Titania

The largest moon of Uranus — crossed by enormous canyons and possibly hosting a subsurface ocean.

Orbits Uranus

Largest Uranian moon; eighth-largest moon in the Solar System.
Messina Chasmata u2014 1,500 km canyon system.
2022 JWST + ground-based spectroscopy suggests possible subsurface ocean.

About Titania

Titania is the largest moon of Uranus, about half the diameter of Earth’s Moon, and the eighth-largest moon in the Solar System. Its surface shows a mixture of impact craters and tectonic features, including the enormous Messina Chasmata canyon system stretching 1,500 km. Spectroscopic observations from JWST and ground-based telescopes in 2022-2023 detected water ice, CO₂ ice and possibly ammonia compounds consistent with a subsurface ocean interacting with the ice shell.

Live · 3DSee Titania in the Live 3D Solar SystemFly to Titania and explore its orbit among the planets, moons & spacecraft in a full-screen interactive view.Launch 3D view

Physical Properties

Mean radius788 km

Mass3.4e21 kg

Density1.711 g/cm³

Surface gravity0.367 m/s²

Rotation period208.94 h

Bond albedo0.35

Mean temp70 K

Orbit

OrbitsUranus

Semi-major axis436,300 km

Eccentricity0.0011

Inclination0.34°

Orbital period8.706 d

Gallery

Hand-picked mission imagery of Titania sourced from NASA and partner archives. Click any photo for full resolution and source attribution.

Titania, the largest moon of Uranus, from Voyager 2. NASA/JPL-Caltech · Public Domain u2014 NASA Media Usage Guidelines

Voyager 2 view of the Uranian moon Titania. NASA/JPL-Caltech

Imagery on this page is provided by the original mission teams. Full attribution terms: Image Rights & Credits.

Sources & Further Reading

Numerical values (radius, mass, orbital elements, temperatures) are drawn from NASA NSSDC Planetary Fact Sheets, JPL Horizons, and the JPL Small-Body Database. Last refreshed: 2026-06-08 01:37:02.