User:Iridia/Sandbox



The Moon is a a quarter the diameter of the Earth and 1/81 its mass, making it the largest moon in the solar system relative to the size of its planet (although Charon is larger relative to the dwarf planet Pluto).

However, the Earth and Moon are still considered a planet–satellite system, rather than a double-planet system, as their barycentre, the common centre of mass, is located 1,700 km (about a quarter of the Earth's radius) beneath the surface of the Earth.

The Moon's surface area is less than one-tenth that of the Earth; about a quarter of the Earth's land area.