Charon is the "moon" of pluto but its more like a binary planetry system that orbits around the center of gravity. Quaor and this new one are not really planets in my mind but they do come in handy when explaining planetry formation. Its allways good to have other objects that have simmilar aspects to find out things in the universe. Earth has Venus and Mars, Jupiter and Saturn match, Neptune and Uranus (Urectum for any futurama fans ) and now that oddball pluto is getting a whole bunch of other oddball "planets" to be grouped with. In any event this is great news and can really help us in our concepts of planetary formation.