I observed 2009 DD45 with a WAT-920H video camera and an 8" telescope. John Broughton later reduced astrometry from my videos using Astrometrica.

Download a 25 sec video of the flyby (2.7Mb)



Reported astrometric positions at MPEC: http://www.cfa.harvard.edu/mpec/K09/K09F01.html