Stephano
Stephano (Natural satellite). See its size, orbit and live position on a 3D map of the Solar System. Stephano, also known as Uranus XX and previously as S/1999 U 2, is an irregular moon of Uranus.
Stephano, also known as Uranus XX and previously as S/1999 U 2, is an irregular moon of Uranus. It was discovered on 18 July 1999 by Brett J. Gladman et al. and it was named after the drunken butler in William Shakespeare's play The Tempest. Stephano orbits Uranus at an average distance of about 8 million km (5.0 million mi) and takes about 677 Earth days to complete one orbit. It is a member of the Caliban group, the first identified group of irregular Uranian moons that share similar orbital characteristics. Stephano is estimated to have a diameter of 32 km (20 mi), though most of its physical properties are unknown.
- Type: Natural satellite
- Orbiting: Uranus
- Orbital period: 677.0 days