C/2014 A4 (SONEAR)

DEPARTED

Type: Hyperbolic Perihelion date: 5 September 2015 Perihelion distance (q): 4.2 Aphelion distance (Q) : n/a Period (years): n/a Eccentricity (e): 1.00 Inclination (i): 121.4 JPL orbit diagram COBS lightcurve An 18th magnitude object was discovered by Cristovao Jacques, Eduardo Pimentel and Joao Ribeiro de Barros with the 0.46m telescope at the Southern Observatory for Near Earth Research at Oliveira, Brazil on 12 January 2014. It was noted as cometary by other astrometrists. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 18-Jan-14 17.58 0.09 17.1 0.3 29-Jan-14 17.70 0.02 17.5 0.2 05-Feb-14 17.25 0.04 17.1 0.3 17-Feb-14 17.84 0.05 17.6 0.2 24-Feb-14 17.47 0.03 17.1 0.3 03-Mar-14 17.38 0.03 17.1 0.2 13-Mar-14 17.37 0.15 17.3 0.2 20-Mar-14 17.38 0.06 17.2 0.2 04-Apr-14 17.29 0.06 17.2 0.2 12-Apr-14 17.29 0.05 17.2 0.2 05-Aug-14 16.63 0.04 16.2 0.2 27-Aug-14 16.50 0.04 16.0 0.3 11-Sep-14 16.45 0.07 15.9 0.2 20-Sep-14 16.37 0.03 15.7 0.5 28-Sep-14 16.30 0.01 15.4 0.3 06-Oct-14 16.22 0.05 15.3 0.2 07-Oct-14 16.24 0.05 15.7 0.2 15-Oct-14 16.01 0.01 15.1 0.4 18-Oct-14 15.86 0.03 12.8 0.2 20-Oct-14 16.09 0.04 15.0 0.4 27-Oct-14 16.08 0.02 15.2 0.4 03-Nov-14 15.99 0.02 15.1 0.3 10-Nov-14 16.07 0.02 15.4 0.4 17-Nov-14 15.94 0.05 15.1 0.4 24-Nov-14 15.83 0.05 13.1 0.4 01-Dec-14 16.06 0.04 15.4 0.3 08-Dec-14 16.09 0.04 15.3 0.4 15-Dec-14 16.14 0.03 15.3 0.4 23-Dec-14 16.23 0.02 15.6 0.3 30-Dec-14 16.25 0.04 15.4 0.3 29-Jan-15 16.48 0.04 15.3 0.2 27-Jun-15 16.38 0.09 15.8 0.2 19-Jul-15 16.33 0.07 15.9 0.2 26-Jul-15 16.31 0.07 15.0 0.2 09-Aug-15 16.33 0.05 14.4 0.2 23-Aug-15 16.15 0.02 14.9 0.3 07-Sep-15 15.98 0.02 15.2 0.4 14-Sep-15 16.00 0.01 15.2 0.4 21-Sep-15 15.96 0.02 15.2 0.3 09-Oct-15 15.68 0.01 14.9 0.7 19-Oct-15 15.49 0.01 14.5 0.4 31-Oct-15 15.79 0.01 14.9 0.3 09-Nov-15 15.94 0.02 15.1 0.3 16-Nov-15 16.08 0.04 15.1 0.3 09-Dec-15 16.38 0.02 14.6 0.3 28-May-16 16.99 0.05 16.0 0.2 26-Aug-16 16.85 0.01 15.4 0.3 03-Sep-16 16.78 0.06 15.6 0.3 24-Sep-16 16.87 0.03 13.9 0.3 08-Oct-16 17.06 0.04 16.8 0.2 30-Oct-16 17.18 0.01 16.7 0.2 06-Nov-16 17.35 0.10 17.1 0.2