Comets - 213P/Van Ness - 0213P
Type Periodic Perihelion Date 24 September 2017 Perihelion Distance (q) 2.0 Aphelion Distance (Q) 4.7 Period (Years)   6.1 Eccentricity (e)   0.41 Inclination (i)   10.4 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 14 August 2018
COMETS COMETS
DEEP SKY DEEP SKY
  M E Van Ness noted a 17th magnitude cometary object on LONEOS images taken on 10 September 2005. It was in a short period orbit of 6.3 years and was at perihelion at 2.13 AU in February 2005. It brightened to visual range in October, but then faded, so this was clearly a temporary outburst. Comet 2005 R2 (P/Van Ness) was recovered by Gary Hug with his 0.56-m reflector at Sandlot Observatory on 31 January 2009 at 21st magnitude.  It became brighter than expected in 2011 and a secondary condensation was observed by Giovanni Sostero, Nick Howes, Helen Blyth and Ernesto Guido in images taken with the Haleakala-Faulkes Telescope North on 5 August, and subsequently seen in images by J. Gonzalez at the end of July and early August. Orbital calculations by Hirohisa Sato suggest that the split occurred in 2007 or 2008. Following an alert from a Japanese observatory, the team observed an additional component in September. The continued fragmentation may explain why the comet has remained brighter than expected. Date 10x10 mag Error Kphot mag Coma ' 22-Apr-17 17.75 0.16 16.5 0.2 21-May-17 16.44 0.02 15.3 0.4 28-May-17 16.23 0.01 14.9 0.4 21-Jun-17 15.27 0.01 14.0 0.6 22-Jun-17 15.23 0.01 13.9 0.5 29-Jun-17 14.81 0.01 13.5 1.2 16-Jul-17 14.87 0.03 13.6 0.5 10-Sep-17 16.41 0.07 14.2 0.4 11-Oct-17 16.86 0.02 14.5 0.4 20-Nov-17 17.61 0.03 14.2 0.4
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