Did you know that the Deep Impact Flyby Spacecraft has a new assignment? The EPOXI mission combines two exciting science investigations in an entirely new mission that re-uses the Deep Impact spacecraft. The Extrasolar Planet Observation and Characterization (EPOCh) investigation will observe stars that have known transiting giant planets. The Deep Impact Extended Investigation (DIXI) of comets observes comet 103P/Hartley 2 during a close flyby in October 2010.
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Using the two images above I and Nick Howes we have compute a period of rotation of 18-20 hours.
That image taken even by Nick Howes with a 2 meter telescope permit to measure the spatial length of the main emission that result to be about 828+/- 26 km with an error of about 1 pixels. The resolution of the images is 0.27 arcsec/pixels.
Light Curve of 103/P Comet Updated to 2010 October 1
Detection of a possible minor “outburst” in R photometric band on 20100831 - 20100901
Thanks to Seiichi Yoshida for the usefull program COMET for WINDOWS