Board Thread:Off Topic/@comment-24694044-20150212193625/@comment-27007772-20150324174711

This may actually be false.

The only reason Pluto and Ceres are not seen as full Planets is the "clear your orbit" rule, where asteroids and other objects of large mass can not exist in the orbit of the sun the planetoid follows. But- according to our coordination of the rule; Jupiter and Earth aren't planets because both of them have trojan asteroids at their L4 and L5 Lagrange points. The deffinition of "clearing your orbit" may be made into foreign proto-planets, moons, and etcetera by the end of the year, making both Pluto and Ceres planets.

As of now, the solar system has technically 6 planets, and we aren't included.