I guess they ran out of Latin and Greek gods and demigods naming all those asteroids or something. Still, one would hope for a major personality in classical mythology for something purporting to join the company of Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. If we've run out of anthropomorphic powers from the classical mythos, how about the deified qualities of a Roman numen? Like, say, Pax? Or, Libertas? For that matter, Ops hasn't been taken so far as I know. Among anthropomorphic types, there's Epimetheus. And Tithonus. And Minos. But XENA?
Take me to a vomitorium; gag me with a spoon.