C/2012 C1 (McNaught)

DEPARTED

Type: Periodic Perihelion date: 4 February 2013 Perihelion distance (q): 4.8 Aphelion distance (Q) : 2,545 Period (years): 45,533 Eccentricity (e): 1.00 Inclination (i): 96.3 JPL orbit diagram COBS lightcurve Rob McNaught discovered a 19th magnitude comet on CCD images taken with the 0.5-m Uppsala Schmidt telescope at Siding Spring on February 5.56. The comet will reach perihelion at 4.8 AU in 2013 February. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 26-Jan-13 16.80 0.10 16.6 0.2 06-Feb-13 16.71 0.06 16.4 0.2 15-Jun-13 17.39 0.08 16.8 0.2 09-Aug-13 17.63 0.06 17.3 0.2 08-Sep-13 17.69 0.04 17.1 0.4 20-Sep-13 18.11 0.12 17.8 0.2 03-Oct-13 17.65 0.10 17.1 0.2 13-Oct-13 18.05 0.13 17.8 0.2 30-Oct-13 18.13 0.11 17.8 0.2 09-Nov-13 18.07 0.12 17.6 0.2 12-Dec-13 17.99 0.14 17.3 0.2