They are in direct orbit around the sun, they have achieved hydrostatic equilibrium (are approximately spherical), but they have not managed to clear their area of other objects (the eight major anets have).
Dwarf planets are not a special type of planet. A small planet is later classified a dwarf planet. The only characteristic that makes it a dwarf planet is the size. Your question should be why are some planets small?
The dwarf planet Pluto.The dwarf planet Pluto.The dwarf planet Pluto.The dwarf planet Pluto.
Pluto the dwarf planet is an example of of a dwarf planet.
A dwarf planet it used to a be a planet
Mercury is not a dwarf planet. It is a planet.
dwarf is a dwarf planet because it is to small to be in the solar system.,
Its still a dwarf planet
Pluto is referred to as dwarf planet.
Ceres is a dwarf planet. There is no such thing as a gas dwarf planet - Yet!
Hiʻiaka is the larger, outer moon of the dwarf planet Haumea.It is NOT a dwarf planet.
Quaoar is an official dwarf planet.
Yes and no. It was decided on August 24, 2006 that Pluto be classified a dwarf planet. Because dwarf planets are a subclassification of planet, it would be accurate to call Pluto a planet, in a general setting (bearing in mind, though, that there are 10+ other dwarf planets in our solar system, some larger than Pluto).