Even if it were to hit us, it's utterly pointless to even inform us about it, unless they want to general populating to go into a panic. Add to the fact that for a fairly large asteroid we'd something akin to an inter-planetary missile (non-existent as far as I know). So if it does infact come any day I invite you all to a nice game of poker and some drink so that we may spend the last hours of our lives in entertainment.