257P/Catalina (0257P)

Type: Periodic Perihelion date: 10 September 2020 Perihelion distance (q): 2.1 Aphelion distance (Q) : 5.4 Period (years): 7.3 Eccentricity (e): 0.43 Inclination (i): 20.2 JPL orbit diagram COBS lightcurve 257P/Catalina = 2005 JY126 = 2012 F4 An 18th magnitude comet found during the Catalina Sky Survey on 7 June 2005 was linked to an asteroid detected at the Steward Observatory on 3 May, and with earlier observations by the Catalina Sky Survey on 17 April. It reached perihelion in late February 2006 at 2.13 AU and has a period of 7.3 years. The comet was recovered by G. Sostero, N. Howes, A. Tripp, E. Guido using the 2.0- m Siding Spring-Faulkes Telescope South on 21 March 2012. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 09-Aug-13 17.49 0.00 17.3 0.2 19-Aug-13 17.52 0.26 17.1 0.2 29-Aug-13 17.59 0.04 17.4 0.2 14-Oct-13 16.69 0.07 16.1 0.2 23-Oct-13 17.36 0.10 17.1 0.2 04-Nov-13 17.55 0.04 17.3 0.2 09-Dec-13 18.41 0.08 17.9 0.3 25-Dec-13 18.60 0.15 18.3 0.2 04-Jan-14 18.62 0.24 18.3 0.2 27-May-20 18.24 0.12 17.3 0.3 07-Nov-20 18.04 0.05 17.7 0.4 17-Nov-20 17.6 0.4