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Recovery of Comet 164P/Christensen

13 Oct 2010, 08:59 UTC
Recovery of Comet 164P/Christensen
(200 words excerpt, click title or image to see full post)

MPEC 2010-T98, issued 2010 October 13, reports our recovery of comet 164P/Christensen. We found the comet on October 07 and October 11, 2010 at about magnitude 20.4. We imaged it remotely from D96 code (Moorook) using a 0.15-m f/7.3 refractor + CCD.On 2010, Oct.11 the seeing conditions at Moorook (Australia) were exceptional, so we had the chance to identify the comet at the very limit of our capabilities, as a faint dot of light (magnitude about 20.4). Then, knowing where to look for, we searched in our archive images, and found it again in our stackings of 2010, Oct. 7; then we had the astrometry over two nights, that was fitting pretty well the expected orbit of 164P.However comet 164P/Christensen is much fainter (more than 3 magnitudes) compared to the predictions.Our recovery image (details on image):Please click here for a bigger version.Comet 164P/Christensen was last observed (before our recovery) on June 18, 2005 by G96 (Mt. Lemmon Survey).by G. Sostero, E. Guido, L. Donato & V. Gonano

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