Assuming out of my natural benevolence for all human beings that you an unenlightened soul seriously asking a question, and not just some blithering gasbrain of a troll, allow me to summon the Magical Fairy Of Common Sense to hit you over the back of the head with her Enchanted 2 by 4.

Something 4 times the size of Earth that was moving fast enough, or was close enough to Earth to pass it in less than a year would be as blindingly obvious in the sky as an elephant in your living room. Amateur astronomers routinely pick up objects at vast distance--comets, asteroids--that are no bigger than a few miles across.

If something like this were really out there, never mind the professional astronomers, tens of thousands of people would have spotted it from their backyard scopes, tracked it, traded information and photos (Let me guess: you haven't seen any amateur astronomical photos of Planet X, have you?), and plastered this stuff EVERYWHERE. Heck, Raoul would have had fifty shots of it on this board by now. Or are you one of those people who thinks ten thousand astronomers sitting on the find of the century would all decide to keep it a secret?

No such planet. No such thing. None. Everyone discussing its existence is as full of shit as a Christmas goose. No exceptions.

However, if you still want to believe it, let me know. I'll tell you where to send all your money and other assets before the world ends.

Regard to Barnacle Bill...