Comets - 65P/Gunn - 0065P
Type Periodic Perihelion Date 13 October 2017 Perihelion Distance (q) 2.9 Aphelion Distance (Q) 4.9 Period (Years)   7.7 Eccentricity (e)   0.25 Inclination (i)   9.2 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 6 May 2018
COMETS COMETS
DEEP SKY DEEP SKY
The comet was discovered on 11 October 1970 by Professor James E. Gunn of Princeton University using the 122-cm Schmidt telescope at the Palomar Observatory. It had a low brightness of magnitude 16 plus which improves to 12 under favourable conditions. The comet orbits the Sun inside the main asteroid belt between the orbits of the planets Mars and Jupiter. On 4 February 1970 the comet passed 0.015 AU (2,200,000 km) from Ceres. Date 10x10 mag Error Kphot mag Coma ' 24-Dec-15 17.56 0.08 16.7 0.2 04-Feb-16   16.86 0.02 16.2 0.2 05-Mar-16 16.43 0.02 15.5 0.3 29-Mar-16 16.35 0.01 15.5 0.4 12-Apr-16 16.41 0.01 15.6 0.5 01-May-16 16.45 0.03 15.1 0.6 28-May-16 16.73 0.03 15.7 0.5 07-Jun-16 16.81 0.02 15.6 0.3 26-Feb-17 16.19 0.05 13.1 0.5 05-Mar-17 16.47 0.04 15.3 0.5 29-Mar-17 16.37 0.02 14.6 0.5 21-Apr-17 16.07 0.02 14.5 0.7 03-May-17 15.82 0.01 14.1 0.4 18-May-17 15.50 0.01 13.2 0.7 28-May-17 15.52 0.01 13.8 0.7 28-Jun-17 15.89 0.01 13.7 0.9 11-Jul-17 15.40 0.02 13.0 0.7 20-Jul-17 16.02 0.02 13.2 0.8 24-Aug-17 16.62 0.04 15.1 0.3