C/2013 E2 (Iwamoto)

DEPARTED

Type: Periodic Perihelion date: 9 March 2013 Perihelion distance (q): 1.4 Aphelion distance (Q) : 465 Period (years): 3,557 Eccentricity (e): 0.99 Inclination (i): 21.9 JPL orbit diagram COBS lightcurve Masayuki Iwamoto discovered a 14th magnitude comet on images taken with his 10cm refractor at Tokushima on 10 March 2013. The comet was near perihelion at 1.4 au and was just over 40 degrees elongation from the Sun in the dawn sky. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 09-Jun-13 15.04 0.08 13.3 0.3 23-Jun-13 15.49 0.04 13.5 0.3 03-Jul-13 15.20 0.02 13.1 0.6 31-Jul-13 15.54 0.02 13.4 0.3 13-Aug-13 15.75 0.02 14.1 0.7 29-Aug-13 15.50 0.02 13.7 0.5 13-Sep-13 15.72 0.08 14.3 0.4 27-Sep-13 15.47 0.01 13.6 0.5 07-Oct-13 15.57 0.03 14.0 0.4 25-Oct-13 16.08 0.04 14.5 0.4 09-Nov-13 16.22 0.03 14.0 0.3 15-Dec-13 17.35 0.09 15.9 0.2 31-Dec-13 17.71 0.06 16.5 0.3 11-Jan-14 17.95 0.19 17.1 0.2