# Ariel

Ariel (Uranus I) is a moon of Uranus, discovered by William Lassell in 1851. It orbits Uranus every 2.5 days and shines at about magnitude 14.3.

The brightest-surfaced of Uranus's moons, but close in: steady air and high power help.

Open AstroPilot to see where Ariel is next to Uranus tonight and how easy it is with your telescope. https://astropilot.space/object/ariel