240P/NEAT (0240P)

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Type: Periodic Perihelion date: 15 May 2018 Perihelion distance (q): 2.1 Aphelion distance (Q) : 5.6 Period (years): 7.6 Eccentricity (e): 0.45 Inclination (i): 23.5 JPL orbit diagram COBS lightcurve K. J. Lawrence reported the discovery of a comet of magnitude 18.4 by the NEAT team from CCD images taken with the 1.2-m Schmidt telescope at Palomar on 7 December 2002. The comet was independently recovered between 9 and 11 August 2010 by H. Taylor (Rayle, GA, U.S.A., 25-cm reflector), by H. Sato (Tokyo, Japan; remotely, 25-cm reflector, RAS Observatory, Mayhill, NM, U.S.A.; 20" coma and 30" tail in p.a. 260 deg), by L. Elenin (Lyubertsy, Russia; remotely, 45-cm f/2.8 astrograph, ISON-NM Observatory, Mayhill; 50" tail), and by T. Yusa (telescope data same as for Sato; faint 25" tail in p.a. 252 deg). Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 11-Oct-17 15.74 0.04 14.0 0.7 11-Oct-17 15.74 0.04 13.6 1.0 25-Oct-17 15.92 0.01 13.6 0.8 20-Nov-17 16.11 0.02 12.8 0.9 01-Jan-18 16.36 0.02 13.4 0.8 11-Feb-18 16.16 0.05 13.4 1.2 13-Oct-18 17.55 0.09 16.0 0.4 10-Nov-18 16.91 0.09 15.8 0.4 23-Nov-18 15.72 0.02 14.8 0.6 03-Dec-18 15.92 0.02 14.7 0.7 14-Dec-18 16.13 0.02 14.6 0.7 31-Dec-18 16.06 0.01 14.8 0.7 01-Jan-19 16.00 0.02 14.1 0.7 12-Jan-19 16.18 0.01 14.6 0.8 07-May-19 17.88 0.02 16.0 0.5 27-May-19 18.15 0.11 15.4 0.4