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Anonymous
>>75316 Uh, 2003 UB 313 IS "Xena", fool. And Xena is just a nickname until they pick a real one. I've head the "Persephone" is currently the front-runner.
Anyways, this is just a PROPOSED definition, which will be voted on next week. The definition of a planet will be (if it passes): an object that a) orbits a star, and is not a star itself, and b) is of sufficient mass to have formed itself into a sphere.
All the current planets except pluto will be considered "classical" planets, whereas Pluto, Charon, Ceres, and "Xena" will be called "plutons", in that the take over 200 years to orbit the sun, and are very small. There will be probably be a couple hundred plutons in our discovered in our solar system sooner or later.
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