As of December 29, 2012, Comet ISON is approximately 5.293 AU from the sun.
Tonight’s updates include:
Technorati.com reports that in 2013, Comet ISON “is expected to pass within 700,000 miles from the Sun on Nov. 28th. After that, ISON is projected to come close enough to be seen in Earth’s skies, even during broad daylight.”
The last time a comet was visible to viewers during the daylight was in 1965 with Comet Ikeya-Seki. According to Space.com, Comet Ikeya-Seki was “was the brightest comet of the 20th century, and was found just over a month before it made perihelion passage in the morning sky, moving rapidly toward the sun.” Comet ISON will have several months before it makes perihelion in November 2013.
Space.com also reports that at the time, Comet Ikeya-Seki “could be seen by observers merely by blocking out the sun with their hands.” As an intriguing note, Comet Ikeya-Seki was described at the time as appearing “ten times brighter than the full moon,” with a magnitude of -15.