re: Why not call it a "Kuiper Belt Planet"? Hmm, KBO or...
2003 UB 313 = EKBO (Edgeworth-Kuiper Belt Object). I like the sound of 'Edgeworth'. :)
Sedna = OCO (Oort Cloud Object)
Honestly, I think we should keep in mind of what these spherical bodies are made of and so far, they seem to be pretty icy (as in not gaseous or rocky).
