Unfortunately in a worst case scenario this gets very political, if we do something about it in advance an impactor probe should do the job, if we decide to play the 1/50 odds and lose then the most effective short notice method is a nuke. Not a direct strike but a near detonation which vaporizes a section of the surface of the object with the outgoing plasma effectively functioning as a massive thruster. Actually doing this is not trivial but not hard either (from an engineering standpoint), the tricky part would be actually managing to launch it without every nation on earth that happens to have a beligerant leader saber rattling and stone walling the prospect of a launch until its too late even for a nuke to do any good.

politics has an ugly way of forcing itself into your life, if you don't already think about it.

Well, this administration has been forcing politics into NASA by cutting funding and making all female/POC/LGBT employees unsafe/invisible. It’d be lovely if NASA was free from politics, but as we saw from Trumps last appointment of the totally unqualified Bridenstone, politics is shoving its ugly dick into science.

Ok, whatever dude.

Ikr, I have a bunch of terms on my filter list but then its in the comments anyway