P/2012 B1 (PANSTARRS)

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Type: Periodic Perihelion date: 18 July 2013 Perihelion distance (q): 3.9 Aphelion distance (Q) : 9.2 Period (years): 16.7 Eccentricity (e): 0.41 Inclination (i): 7.6 JPL orbit diagram COBS lightcurve Pan-STARRS discovered a 20th magnitude comet on 25 January 2012. Pre- discovery images by the University of Szeged, Piszkesteto Stn. (Konkoly) were found from 31 December 2011. Following improvements in the orbit, the comet was located in observations made by NEAT in 1997. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 14-Jan-13 16.98 0.04 16.6 0.2 25-Jan-13 16.86 0.03 16.6 0.2 11-Feb-13 16.47 0.02 15.9 0.3 22-Feb-13 16.33 0.02 15.8 0.3 04-Mar-13 16.35 0.01 15.9 0.3 15-Mar-13 16.05 0.02 15.5 0.4 03-Apr-13 15.92 0.02 15.3 0.3 17-Apr-13 16.13 0.01 15.5 0.3 26-Jun-13 16.30 0.01 15.4 0.3 08-Jul-13 16.39 0.02 15.8 0.3 20-Jul-13 16.62 0.05 16.1 0.3 16-Feb-14 16.11 0.02 15.4 0.3 13-Mar-14 16.32 0.02 15.8 0.3 28-Mar-14 16.38 0.03 15.7 0.2 22-Apr-14 16.00 0.01 15.3 0.3 02-May-14 15.74 0.03 14.4 0.3 06-Jun-14 15.60 0.04 14.8 0.3 19-Jun-14 15.90 0.02 14.7 0.2 02-Jul-14 15.91 0.01 14.9 0.2 17-Jul-14 16.18 0.03 15.4 0.2 03-Aug-14 16.38 0.04 14.9 0.2 13-Aug-14 16.52 0.02 15.5 0.2 06-Sep-14 16.86 0.01 15.3 0.2 03-Oct-14 17.23 0.03 16.9 0.2