major moon · moon of Uranus
Titania
The largest moon of Uranus, an icy world split by huge fault canyons, named after the fairy queen of A Midsummer Night's Dream.
- Distance from Earth today
- 2.77 billion km18.53 AU · light: 2 h 34 min
- Distance from the Sun today
- 2.91 billion km19.43 AU
- As of
- 2 November 2026position from NASA/JPL orbital elements
Where it is today
Top view of the plane of Earth’s orbit, compressed distance scale. Open on the big map with the time slider →
Facts
- Diameter
- 1,578 km
- Mass
- 3,400 × 10¹⁸ kg
- Density
- 1,653 kg/m³
- Mean distance from the planet
- 436,298 km
- Orbital period
- 8.71 days
- Orbital eccentricity
- 0.0020
- Orbital inclination
- 0.1°
Source of the figures: JPL SSD – Planetary Satellites (public domain).
Discovery: 1787 – William Herschel
Description
Titania is the largest of Uranus's moons, discovered by William Herschel in 1787 along with Oberon, six years after he found Uranus itself. It is named after the queen of the fairies in Shakespeare's A Midsummer Night's Dream. Its surface of ice and rock is marked by impact craters and by enormous fault valleys, such as Messina Chasma, that suggest the crust once stretched as the interior froze and expanded. Some researchers think a thin layer of liquid water might still survive deep inside. Voyager 2 imaged it during its 1986 flyby.