* * * * * C/2018 W2 (Africano) * * * * *

Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2019 11 19.44 M 13.1 AQ 40.0L 108 1.3 3/ WYA Walcha, NSW (Glare from nearby magnitude 6.4 star. Very diffuse coma, slightly brighter in centre. Sky slightly hazy.) 2019 11 2.61 S 11.1 AQ 40.0L 59 3 3 WYA Walcha, NSW (Coma diffuse, opaque central condensation. Low altitude 19.7°.) 2019 11 2.37 S 10.7 TJ 40.0L 144 1.7 1 YOS Kita-karuizawa, Gunma 2019 11 1.39 S 11.4:TJ 40.0L 75 1.8 2 YOS Kita-karuizawa, Gunma (Hard to see due to the low sky and moonlight condition. The magnitude was somewhat uncertain because too close to a 11.7-mag star.) 2019 10 19.51 M 10.6 AQ 11.0L 28 3.7 4 WYA Walcha, NSW (Coma diffuse, opaque centre, moderately condensed.) 2019 10 6.940 S 9.4 TK 15.5L 24 5 2 DIJ Burlage 2019 10 6.937 S 9.5 TK 15.5L 24 6 2/ BOU Burlage, Germany 2019 10 4.93 S 9.2 TK 20.3T 77 6 3/ GON Alto del Castro - Aralla, León 2019 10 4.882 S 9.0 TK 8.0B 15 9 3 DIJ Burlage 2019 10 3.876 S 8.9 TK 8.0B 15 9 3/ DIJ Burlage 2019 10 2.875 S 8.9 TA 8.0B 15 6.8 5 DIJ Burlage 2019 10 1.43 M 8.9 TK 7.0B 11 8.5 4 WYA Walcha, NSW (Very diffuse, opaque centre moderately condensed.) 2019 9 30.803 S 8.9 TA 8.0B 15 7 5 DIJ Burlage 2019 9 28.96 S 8.1 TK 5.0B 10 6 5 GON Alto del Castro - Aralla, León 2019 9 28.95 S 8.3 TK 10.0B 25 7 4 0.3 20 GON Alto del Castro - Aralla, León 2019 9 28.94 S 8.6 TK 20.3T 77 6 3/ 0.2 20 GON Alto del Castro - Aralla, León 2019 9 28.50 S 8.3 AA 10.0B 25 8 SEA Cowra, NSW 2019 9 26.84 S 9.6 TT 40.0L 60 4 3 FIL Jerzmanowice 2019 9 25.823 S 9.0 TA 15.5L 29 7.2 4/ DIJ Burlage 2019 9 25.817 S 8.8 TA 8.0B 15 7 3/ DIJ Burlage 2019 9 25.49 S 9.2 TJ 40.0L 36 6.5 3 YOS Kita-karuizawa, Gunma (Diffuse but large.) 2019 9 24.54 S 8.7 TK 5.0B 7 13 3 WYA Walcha, NSW (Diffuse. Hint of faint tail tracing to South. Enhances slightly in Swan Band filter.) 2019 9 24.49 S 8.4 AA 5.0B 10 8 3 SEA Cowra, NSW (Slightly enhanced through Swan Band filter.) 2019 9 23.906 S 8.9 TA 8.0B 15 6.6 3/ DIJ Burlage 2019 9 23.844 S 9.0 TA 8.0B 15 8 3 BOU Lauwersoog 2019 9 23.56 M 9.5 TK 40.0L 59 4.8 6 WYA Walcha, NSW (Enhances well in Swan band filter. Small pseudo-nucleus visible, transparent outer coma, opaque inner coma.) 2019 9 21.815 S 9.4 TA 25.4J 47 5.5 3/ BOU Lauwersoog 2019 9 21.808 S 9.1 TA 8.0B 15 7.5 3 BOU Lauwersoog 2019 9 21.806 S 9.2 TA 15.5L 42 3.5 3/ DIJ Burlage 2019 9 20.822 S 9.5 TA 25.4J 47 6 3 BOU Sint Annen 2019 9 20.822 S 9.1 TA 15.5L 42 5.5 3 DIJ Burlage 2019 9 11.06 S 10.0 TK 20.0L 42 & 5 2 SCH Eerbeek 2019 9 9.69 S 9.6 TJ 40.0L 36 6 2 YOS Kita-karuizawa, Gunma (Bright and large. Weakly condensed and diffuse.) 2019 9 6.08 S 10.5 TK 20.0L 42 & 4 2 SCH Eerbeek (In cluster with several weak stars.) 2019 9 5.74 S 10.7 AQ 40.0L 59 3.9 3 WYA Walcha, NSW (Very low altitude 5.9°. Very diffuse, transparent coma.) 2019 9 4.904 S 10.5 TA 15.5L 42 2.1 3 DIJ Burlage 2019 9 4.890 S 10.4 AQ 25.4J 58 4 3 BOU Sint Annen 2019 9 4.10 S 9.8 TK 20.3T 77 6 2/ GON Alto del Castro - Aralla, León 2019 9 3.74 S 10.8 AQ 40.0L 59 3.6 2 WYA Walcha, NSW (Very low altitude 4.9°. Slightly enhances in Swan Band filter. Very diffuse.) 2019 9 1.935 S 10.5 TA 15.5L 42 2.4 3/ DIJ Burlage 2019 8 31.06 S 10.8:TK 20.0L 80 & 2 1 SCH Eerbeek (Only averted vision. Star m=7.2 nearby.) 2019 8 20.958 S 10.6 TA 15.5L 42 2.8 3/ DIJ Burlage 2019 8 28.05 S 9.9 TK 20.3T 77 5 2/ GON Alto del Castro - Aralla, León 2018 8 25.882 S 10.6 AQ 30.5T 73 3.2 2/ BOU Burlage, Germany 2019 8 25.879 S 10.8 AQ 30.5T 73 2.5 2 DIJ Burlage 2019 8 24.872 S 10.7 TA 15.5L 75 2.3 2/ DIJ Burlage 2018 8 24.869 S 10.8 AQ 25.4J 72 3.0 3 BOU Sint Annen 2019 8 22.90 S 9.8 TK 20.3T 100 5 2 GON Alto del Castro - Aralla, León (Several stars in coma, the brightest being mag 11.1 [TK].) 2019 8 20.867 S 10.9 AQ 25.4J 72 2.5 3 BOU Sint Annen 2019 8 16.76 S 11.1 TJ 40.0L 144 1.8 2/ YOS Kita-karuizawa, Gunma (Diffuse. Moonlight.) 2019 8 5.09 S 10.2 TK 20.3T 77 4 2/ GON Alto del Castro - Aralla, León 2019 8 2.11 S 10.3 TK 20.3T 77 4 2/ GON Alto del Castro - Aralla, León 2019 7 30.03 S 10.3 TK 20.3T 77 4 2/ GON Alto de la Camperona, León 2019 7 24.94 S 10.4 TK 20.3T 100 4 2/ GON Alto de la Camperona, León 2019 7 6.10 S 11.1 TK 20.3T 100 4 2/ GON Alto de la Camperona, León (Brighter than expected. Altitude 28°. Observation made under better conditions, from a dark mountain location, providing a much wider coma diameter and brighter m1 estimate in comparison with my previous June 26 observation.) 2019 6 26.96 S 12.7 AQ 20.3T 133 0.6 5 GON Alto de la Camperona, León (Nearby field stars checked in DSS. Altitude 16°.)