Comet LINEAR, formal designation C/2012 X1, is a non-periodic comet that was observed telescopically from 2012 to 2015. It produced a powerful outburst on 21 October 2013, which raised its brightness 100 times its expected magnitude from 12 to 8.5 for several months.
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This article is an automated import of the Wikipedia article "C/2012 X1 (LINEAR)", available at https://en.wikipedia.org/wiki/C%2F2012_X1_(LINEAR) . Text is licensed under CC BY-SA 4.0.