C/2023 S3 (Lemmon)

DEPARTED

Type: Periodic Perihelion date: 19 January 2024 Perihelion distance (q): 0.8 Aphelion distance (Q) : 56.2 Period (years): 152.1 Eccentricity (e): 0.97 Inclination (i): 140.5 JPL orbit diagram COBS lightcurve A possible NEO candidate of 20th magnitude was discovered on 25 September 2023 in images taken with the 1.5-m reflector of the Mt Lemmon Survey. Subsequently, other astrometrists reported that it had cometary features. Observations (VEMag = visual equivalent magnitude) Date 10x10 mag Error VEmag Coma ' 07-Oct-23 19.9 0.4 05-Apr-24 15.8 0.8 06-May-24 18.4 0.4 11-May-24 18.8 0.4 25-May-24 19.3 0.4