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by shkkmo 1830 days ago
> Is that so?

Yes, it is. The definition of "clearing an orbit" isn't precisely defined, but it doesn't have to be since there appears to be a large natural gap in how much orbit clearing an planet does vs. a dward planet.

> A large body that meets the other criteria for a planet but has not cleared its neighbourhood is classified as a dwarf planet. That includes Pluto, whose orbit intersects with Neptune's orbit and shares its orbital neighbourhood with many Kuiper belt objects. The IAU's definition does not attach specific numbers or equations to this term, but all IAU-recognised planets have cleared their neighbourhoods to a much greater extent (by orders of magnitude) than any dwarf planet or candidate for dwarf planet.[0]

[0] https://en.m.wikipedia.org/wiki/Clearing_the_neighbourhood