Comet ISON's Position Throughout December

DateR.A.Dec.Mag.Dist.
Dec 0116h19m-13°02′+0.0(?)0.850
Dec 1516h11m+15°49′+1.0(?)0.524
Dec 3116h37m+68°53′+4.0(?)0.445

The table gives the comet’s equatorial coordinates – right ascension (R.A.) and declination (Dec.) – at 01:00 Universal Time on selected dates. Also listed are the visual magnitude and the distance from the Earth in astronomical units. One a.u. equals 92,955,807 miles or 149,597,870 kilometers.