1.isotelus wrote:1. Haumea and it's satellites, Hi'aka and Namaka 2. d 3. did not clear it's orbit
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3. Correct but I would probably add put that several similar size objects in the Kuiper belt, such as Eris which is 27% more massive than Pluto were discovered. This led the IAU to define the term "planet" formally in 2006. The new definition excluded Pluto and reclassified it as a dwarf planet.
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