Amazing Space- Fast Facts: Dwarf planet, Eris

Age	4.5 billion years, about the same age as the Sun
Location	Solar system, Kuiper belt region
Avg. distance from the Sun	10.2 × 10⁹ km (6.34 × 10⁹ mi), but Eris' orbit is so elongated during its trip around the Sun that it can be as far as 14.6 × 10⁹ km (9.07 X 10⁹ mi) and as near as 5.65 × 10⁹ km (3.51 × 10⁹ mi).
Diameter	Approximately 2,500 km (1,500 mi)
Mass	1.6 x 10²² kg
Orbital period around the Sun	557 Earth years (203,600 Earth days)
Number of moons	One, named Dysnomia
Distinguishing features	Eris, originally nicknamed Xena, is the largest known dwarf planet in the solar system. Its elongated orbit takes it far outside of the main region of the Kuiper belt.