Comets - 56P/Slaughter-Burnham - 0056P
Type Periodic Perihelion Date 18 July 2016 Perihelion Distance (q) 2.5 Aphelion Distance (Q) 7.7 Period (Years)   11.5 Eccentricity (e)   0.51 Inclination (i)   8.1 Click for NASA orbit diagram
Hills Observatory: 1 January 2013 to 15 December 2018
COMETS COMETS
DEEP SKY DEEP SKY
C. D. Slaughter and R. Burnham, Jr. (Lowell Observatory, Arizona, USA) were blink examining plates exposed with the 13-inch photographic telescope during the course of the Proper Motion Survey. On 27 January 1959 they found a comet on a plate exposed on 10 December 1958. They estimated the magnitude as 16, and described it as diffuse, with a central condensation. Further examination revealed 8 additional plates showing the comet on December 10, 11, 12, 13, and 15, and this enabled E. Roemer to compute an elliptical orbit and ephemeris, which revealed a perihelion date of 4 August 1958 and an orbital period of 11.18 years. Although searches at Lowell Observatory during the last days of January proved fruitless, Roemer managed to photograph it on 2 February. She said there was only a trace of coma surrounding a nearly stellar central condensation of about magnitude 18.0. Date 10x10 mag Error Kphot mag Coma ' 29-Sep-16 16.04 0.05 14.5 0.3 06-Oct-16 16.12 0.01 14.6 0.3 29-Oct-16 16.07 0.01 14.9 0.3 10-Nov-16 15.85 0.07 13.4 0.6 23-Nov-16 15.84 0.03 14.0 0.4 19-Dec-16 16.39 0.01 15.1 0.4 26-Dec-16 16.57 0.04 14.4 0.4 31-Dec-16 16.75 0.01 14.6 0.4 22-Jan-17 17.20 0.02 14.2 0.4 14-Feb-17 18.01 0.15 16.3 0.2
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