New Planet Shaped Body Found in Our Solar SystemPublication: National Geographic News Date: October 7, 2002 View Article
Astronomers announced today the discovery of the largest object in the solar system since Pluto was named the ninth planet in 1930. The object is half the size of Pluto, composed primarily of rock and ice, and circles the sun once every 288 years.
Named Quaoar (pronounced KWAH-o-ar), the object resides in the Kuiper belt, a region of the sky beyond the orbit of Pluto and about 4 billion miles (6.5 billion kilometers) from Earth. The Kuiper belt is chock full of remnants from the planet-formation era of the solar system.