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* * * * * C/2019 Y1 (ATLAS) * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2020 6 22.44 M 13.6 AQ 40.6L 165 1.5 3 CAM Katherine, NT 2020 6 21.46 M 13.6 AQ 40.6L 165 1 3 CAM Katherine, NT 2020 6 20.98 S 11.5 TK 20.3T 77 2 3 GON Alto del Castro - Aralla, León 2020 6 20.43 M 13.5 AQ 40.6L 165 1 3 CAM Katherine, NT 2020 6 19.46 M 13.5 AQ 40.6L 76 1 3 CAM Katherine, NT 2020 6 18.44 M 13.6 AQ 40.6L 165 1 3 CAM Katherine, NT 2020 6 15.43 M 13.6 AQ 40.6L 165 2 3 CAM Katherine, NT 2020 6 14.42 S 13.5 AQ 40.6L 76 3 2 CAM Katherine, NT 2020 6 13.42 S 13.6 AQ 40.6L 76 2 1/ CAM Katherine, NT 2020 6 12.47 S 13.1 AQ 40.6L 76 3 1/ CAM Katherine, NT 2020 6 9.46 S 12.0 AQ 40.6L 76 2 1 CAM Katherine, NT 2020 6 7.42 S 12.0 AQ 40.6L 76 2 1/ CAM Katherine, NT 2020 5 29.44 S 11.2 AQ 40.6L 76 2 2 CAM Katherine, NT 2020 5 28.43 S 11.0 AQ 40.6L 76 2 2 CAM Katherine, NT 2020 5 28.003 S 11.3 AQ 25.4J 72 2.2 1/ BOU Sint Annen (Some interference from star of magn. 11.1 near edge of coma.) 2020 5 27.94 S 9.8 TK 20.3T 77 4 2/ GON Puerto Ventana, Asturias 2020 5 26.983 S 11.2 TA 15.5L 42 4 2 DIJ Burlage 2020 5 26.973 S 11.0 AQ 15.6L 45 2.5 2 BOU Sint Annen 2020 5 26.45 S 11.0 AQ 40.6L 76 3 2 CAM Katherine, NT 2020 5 26.02 S 9.8 TK 20.3T 77 5 2/ GON Renorios - Bello - Aller, Asturias 2020 5 25.99 S 11.3 AQ 40.7L 72 3 2 BIV 2020 5 25.945 S 11.0 TA 15.5L 29 3.2 3 DIJ Burlage 2020 5 18.99 S 10.5 AQ 40.7L 72 4 2 BIV 2020 5 18.09 S 9.5 TK 20.3T 77 5 3 GON Puerto de la Cubilla, Asturias 2020 5 17.93 S 10.0 TK 20.0L 42 6 1 SCH Eerbeek 2020 5 17.02 S 10.5 AQ 40.7L 72 3.5 2 BIV 2020 5 16.01 S 10.8 AQ 40.7L 72 4 3 0.1 110 BIV 2020 5 14.927 S 9.6 TA 15.5L 29 5.3 1/ DIJ Burlage 2020 5 14.924 S 10.0 TA 15.6L 36 4.5 2/ BOU Westerwijtwerd 2020 5 14.92 S 9.9 TK 20.0L 42 5 2 SCH Eerbeek 2020 5 13.99 S 10.3 AQ 40.7L 72 4 3 0.1 90 BIV 2020 5 13.949 S 9.0 TA 15.5L 29 7 2 DIJ Burlage 2020 5 13.948 S 9.9 TA 15.6L 36 4 2/ BOU Westerwijtwerd 2020 5 13.92 S 9.7 TK 20.0L 42 6 2 SCH Eerbeek 2020 5 13.915 S 10.2 TK 32.0L 60 2.5 3 LOO Genk 2020 5 11.99 S 10.3 AQ 40.7L 72 4 3 0.1 100 BIV 2020 5 11.922 S 9.2 TA 15.5L 29 4.8 2/ DIJ Burlage 2020 5 11.92 S 9.5 TK 20.0L 42 4 3 SCH Eerbeek 2020 5 9.91 S 9.2 TK 20.0L 42 6 3/ SCH Eerbeek 2020 5 2.93 S 8.8 TK 20.0L 42 8 3 SCH Eerbeek (Moonlight.) 