15 December 2005

Stone cold circular

Buffy” is the informal name of 2004XR190, a new rock (with “a diameter of between 500 and 1000 kilometres, making it somewhere between a fifth and nearly half as wide as Pluto”) buzzing around in a circular but highly inclined (47°) orbit beyond Pluto (just under 60A, but it comes in as close as 50AU).

The circular-but-inclined orbit is already giving the theorists conniptions, but I wonder if it will have moons?


M said...

who on earth names these things??

Leon Brooks said...

Well... there's a presumption in that question which may not quite be valid... (-: