So it has been confirmed that our Solar system has a 10th planet which is larger than Pluto and nearly three times farther from the Sun as Pluto is.
The new planet, temporarily designated 2003 UB313, is the most distant object yet seen in the solar system, 97 times farther from the Sun than the Earth is. It also is the largest body yet found orbiting in the Kuiper belt, the group of icy bodies including Pluto which orbit beyond Neptune.
Like Pluto, it is covered by methane ice, and at its present distance is chilled to just 30