Ariel (moon)

Ariel is a moon of Uranus discovered in 1851 by William Lassell. Its composition is roughly 50% water ice, 30% silicate rock, and 20% methane ice, and it appears to have regions of fresh frost in places. Largely devoid of impact craters, Ariel appears to have undergone a period of intense geological activity that has produced a huge network of fault canyons and liquid water outflows over its surface.

Data for Ariel:

• Diameter: 1160 km
• Surface Area: 4,200,000 km²
• Orbital radius: 190,900 km
• Orbital period: 2.52 days
• Rotational period: 2.52 days