2020 5 1.87 S 9.8 TK 40.7L 72 4 4 BIV 2020 4 26.946 M 8.6 TA 15.5L 29 5 4 DIJ Burlage 2020 4 26.90 S 8.2 TK 8.0B 15 7 5 SCH Eerbeek 2020 4 25.89 S 7.7 TK 8.0B 15 6 6 SCH Eerbeek (Comet close to 47 Cas [m=5.3]. Star of m=9.4 in coma.) 2020 4 25.86 S 9.3 TK 40.7L 72 4 4 BIV 2020 4 23.85 S 8.3 AQ 40.7L 72 4 6 BIV 2020 4 22.936 S 8.5 TK 32.0L 60 3.3 6 LOO Genk 2020 4 22.878 M 8.4 TA 8.0B 15 5 4 BOU Westerwijtwerd 2020 4 22.874 M 8.3 TA 15.5L 29 4.0 4 DIJ Burlage 2020 4 22.87 S 7.9 TK 8.0B 15 9 5 SCH Eerbeek 2020 4 22.85 S 8.8 TK 40.7L 72 4.5 5 0.1 0 BIV 2020 4 22.04 S 8.0 TK 8.0B 15 6 5 SCH Hall 2020 4 21.900 S 8.5 TK 32.0L 60 2.5 6 LOO Genk 2020 4 21.872 S 8.3 TA 8.0B 15 5 3/ BOU Westerwijtwerd 2020 4 21.870 M 8.2 TA 15.5L 29 3.4 4 DIJ Burlage 2020 4 21.11 S 8.7 TK 40.7L 72 5 5 BIV 2020 4 20.90 S 8.1 TK 8.0B 15 6 5 SCH Eerbeek 2020 4 20.883 M 8.4 TA 8.0B 15 5 4/ BOU Westerwijtwerd 2020 4 20.862 M 8.1 TA 15.5L 29 5.5 5 DIJ Burlage 2020 4 19.90 S 7.9 TK 8.0B 15 7 5 SCH Eerbeek 2020 4 19.871 M 8.1 TA 8.0B 15 5 5 BOU Westerwijtwerd 2020 4 19.864 S 8.2 TK 32.0L 60 3 6 LOO Genk 2020 4 19.854 M 8.3 TA 15.5L 29 4.6 4 DIJ Burlage 2020 4 18.872 M 7.8 TA 8.0B 15 5 5/ BOU Westerwijtwerd 2020 4 18.861 M 8.2 TA 15.5L 29 6 4/ DIJ Burlage 2020 4 18.86 S 9.1 TK 40.7L 72 5 4 BIV 2020 4 17.90 S 7.9 TK 8.0B 15 7 5 SCH Eerbeek 2020 4 17.878 M 7.8 TA 15.6L 29 4.0 6/ BOU Westerwijtwerd 2020 4 17.866 M 7.9 TA 15.5L 29 4 5 DIJ Burlage 2020 4 17.85 S 8.2 AQ 40.7L 72 4 4 BIV 2020 4 16.874 M 8.0 TA 15.6L 29 3.5 6/ BOU Westerwijtwerd (Outburst. Comet clearly brighter and more condensed than 24h ago.) 2020 4 16.851 M 8.4 TA 15.5L 29 5 5/ DIJ Burlage 2020 4 16.847 B 7.9 TK 8.0B 20 4 5 SZA Truszczyny 2020 4 15.871 M 8.8 TA 15.6L 36 3.5 4/ BOU Westerwijtwerd 2020 4 15.85 S 9.3 AQ 40.7L 72 4 4 0.1 355 BIV 2020 4 14.89 S 8.5 TK 20.0L 42 3 5/ SCH Eerbeek 2020 4 14.860 S 8.6 TK 32.0L 60 3 6 LOO Genk 2020 4 14.846 M 8.8 TA 15.5L 29 3.5 3/ DIJ Burlage 2020 4 13.85 S 9.7 AQ 40.7L 72 2.5 4 0.1 0 BIV 2020 4 12.859 M 8.7 TA 15.5L 29 4 4 DIJ Burlage 2020 4 12.858 B 9.1 TK 8.0B 20 4 4 SZA Truszczyny 2020 4 11.88 S 8.3 TK 20.0L 42 4 5 SCH Eerbeek 2020 4 11.851 M 8.9 TA 15.6L 29 3.5 4 BOU Sint Annen 2020 4 11.845 M 8.7 TA 15.5L 29 3.5 4/ DIJ Burlage 2020 4 10.86 S 8.3 TK 20.0L 42 5 5 SCH Eerbeek (Some cirrus.) 