@ Rosemaryr

Awww  gee whiz,  only 1 in 25.   Near misses aren't any fun to render.  

I actually hope it misses.  I would be concerned about any rock that may be dislodged and launched in an eventual earthbound direction.  But then again a near miss may sling shot it into a worse direction also.  Could be a bummer either way. 

I guarantee  the numbers are already being crunched for that possibility.