Titania size and scale context

Titania is Uranus' largest moon, about 1,600 kilometers across. Voyager 2 saw long fault valleys and other signs of crustal extension, showing that this gray icy moon was not simply a frozen, inactive sphere. Read its scale context, comparisons, and journey links on the canonical object page.

RheaLarge icy moon·1,528 km

TitaniaLarge icy moon·1,600 km

HaumeaDwarf planet·2,322 km

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Moons

Rhea

Rhea is Saturn's second-largest moon, a cold icy body with an old, heavily cratered surface. Cassini also detected an extremely thin oxygen and carbon dioxide exosphere around it, making this quiet-looking moon chemically more interesting than it first appears.

Scale fact1,528 kmdiameter

Object class: Large icy moon
Composition: Water ice and rock
Temperature: ~99 K surface
Estimated age: ~4.5 billion years
Host: Saturn

Moons

Titania

Scale fact1,600 kmdiameter

Object class: Large icy moon
Composition: Water ice and silicate rock
Estimated age: ~4.5 billion years
Host: Uranus

Dwarf planets

Haumea

Haumea is a dwarf planet in the Kuiper Belt with a noticeably stretched silhouette. Its rapid rotation makes it one of the most unusual large bodies in the outer Solar System, and it also has two moons and a ring. The odd system is likely the aftermath of a major collision early in Haumea’s history.

Scale fact2,322 kmmaximum extent

Object class: Dwarf planet
Mass: ~0.00067 Earth masses
Host: Sun
Estimated age: ~4.5 billion years
Composition: Rock and water ice