407P/PanSTARRS-Fuls (0407P)

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Type: Periodic Perihelion date: 1 February 2020 Perihelion distance (q): 2.1 Aphelion distance (Q) : 4.8 Period (years): 6.4 Eccentricity (e): 0.38 Inclination (i): 4.9 JPL orbit diagram COBS lightcurve 407P/PanSTARRS-Fuls = 2013 J4 = 2019 Y2 Pan-STARRS discovered a 21st magnitude comet on 5 May 2013. It reached perihelion at 2.3 au in July 2013 and was thought to have a period of around 16 years. D Carson Fuls discovered a comet of 19th magnitude in Mt Lemmon Survey images taken with the 1.5m reflector on 21 December 2019. It was placed on the PCCP as C1N4PQ2 and confirmed by other observers including Michael Jaeger and Eric Bryssinck. Sam Deen has shown that the two comets are identical. The comet passed 0.34 au from Jupiter in 2010 in an encounter that significantly changed the orbit. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 05-Jan-20 18.05 0.15 17.4 0.3 22-Jan-20 17.09 0.03 15.9 0.5 01-Feb-20 17.56 0.10 16.1 0.5 18-Feb-20 17.86 0.04 16.3 0.4 21-Feb-20 17.97 0.05 17.0 0.6 04-Mar-20 17.97 0.14 17.1 0.5 18-Mar-20 17.63 0.03 16.4 0.5 28-Mar-20 17.33 0.03 15.9 0.6