Pluto was stripped of it's planethood back in August 2006 when the IAU stopped recognizing Pluto as a planet. Instead, it was given the drawrf planet recognition number of 134340. Pluto has now been granted a new title: plutoid, which is now the name used to describe the spherical celestial bodies in orbit around the sun farther away than our now last planet, Neptune. They used to be called "dwarf planets", a name that was implemented only 2 years ago. Talk about confusing the pants off the school kids!