C/2021 T4 (Lemmon)

Type: Periodic Perihelion date: 31 July 2023 Perihelion distance (q): 1.5 Aphelion distance (Q) : 36,585 Period (years): 2,474,153 Eccentricity (e): 1.00 Inclination (i): 160.8 JPL orbit diagram COBS lightcurve The Mt Lemmon Survey discovered an object of 20th magnitude in images taken with the 1.5m reflector on 7 October 2021. Erik Bryssinck reported cometary activity in images taken with the Telescope Live 0.61-m reflector at El Sauce Observatory, Rio Hurtado, Chile on 11 October. There were pre-discovery images from PanSTARRS 1 in August, PanSTARRS 2 and Mt Lemmon in September and PanSTARRS 1 in October. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 27-Aug-22 17.2 0.4 06-Sep-22 17.00 0.02 17.0 0.4 21-Sep-22 16.42 0.05 16.7 0.4