Adding a Dimension to the Definition

The possible new tenth planet has been accessorized. It has now been given a name and a moon has now been discovered orbiting around it. Michael Brown of the California Institute of Technology has temporarily nicknamed the "planet" "Xena", after the warrior princess of that name, and he dubbed its moon "Gabrielle", after the warrior princess' sidekick. The speed at which the satellite circles Xena will aid astronomers in their calculations of Xena's mass. The discovery of a moon may give more credibility to its possible status as a planet, but having a moon is still no qualifier for being a planet, and so the planetary definition debate continues.