If it crashes into earth the impact would be equivalent to 65,000 atomic bombs, while the crater would be six miles wide and 2,000 ft deep.
But what happens if it Hits the Moon
A crater 6 miles wide on the moon? Given the biggest visible crater on the moon is 100 miles wide, and there are many more bigger that are only partially visible, six miles is nothing.
An asteroid causing a piddling six mile crater isn't exactly going to cannon the moon into the earth or anything.
Scaremongering: must try harder.