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A dwarf planet is a category of celestial bodies in the solar system defined in a resolution passed by the International Astronomical Union (IAU) on August 24, 2006. The definition currently applies only to the Sun's solar system. It applies only to the English language, and terminology may differ in other languages. In the usage approved by the IAU, the category "dwarf planet" is distinct from that of "planet" and also from another new category, "Small Solar System Body".