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Solar System/Dwarf planets
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
A dwarf planet is an object that is massive enough to be made spherical by its own gravity but has not cleared its neighboring region of planetesimals and is not a satellite. There are currently five recognized dwarf planets:
Solar System/Ceres
Solar System/Pluto
Solar System/Eris
Solar System/Makemake
Solar System/Haumea