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Titania


Titania is the fourteenth and largest of Uranus's satellites. 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'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.


Orbital Distance:   435,300 km - 437,200 km (average 436,300 km)
Eccentricity:       0.0022
Local Year:         8.706 days (8d 16h 56m 27s)
Orbital Velocity:   3.644 km/s
Inclination:        0.14°
Local Day:          8.706 days (8d 16h 56m 27s)
Axial Tilt:         n/a

Diameter:           1,578 km
Composition:        H2O ice and rock
Density:            1.72 g/cm3
Mass:               3.53 x 1018 tonnes (0.0006 earths)
Gravity:            0.039 G
Escape Velocity:    0.773 km/s
Area:               7.8 million km2
Surface Material:   H2O ice and rock
Atmosphere:         None
Pressure:           None
Albedo:             0.27
Temperature:        ???°C

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