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Yup, and if we do manage to prove it's existence we should keep the name "Planet 9".

And pretty please let the math on the star collision in 2022 be correct. I really want to see that.

Formerly known as Planet X, before the Pluto demotion kerfuffle.

But Plan 9, er Planet, is good, too.

Nah, let's call it something fun like Nibiru or Nemesis.