C/2012 S1 (ISON) Comet of the century?. Basic Information. Discovered in September 2012 Vitali Nevski and Artyom Novichonok Named after the International Scientific Optical Network where it was discovered. Comet ISON as seen on September 22nd, 2012. So what's special about it?.
Comet ISON as seen on September 22nd, 2012
Great Comet of 1680
Great Comet of 2007