This calls into question the business of Pluto not being a planet. It has several moons. I'd say that's evidence of 'clearing its orbit' somewhat. I can only imagine that moons come about because the host body of matter attracted bits of matter in its journey and some amount of it was attracted strongly enough to not merely slingshot by out into space but not strongly enough to strike the body's surface.

__________________
1986 300SDL, 362K
1984 300D, 138K