How many leganderies can you get in Pokemon Pearl?

You an get 14 legendaries: Rotom, Uxie, Mespirit, Azelf, Palkia, Heatran, Regigas, Giratina, Cresselia, Manaphy (through Pokemon Ranger), Phione (through breeding with Manaphy and Ditto), Darkrai (through Mystery Gift), Shaymin (through Live Events), and Arceus (through Live Events). From: Austin the Pokemon Master