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The new comet, named C/2012 S1 (ISON) was found by the International Scientific Optical Network (ISON) in Russia on 21 September when astronomers Vitali Nevski and Artyom Novichonok captured it on CCD images taken through a 0.4-metre reflector. Its near-parabolic orbit suggests that it has arrived fresh from the Oort Cloud, a vast zone of icy objects orbiting the Sun, pristine remnants of the formation of the Solar System.
C/2012 S1 currently resides in the northwestern
corner of Cancer. At magnitude +18 it is too dim to be seen visually but
it will be within the reach of experienced amateur astronomers with CCD
equipment in the coming months as it brightens. It is expected to reach
binocular visibility by late summer 2013 and a naked eye object in
early November of that year. Northern hemisphere observers are highly
favoured. Following its peak brightness in late November it will remain
visible without optical aid until mid-January 2014.
Better write those dates down when you get your new calendars for 2013. Read more about the comet at Astronomy Now. Link -via Metafilter
(Unrelated image credit: Flickr user NASA's Marshall Space Flight Center)