Dwarf planet

A dwarf planet is a celestial body orbiting a star that is massive enough to be rounded by its own gravity but has not cleared its neighboring region of planetismals and is not a satellite. More explicitly, it has to have sufficient mass to overcome its compressive strength and achieve hydrostatic equilibrium.What is a dwarf planet? Why is Pluto considered a dwarf planet now as opposed to a planet? - zqas.net
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