2011w3 20111226 1746 mcnaught

11) Rob McNaught image taken on 2011 December 26 17:46 UT showing bright central tail spine and “invisible” head. ANU/Uni of Arizona/NASA/Robert H. McNaught Uppsala Schmidt/Siding Spring Survey. Field 1.0x0.8 deg. Stack of 21 x 20sec exposures in mid-twilight. North up, West to right.

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