You can find information about the new "Dwarf Planets" and asteroids on the Asteroids Web page (link below) as well as in many Monthly Lunar Planners.
This includes information on:
The Primary Asteroids: Juno, Pallas, Ceres and Vesta
The Centaurs: Chiron, Pholus and Nessus
And those beyond Neptune, in the Kuiper Belt - including Eris, Quaoar, Ixion, Varuna, and Orcus