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Orbit: 436,270 km from Uranus
Orbital period: 209 hours
Gravity: 0.367 m/s²
Circumference: 4,957 km
Diameter: 1578 km
Mass: 3.49e21 kg
Titania is the largest of the moons of Uranus and the eighth largest moon in the Solar System at a diameter of 1,578 km.

Discovered by Herschel in 1787.

Titania and Ariel appear quite similar though Ariel is 25% smaller.  All of Uranus’ large moons are a mixture of about 40-50% water ice with the rest rock, a somewhat larger fraction of rock than  Saturn’s large moons such as  Rhea.

Titania is the largest of the moons of Uranus


Titania’s surface is a mixture of cratered terrain and systems  of  interconnected valleys hundreds of kilometers long. Some  of the craters appear to be half-submerged.  Titania’s surface is  clearly relatively young   (though older  than some such as Enceladus); obviously some sort  of resurfacing processes have been at work.

One theory of Titania’s history is that it was  once hot enough to be liquid. The surface probably cooled first; when the interior froze it  expanded forcing the surface  to crack and resulting in the valleys that we  see today.



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