabilize Uranus' rotation and they also create a magnetic field around the planet. The moons are also a source of water and other volatiles that may have contributed to the formation of life on Uranus.
