How Far Away is Comet C/2012 S1 (ISON) from Earth?
The distance of Comet C/2012 S1 (ISON) from Earth is currently 4,129,678,623 kilometers, equivalent to 27.605197 Astronomical Units. Light takes 3 hours, 49 minutes and 35.1251 seconds to travel from Comet C/2012 S1 (ISON) and arrive to us.