304P/Ory (0304P)


Type: Periodic Perihelion date: 12 August 2020 Perihelion distance (q): 1.3 Aphelion distance (Q) : 5.0 Period (years): 5.6 Eccentricity (e): 0.60 Inclination (i): 2.6 JPL orbit diagram COBS lightcurve 304P/Ory = 2008 Q2 = 2014 L4 An 18th magnitude apparently asteroidal object discovered by Michel Ory of Delemont, Switzerland, on CCD images obtained with a 0.61-m f/3.9 reflector at Vicques was found to show cometary characteristics after posting on the NEOCP. The comet passed 0.3 au from Jupiter in November 2005, before which the perihelion distance was a little larger. 2008 Q2 was recovered by Hidetaka Sato in images taken with the iTelescope 0.51m astrograph at Siding Spring on 2 June 2014. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 21-Sep-20 17.25 0.02 17.1 0.4 20-Dec-20 18.4 0.4 18-Jan-21 19.1 0.4