Planet X?

Mike Brown has done it again another large Kuiper Belt Object, apparently larger than Pluto!

Too little info to know what to think: this will of course re-open the "is Pluto a Real Planet" kerfuffle.
I wish people would just accept that astronomy is phenomenological, prone to classification manias, and often misguided in doing so - so we end up with inconsistent classes. BFD.

The other puzzle is WTF was going on in the outer system - that is shaping up to be a weird mass function and a weird distribution function. Somthing to think about.