http://www.cometison2013.co.uk/perihelion-and-distance/
41 million miles is almost halfway to the SUN, ISON is no threat. You would get a better reception over at abovetopsecret.com. You’re a long time member of FR and I don’t really want to call you a kook, but you’re posting youtube videos of doom-porn. It is slightly irritating. You can research real science for yourself and understand orbital physics, space physics, comets, meteors, debris, trajectory, etc.