The images were obtained on July 19 UT at the 0.4m Whately Observatory using the NICMASS infrared camera. Four impact sites are visible in the 2.23 - 2.29 µm image taken at 00:43UT (shown individually with a color stretch in the left image above). From east (left) to west the sites are C, A, E/F, and H. Site "H" is just disappearing over the western limb. The planet rotated to carry the "H" site out of view in the subsequent images. The observers were Mike Skrutskie and Sven Aas from the University of Massachusetts.
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