329P/LINEAR-Catalina (0329P)

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Type: Periodic Perihelion date: 29 November 2015 Perihelion distance (q): 1.7 Aphelion distance (Q) : 8.7 Period (years): 11.8 Eccentricity (e): 0.68 Inclination (i): 21.7 JPL orbit diagram COBS lightcurve An apparently asteroidal object was discovered by the LINEAR project on 18 November 2003 (observed on only two nights) and given the designation 2003 WC_7. The object was discovered independently on 31 January 2004 by the Catalina Sky Survey and then posted on the NEO Confirmation Page. As a result, it has been found to show cometary appearance on CCD exposures taken by J. Young (Table Mountain, 0.6-m reflector, Feb. 1) and by G. J. Garradd and R. H. McNaught (Siding Spring, 1.0-m f/8 reflector, 1 February). PanSTARRS discovered what was thought to be an unknown 20th magnitude comet on 10 October 2015, though the discovery report did suggest that it might be a recovery of 2003 WC7 (P/LINEAR-Catalina). Further astrometry confirmed the identification. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 04-Nov-15 17.07 0.03 15.6 0.2 20-Nov-15 16.08 0.07 12.9 0.2 04-Dec-15 16.12 0.02 14.3 0.4 14-Dec-15 15.90 0.05 14.2 0.2