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To: goldworldnet who wrote (254082)	6/12/2008 2:45:50 PM
From: TimF	Read Replies (2) \| Respond to of 793928

"So Pluto is a Kuiper belt object, a plutino (the unofficial but nearly universally accepted name for objects in the 2:3 resonance with Neptune), a dwarf planet, and now also a plutoid?" he said. "If the IAU is trying to make things more clear, I think it needs to try again. This is just another layer of confusion that will feed the "pluto is a planet" camp at the [Johns Hopkings] meeting." Kortenkamp also thinks the new defiinition leaves Ceres up in the air: "And this "-oid" classification doesn't apply to Ceres?" he asks. "Okay, so does that means we continue calling Ceres an ASTERoid?" I believe that both "plutoids" and large "asteroids/planetoids" are "dwarf planets". So Pluto is 1 - a dwarf planet 2 - a plutoid (any object trans neputian object that's also a dwarf planet is a plutoid) 3 - a plutino 4 - a Kuiper belt objects 5 - a planetoid (which traditionally meant the same as an asteroid, but includes any object that orbits the sun that isn't a planet or a comet) 6 - a minor planet (pretty much the same as the more expansive defition of planetoid, it includes both "dwarf planets", and "small solar system bodys" 7 - a "trans-Neptunian object" (orbits beyond Neptune, this group includes, in order from closet to furthers, Kuiper belt objects, scattered disk objects, and Oort Cloud objects) While Ceres is 1 - an asteroid 2 - a main belt astroid 2 - a planetoid 3 - a dwarf planet 10 Hygiea (the forth biggest object in the asteroid belt) 1 - an asteroid 2 - a main belt astroid 3 - a plantoid 4 - a small solar system body 90377 Sedna (the furthest known dwarf planet candidate) 1 - a planetoid 2 - a "dwarf planet candidate" (it can be argued if it should be called a dwarf planet or a small solar system body) 3 - a "trans-Neptunian object" 4 - an Oort cloud object Eris (the largest known dwarf planet, its bigger than Pluto) 1 - a dwarf planet 2 - a planetoid 3 - a trans-Neputnian object 4 - a "scattered disk object" 5 - a plutoid