242P/Spahr (0242P)

Type: Periodic Perihelion date: 23 December 2024 Perihelion distance (q): 4.0 Aphelion distance (Q) : 7.1 Period (years): 13.0 Eccentricity (e): 0.28 Inclination (i): 32.4 JPL orbit diagram COBS lightcurve Atlas 242P/Spahr = 1998 U4 = 2010 P3 The comet was discovered by Timothy B Spahr of the University of Arizona on 27 October 1998 on CCD images taken with the Catalina Sky Survey 0.41-m f3 Schmidt. It was 17th magnitude and was confirmed by Spacewatch Telescope images. Gary Hug recovered comet 1998 U4 (P/Spahr) on 14 August 2010 on images taken with a 0.56-m reflector located near Scranton, KS, U.S.A. The indicated correction to the prediction by B. G. Marsden on MPC 65938 is Delta(T) = +0.04 day. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 29-Jan-13 17.44 0.08 17.0 0.3 04-Jan-14 19.32 0.16 19.1 0.2 24-Jan-14 19.15 0.20 18.8 0.2 03-Feb-14 19.09 0.16 18.7 0.2 10-Sep-23 20.0 0.4 12-Sep-23 20.0 0.4 20-Sep-23 20.1 0.4 07-Oct-23 19.9 0.4 14-Oct-23 20.0 0.4 10-Sep-24 18.9 0.4 26-Sep-24 18.8 0.4 05-Oct-24 18.8 0.4 13-Oct-24 18.7 0.4 24-Oct-24 18.6 0.4 05-Nov-24 18.6 0.4 21-Nov-24 18.7 0.4 28-Nov-24 18.6 0.4 18-Dec-24 18.7 0.4 27-Dec-24 18.7 0.4 16-Jan-25 18.8 0.4 25-Jan-25 18.7 0.4 13-Feb-25 18.7 0.4