* * * * * C/2017 B3 (LINEAR) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2019 11 19.43 S 14.7 AQ 40.0L 261 0.5 3/ WYA Walcha, NSW (Coma diffuse, small coma, hazy with slightly brighter centre.) 2019 10 19.50 M 14.6 AQ 40.0L 108 0.5 6 WYA Walcha, NSW (Coma small and diffuse with a faint stellar pseudo-nucleus visible in good seeing.) 2019 10 18.42 M 14.6 AQ 40.0L 108 0.9 5/ WYA Walcha, NSW (Stellar pseudo-nucleus in good seeing, surrounded by an opaque and hazy outer coma.) 2019 10 3.68 M 14.5 AQ 40.0L 108 1 5/ WYA Walcha, NSW (Sometimes appears faintly stellar in good seeing, hazy outer coma, opaque inner coma.) 2019 10 2.69 M 14.4 AQ 40.0L 108 1 5/ WYA Walcha, NSW (Small diffuse coma, opaque centre, stellar pseudo-nucleus visible in good seeing periods.) 2019 10 1.42 M 14.5 AQ 40.0L 108 0.9 6 WYA Walcha, NSW (Faint stellar pseudo-nucleus, diffuse outer coma.) 2019 9 24.55 M 14.4 AQ 40.0L 108 0.9 6 WYA Walcha, NSW (Faint stellar pseudo-nucleus, small coma with opaque inner coma.) 2019 9 23.54 M 14.4 AQ 40.0L 108 0.6 6 WYA Walcha, NSW (No enhancement in Swan band filter.) 2019 9 5.70 M 14.0 AQ 40.0L 108 0.8 5/ WYA Walcha, NSW (Centre opaque, stellar pseudo-nucleus visible in good seeing.) 2019 9 3.69 M 13.8 AQ 40.0L 108 1.3 5/ WYA Walcha, NSW (Does not enhance in Swan Band filter. Diffuse coma, opaque centre, sometimes stellar pseudo-nucleus visible in periods of good seeing.) 2019 8 28.70 M 14.0 AQ 40.0L 108 1.3 5/ WYA Walcha, NSW (Opaque centre, sometimes stellar pseudo-nucleus visible, fading to edges. Does not enhance in Swan Band filter.) 2019 8 8.70 M 14.4 AQ 40.0L 108 1.1 6 WYA Walcha, NSW (Faint stellar pseudo-nucleus. Coma diffuse with opaque centre.) 2019 8 3.69 M 14.2 AQ 40.0L 108 1.4 6 WYA Walcha, NSW (Faint stellar pseudo-nucleus. Hazy outer coma, does not enhance in Swan Band filter.) 2019 5 8.74 S 14.4 AQ 25.0L 83 0.6 2/ WYA Walcha, NSW (Very small, diffuse, slight brightening to centre.)