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Outburst of comet C/2012 X1 (LINEAR)

21 Oct 2013, 17:38 UTC
Outburst of comet C/2012 X1 (LINEAR)
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Cbet No. 3674, issued on 2013 October 21, reports an outburst in brightness of comet C/2012 X1 (LINEAR). The magnitude of the comet was measured by reported by H. Sato on on Oct. 20.5 to be total mag 8.5 (as measured within a circular aperture of diameter 85".2) with a brighter center about 10" across. The predicted H_10 magnitude for C/2012 X1 (LINEAR) would be around 14 now.We performed follow-up measurements of this object on 2013 October 21.51. Below you can see our image of this comet, stacking of 3x20-seconds unfiltered exposures, obtained remotely from MPC code H06 (iTelescope Observatory, New Mexico) through a 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer. At the moment of the imaging session, the comet was just +16 degree above the horizon and the Sun was -11 degree. Click on it for a bigger version.The comet shows a morphology similar to the outburst of comet 17P/Holmes in 2007: the C/2012 X1 disk-like coma diameter is about 105" and the sharp central condensation is ~15" across with magnitude ~11. Below you can see the magnitude graph of C/2012 X1 (click on the image for a bigger version).Credit: S. Yoshidaby Ernesto Guido, Nick Howes and ...

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