What is the term for a celestial body that orbits a star, is spherical, and has cleared its neighborhood of other objects?
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Planet
This definition, adopted by the IAU in 2006, led to Pluto being reclassified as a 'dwarf planet' because it has not cleared its orbital path of other debris in the Kuiper Belt.
Also asked as:
- According to the IAU definition, what is a spherical celestial body that orbits the Sun and has cleared its orbital neighborhood?