Comets - C/2013 C2 (Tenagra) - CK13C020
Type Periodic Perihelion Date 28 August 2015 Perihelion Distance (q) 9.1 Aphelion Distance (Q) 23.0 Period (Years)   64.3 Eccentricity (e)   0.43 Inclination (i)   21.3 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 15 September 2018
COMETS COMETS
DEEP SKY DEEP SKY
Michael Schwartz and Paulo Holvorcem discovered a very distant comet on 2013 February 14.24 at the Tenagra II Observatory in Arizona. At discovery the comet was around 19th magnitude and over 9 au from the Earth. Perihelion is at 9.1 au in 2015 August. It has a period of around 60 years.  Given the distant orbit, little change in the brightness of the comet was expected, but it have brightened significantly during February 2015 from 17th magnitude at the beginning of the month to 14th magnitude on the 27th.  For this reason it should be monitored. Date 10x10 mag Error Kphot mag Coma ' 1 Mar 13 18.09 0.19 17.7 0.3 29 Mar 13 18.76 0.01 17.7 0.1 5 Apr 13 18.84 0.04 18.6 0.1 28 Dec 13 18.45 0.06 18.2 0.2 7 Jan 14 18.47 0.07 18.0 0.3 25 Jan 14 18.61 0.06 18.0 0.3 4 Mar 14 18.52 0.08 18.0 0.2 20 Mar 14 18.47 0.17 17.4 0.2 6 Apr 14 18.45 0.23 18.2 0.2 18 Apr 14 18.85 0.14 18.6 0.2 29 Apr 14 18.63 0.07 18.0 0.2 20 May 14 18.62 0.05 18.2 0.2 25 Dec 14 18.82 0.14 18.6 0.2 25 Jan 15 18.51 0.02 17.8 0.2 2 Feb 15 17.62 0.11 17.4 0.2 10 Feb 15 18.09 0.03 n/a n/a 16 Feb 15 18.39 0.19 17.0 0.2 23 Feb 15 15.41 0.04 15.1 0.2 11 Mar 15 16.49 0.03 14.9 0.4 18 Mar 15 16.91 0.03 14.8 0.3 22-Apr-15 17.38 0.04 14.4 0.2 16-May-15 17.82 0.06 14.6 0.2 18-Dec-15 18.52 0.11 17.2 0.2 12-Mar-16 18.14 0.06 14.4 0.2 15-Mar-16 18.57 0.09 16.3 0.2 10-Apr-16 18.30 0.04 16.1 0.2 12-Apr-16 18.39 0.05 17.4 0.2 05-May-16 18.37 0.07 17.2 0.2 30-May-16 18.30 0.05 14.6 0.2 02-Jun-16 18.19 0.03 15.6 0.2 27-May-16 18.21 0.05 16.9 0.2 07-Jun-16 18.04 0.04 16.5 0.2 02-Apr-17 18.36 0.10 17.9 0.2 06-Apr-17 18.39 0.10 18.0 0.2 23-Apr-17 18.62 0.24 17.9 0.3
DEPARTED