How Far Away is Comet C/2012 S1 (ISON) from Earth?
The distance of Comet C/2012 S1 (ISON) from Earth is currently 4,286,626,077 kilometers, equivalent to 28.654325 Astronomical Units. Light takes 3 hours, 58 minutes and 18.6455 seconds to travel from Comet C/2012 S1 (ISON) and arrive to us.