Tenth planet?

http://news.bbc.co.uk/1/hi/sci/tech/4667100.stm

An icy, rocky world reported last year to be orbiting the Sun in the distant
reaches of the Solar System really is bigger than Pluto, scientists say.

New observations of the object, which goes by the designation 2003 UB313, show
it to have a diameter of some 3,000km - about 700km more than Pluto.

The measurement was undertaken by a German team using a telescope in Spain, and
is published in the journal Nature.

It is likely to bolster claims for the body to be given planet status.

On the other hand, it will also give support to those who believe Pluto has an
inflated position and should be downgraded to a more minor classification.