I think the criteria are more along the lines of "gravitationally dominate its orbit", which due to the perturbations of KBOs this object would do. Otherwise, b

I think the criteria are more along the lines of "gravitationally dominate its orbit", which due to the perturbations of KBOs this object would do. Otherwise, basically all planets would be demoted (e.g. Neptune has not cleared its orbit because Pluto is there, Jupiter hasn't because of the Trojans, etc.)