And Babies Make 16--Solar System Planets

That is, three newly discovered dwarf planets in the Kuiper Belt raise the minimum number of primary planets in our solar system (defining primary planets as objects in hydrostatic equilibrium that orbit the Sun directly as opposed to orbiting other planets plus counting dwarf planets as a subclass of planets) to 16.

Read more here: http://www.space.com/12536-3-dwarf-planets-discovered-kuiper-belt-pluto.html