247P/LINEAR (0247P)

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Type: Periodic Perihelion date: 1 December 2018 Perihelion distance (q): 1.5 Aphelion distance (Q) : 6.4 Period (years): 7.9 Eccentricity (e): 0.62 Inclination (i): 13.7 JPL orbit diagram COBS lightcurve The comet was discovered by LINEAR on 5 November 2002 as an asteroid, of 19th magnitude. Brian Marsden noted that it is not clear if the object is in fact a comet. The orbit is typical of a Jupiter family comet and it can pass within 0.4 AU of the planet. It was refound by LINEAR on 15 November 2010 at 18th magnitude. It was finally confirmed as a comet in December 2010 when observations at the Haute Province Observatory as part of the T2 prject showed that it had a tail. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 13-Oct-18 20.27 0.13 20.1 0.3 03-Dec-18 18.71 0.12 18.5 0.2 11-Dec-18 18.22 0.06 17.9 0.2 18-Dec-18 18.11 0.08 17.8 0.2 01-Jan-19 17.98 0.07 17.7 0.2 08-Jan-19 18.20 0.05 17.7 0.2