No, the August 24th 2006 the IAU defined officially only 8 major planets :
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
and 4 minor planets :
Ceres, Pluto, Charon and "2003 UB313" (First called Xena and finally Eris ?)
Quid of Sedna, "2005FY9", Orcus, Quaoar etc...?
