* * * * * C/2020 Y2 (ATLAS) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2022 12 26.52 M 14.9 AQ 40.0L 182 0.5 6 WYA Walcha, NSW (Difficult due to bright star in field.) 2022 12 20.47 M 15.0 AQ 40.0L 182 0.6 5/ WYA Walcha, NSW (Diffuse, faint stellar pseudo-nucleus visible in good seeing.) 2022 11 25.62 M 14.9 AQ 40.0L 182 0.8 4/ WYA Walcha, NSW (Diffuse, opaque centre. Faint stellar pseudo-nucleus sometimes visible.) 2022 11 23.53 M 15.0 AQ 40.0L 261 0.5 5/ WYA Walcha, NSW (Opaque centre, diffuse outer. Pseudo-nucleus visible in good seeing.) 2022 10 29.69 M 14.8 AQ 40.0L 261 0.7 4/ WYA Walcha, NSW (Diffuse. opaque centre. Close to star.) 2022 10 28.67 M 14.8 AQ 40.0L 261 0.6 6 WYA Walcha, NSW (Opaque centre. Stellar pseudo-nucleus visible in good seeing.) 2022 5 6.47 M 14.9 AQ 40.0L 261 0.5 5 WYA Walcha, NSW (Diffuse, opaque centre.) 2022 5 3.42 M 14.8 AQ 40.0L 261 0.6 5/ WYA Walcha, NSW (Diffuse. Stellar pseudo-nucleus visible in good seeing.) 2022 5 2.39 M 14.8 AQ 40.0L 261 0.5 6 WYA Walcha, NSW (Small round coma. Faint stellar pseudo-nucleus visible in good seeing periods.) 2022 4 20.37 S 15.0 AQ 40.0L 182 0.5 3 WYA Walcha, NSW 2022 4 5.44 M 14.4 AQ 40.0L 261 0.6 5/ WYA Walcha, NSW (Diffuse. Stellar pseudo-nucleus visible in good seeing.) 2022 4 4.47 M 14.6 AQ 40.0L 182 0.7 5/ WYA Walcha, NSW (Diffuse outer coma, opaque centre, stellar pseudo-nucleus visible in good seeing.) 2022 3 22.39 M 14.1 AQ 40.0L 182 0.7 4 WYA Walcha, NSW (Very diffuse, slight opaque centre.) 2022 3 21.39 M 14.4 AQ 40.0L 182 0.7 4 WYA Walcha, NSW (Small and diffuse, poor seeing, close to mag 12.4 star but easy to see.) 2021 12 14.70 S 15.1 AQ 40.0L 261 0.3 4 WYA Walcha, NSW (Diffuse coma, slight brightening to centre.)