C/2022 S4 (Lemmon)

DEPARTED

Type: Hyperbolic Perihelion date: 18 July 2024 Perihelion distance (q): 2.8 Aphelion distance (Q) : n/a Period (years): n/a Eccentricity (e): 1.00 Inclination (i): 101.2 JPL orbit diagram COBS lightcurve An apparently asteroidal object of 21st magnitude was found by the Mt Lemmon Survey in images taken with the 1.5-m reflector on 19 September 2022. It was placed on the PCCP as C819FC2 after cometary characteristics were noted by astrometrists. There were pre-discovery PanSTARRS 2 images from 26 August 2022. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 11-Sep-23 17.7 0.4 20-Sep-23 17.6 0.4 21-Sep-23 17.5 0.4 07-Oct-23 17.8 0.4 14-Oct-23 17.3 0.4 22-Oct-23 17.3 0.4 03-Nov-23 17.3 0.4 12-Nov-23 17.4 0.4 07-Dec-23 17.7 0.4 29-Dec-23 17.5 0.4 09-Jan-24 17.9 0.4