Perhaps they should called it Xena (more popular).
PLUTO is named after "Percival Lovell" and "Clyde Tombaugh".
The debate on the new planets:
http://www.space.com/scienceastronomy/050729_new_planet.html2003UB313 have unusual orbit:
From ABC.NET.AU:
However, Dr Brown conceded that the discovery would likely rekindle debate over the definition of a 'planet' and whether Pluto should still be regarded as one.
Dr Brown says the new object was detected in January by the Samuel Oschin Telescope at the Palomar Observatory near San Diego. He says the planet went undiscovered for so long because its orbit is tilted at a 45-degree angle to the orbital plane of the other planets. Dr Brown says the team has a name in mind for the planet but wants to formally propose it before releasing it to the public.
Officially, the new planet is known as 2003UB313, though the New York Times reports that astronomers have been calling it Xena, after the television character named for a Greek warrior princess. On his website, Dr Brown writes that the new planet is at least as large as Pluto.
"Usually when we find these we don't know their size for certain, only lower limits," he wrote.
"The lower limit to this object is the size of Pluto. This object is at least the size of Pluto and likely a bit larger."
