Although the peculiar orbits of all three could shed fresh light on the earliest epochs of the solar system's formation, the astronomers now concede that maybe it's best not to think of them as planets at all.
"Santa is crazy, and it's my favorite -- by far the weirdest of the three," Brown said. It is significantly larger than Pluto, it's shaped like a huge cigar, and it rotates end-over-end every four hours; it also has a single tiny moon about 60 miles in diameter orbiting around it.
(Via The Anomalist.)
Good lord -- they've found the mothership!