Well, the World Trade Center is nothing but rubble, so I guess there is nothing to worry about!
It’s the Dr Who Christmas special, no worries.
Earth’s orbit is 584 million miles around the sun.
It’s diameter is about 8000 miles.
8000/584,000,000 is kinda small.
Only one in 73,000 chance that the earth will actually BE where the asteroid passes thru the ‘orbit’.
Go back to sleep; this is just math.