Yeah, so this happened

http://m.cbsnews.com/storysynopsis.rbml?pageType=scitech&url=http://www.cbsnews.com/8301-205_162-57558567/asteroid-passes-inside-moons-orbit-buzzes-earth/&catid=57558567

While enjoying the Geminid meteor showers this big bugger nearly made the Mayans think they'd got their dates wrong.

And was it discovered only on Sunday?  Truthfully that is a wee bit close!