Dont look up

You are a scientist (an astronomer to be exact) and you have discovered a comet that came from the oort cloud (the outer reigon of the solar system with huge asteroids orbiting very far) but as you calculated the comets orbit you realized a problem....the asteroid is heading towards earth and will hit 100% and the other problem is that the asteroid is 10 kilometers in diameter (about the size of the asteroid that killed the dinosaurs) and it will hit in 6 months and 14 days ....what will you do? (oh and also you meet her right after saying the news to the president)