I wonder why the comments to Phil's post today are turned off? I wanted to ask why the path of the occultation runs south to north, according to the map shown in the Sky & Telescope article: http://www.skyandtelescope.com/obser.../89690067.html
It will move a couple thousand miles north-northeast in about an hour. I'd expect that the asteroid is moving more-or-less parallel to the ecliptic, thus the "shadow" would move east-west or west-east (I can't figure out whether the orbiting of the asteroid or the rotation of the earth would govern). Is the northward movement just due to the tilt of the earth's axis?
Also it's interesting that they want to collect observations to delineate the shape of the asteroid's "shadow". How many would you need to be able to make an animation of the shadow moving across the planet's surface? I hope someone's planning to do that.