Wikipedia includes the un-sourced qualifier "no other bodies of comparable size other than its satellites or those otherwise under its gravitational influence."

Wikipedia includes the un-sourced qualifier "no other bodies of comparable size other than its satellites or those otherwise under its gravitational influence." https://en.wikipedia.org/wiki/Clearing_the_neighbourhood https://en.wikipedia.org/wiki/Clearing_the_neighbourhood The "comparable size" is not part of the IAU definition, which just includes "(c) has cleared the neighbourhood around its orbit." http://www.iau.org/news/pressreleases/detail/iau0603/ http://www.iau.org/news/pressreleases/detail/iau0603/