A 19th magnitude comet was discovered in PanSTARRS 1 images taken with the 1.8m Ritchey-Chretien on 2014 November 26. Tim Spahr identified pre-discovery observations in images taken by Mt Lemmon, ISON and Catalina. The comet will reach perihelion at 3.4 au in 2015 June and has a period of around 30 years. An encounter with Saturn will increase the perihelion distance to 3.7 au and slightly reduce the period at the next return.Date10x10 magErrorKphot magComa '14 Dec 1417.210.0517.10.226 Dec 1416.570.0416.30.22 Jan 1516.290.0514.70.214 Jan 1515.700.0515.50.223 Jan 1515.400.0115.20.230 Jan 1515.090.0114.60.58 Feb 1514.980.0114.70.225 Feb 1514.830.0214.60.211 Mar 1514.760.0114.50.318 Mar 1514.780.0214.40.304-Apr-1514.800.0314.10.219-Apr-1514.820.0214.20.401-May-1514.950.0914.30.210-May-1514.840.0614.30.317-May-1514.750.0114.20.322-May-1514.710.0214.10.430-May-1514.760.0314.20.306-Jun-1514.750.0214.30.327-Jun-1514.730.0314.00.210-Dec-1515.300.0214.10.318-Dec-1515.410.0214.40.304-Feb-1615.51 0.0114.40.211-Feb-1615.450.0314.40.321-Feb-1615.440.0514.60.304-Mar-1615.420.0313.30.313-Apr-1615.320.0114.30.412-May-1615.400.0214.50.528-May-1615.690.0114.30.607-Jun-1615.710.0214.50.526-Jun-1616.040.0214.70.5
This image comprises 3 x Clear (150 seconds each), stacked on the comet, taken with the 0.5m f/2.9 ASA Astrograph with FLI ML3200 camera, at 23:38 UTC on 28 May 2016 while at an altitude of 31 degrees.The field of view is 26’ x 17’, North is up and East to the left.