Asteroid 2012 DA14 will pass by close to Earth. Very close. So close, in fact, that it's inside the orbit of the moon and even inside the orbit of geostationary satellites, as shown by this illustration:
What the figure doesn't show is the angle of its path relative to the orbital plane of the moon and the orbital plane of geostationary satellites. What is this angle? What is the risk that it hits either the moon, or a geostationary satellite?
I guess it's quite small, to quote Douglas Adams:
"Space," it says, "is big. Really big. You just won't believe how vastly, hugely, mindbogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space, listen..."
but I'd be interested in a slightly more quantitative analysis.
(Googling this event is quite amusing, with one source godlikepredictions claiming that Asteroid 2012 DA14 will pass earth within .09 AU, missing Earth, but what is located at 1 AU from Earth???? Our moon!!!!!! (SIC).