Eris

Eris is a dwarf planet that lies at the outer reaches of our solar system. It was discovered in 2005 by professional astronomers who were examining images taken at California's Palomar Observatory two years previously.

Quick Facts
Distance from Sun: 6.3 billion miles/10.12 billion km/97 AU

Diameter: 1,500 miles/2,400 km

Atmosphere: Methane surface

Moons: 1

Rings: No