C/2010 G2 (Hill)


Type: Periodic Perihelion date: 2 September 2011 Perihelion distance (q): 2.0 Aphelion distance (Q) : 190 Period (years): 943 Eccentricity (e): 0.98 Inclination (i): 103.7 JPL orbit diagram COBS lightcurve Rik Hill discovered a 19th magnitude comet on 10 April 2010 during the Catalina Sky Survey with the 0.68m Schmidt. The comet was over 5 AU from the Sun at discovery. Perihelion was at 2.0 AU in September 2011 and it has a period of around 1000 years. The comet was picked up as it brightened through 14th magnitude in March 2011 and reached 10th magnitude at its brightest in the autumn. The comet may have undergone one or more minor outbursts. Brian Marsden notes on MPEC 2010-M41 [2010 June 22] that the "original" and "future" barycentric values of 1/a are +0.011116 and +0.010947 (+/- 0.000029) AU^-1, respectively. The very large "original" value shows that this comet has made a previous visit to the inner solar system. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 06-Jan-13 19.51 0.21 19.1 0.3 16-Jan-13 19.56 0.14 19.3 0.2