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Titania Moon | Largest Moon of Uranus

titania moon

Titania Moon is the largest moon of the Uranus Planet. The Titania is the eighth-largest moon in our solar system. The diameter of this moon is around 1577 km (980 miles). According to size, Titania Moon is less than half of our earth’s moon (diameter : 2159 miles). 

Planet Uranus has 27 moons but Titania is the biggest. In 27 moons of Uranus: 5 are major moons, 13 inner moons, and 9 are irregular moons. The largest moon titania comes in the group of major moons. British astronomer ‘Frederick William Herschel‘ discovered the moon titania in March 1787. The orbit of this moon exists in the magnetosphere of Uranus. 

Must Read:- Total Number of Moons in the Solar System

Must Read:- Uranus Moons: Names, Numbers, and List

Titania Moon Facts


In the March of 1781, astronomer Frederick William Herschel discovered the planet Uranus. He discovered Uranus with his own made of telescope. After six years later, he discovered Moon Titania in January of 1787. He called it Uranus I

Size and Mass

Titania is the most massive and largest satellite of Uranus. The diameter of the Titania (Uranus I) Satellite is around 1577 km. Whereas the mass of this moon is 3.4 × 1021 kilograms with an average density of around 1.71 gm/cm3.

Impact Craters

Titania has many extremely large impact craters. According to size, these craters are larger than 22 moons of Uranus except for 5 major moons (Ariel, Umbriel, Miranda, Titania, and Oberon). The size of these impact craters is up to 325 kilometers (202 miles). But the Oberon satellite has even larger craters than Titania. 


Uranus moon Titania probably consists of the rocky core and icy mantle. The Titania satellite may also have liquid water present at the boundary of the rocky core and icy mantle. This moon may have the approximately same amount of rock and ice. 


The orbital distance of the Titania from Uranus is around 436,000 kilometers (271,000 miles). That makes this satellite 2nd farthest major moon of Uranus. Whereas the farthest major satellite of Uranus is Oberon.  

One day and one year

Titania completes one rotation around Uranus in 8.7 days. And it is a tidally locked satellite that means always face one side towards the planet Uranus. Hence one day and one year on this moon are the same. 

Read about:- How Long is a Day and Year on each Planet


According to a study conducted in 2001-2005, there may be water ice and frozen carbon dioxide present on the surface of Titania. Also, it may have a tenuous atmosphere of carbon dioxide with a very low pressure of around 10 -13 bar. 


In 1986 spacecraft Voyager 2 have pass by the Uranus system and took several images of Titania and other moons of Uranus. And that was the closest spacecraft visited the Uranus system so far. 

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