Patrick, I may be the only one who was confused about this but I've been thinking that 2004DW and Sedna were the same object. It was only when Chuck stated that Sedna's perihelion was about 850 AU that I realized my mistake. 2004DW has not been named yet (unofficially) and has an orbit very similar to Pluto's. http://www.gps.caltech.edu/~mbrown/sedna/ http://www.gps.caltech.edu/~chad/2004dw/ Dave