2020 4 10.834 S 8.9 TK 32.0L 60 2 6 LOO Genk 2020 4 9.89 S 8.5 TK 20.0L 42 3 6 SCH Eerbeek 2020 4 9.840 M 8.6 TA 15.5L 29 3.8 4 DIJ Burlage 2020 3 31.14 S 8.2 TK 8.0B 15 6 6 SCH Eerbeek 2020 3 31.13 S 8.3 TK 20.0L 42 5 6 SCH Eerbeek 2020 3 31.092 M 8.5 TA 15.5L 29 4.2 4 DIJ Burlage 2020 3 28.795 B 9.4 TK 20.0L 25 5 SZA Truszczyny 2020 3 26.831 S 8.6 TA 15.5L 36 3.5 3 DIJ Burlage 2020 3 26.828 S 8.8 TA 15.5L 36 4 3/ BOU Burlage, Germany (Altitude 15.2°.) 2020 3 25.774 B 9.4 TK 8.0B 20 5 SZA Truszczyny 2020 3 23.83 S 8.4 TK 20.0L 42 5 5 SCH Eerbeek (Low altitude 13°.) 2020 3 23.815 M 8.7 TA 15.6L 36 3.5 5 BOU Sint Annen (Altitude 15.3°.) 2020 3 23.810 M 8.4 TK 15.5L 42 3.5 5 DIJ Burlage 2020 3 22.82 S 8.2 TK 20.0L 42 & 4 6 SCH Eerbeek (Low altitude 14°.) 2020 3 22.819 M 8.6 TA 15.6L 36 3.5 5 BOU Sinjt Annen (Altitude 14.3°.) 2020 3 22.805 M 8.5 TK 15.5L 42 4 5 DIJ Burlage 2020 3 21.84 S 8.0 TK 20.0L 42 & 4 6 SCH Eerbeek (Low altitude 10°.) 2020 3 21.814 M 8.5 TA 15.5L 36 3.5 4 BOU Burlage, Germany (Altitude 14.6°.) 2020 3 21.813 S 8.4 TA 15.5L 36 3.5 5 DIJ Burlage 2020 3 20.816 M 8.7 TA 15.6L 36 3.8 4/ BOU Sint Annen (Altitude 14.4°.) 2020 3 20.809 S 7.9 TK 8.0B 15 3.5 5 DIJ Burlage 2020 3 16.812 M 8.8 TA 15.6L 36 3 5 BOU Sint Annen (Altitude 13.5°.) 2020 3 15.82 S 9.1 AQ 40.7L 72 3 6 BIV 2020 3 14.83 M 8.4 TK 10.0B 25 3 7 GON Alto del Castro, León (Altitude 11°.) 2020 3 13.800 S 8.4 TA 8.0B 15 4 3 BOU Sint Annen (Altitude 14.6°.) 2020 3 13.791 S 9.1 TK 15.5L 29 & 3 3/ DIJ Burlage (Altitude 16°.) 2020 3 12.85 S 8.0:TK 40.7L 72 5 5 BIV 2020 3 12.811 S 8.9 TK 8.0B 15 & 4 5 DIJ Burlage (Altitude 12°.) 2020 3 12.80 S 7.3 TK 20.0L 42 & 6 5 SCH Eerbeek (Altitude 14°.) 2020 3 12.799 M 8.5 TA 25.4J 47 3.5 4/ BOU Sint Annen (Altitude 14.5°.) 2020 2 29.784 S 9.8 TA 25.4J 58 & 3 3/ BOU Westerwijtwerd (Altitude 15°. Moonlight. Windy conditions.) 2020 2 21.79 S 10.8:AQ 40.7L 72 4 3 BIV 2020 2 19.81 S 9.6 TK 20.3T 77 4 3 GON Alto del Trichero, León (Zodiacal light. Altitude 16°.) 2020 1 31.40 S 11.4 AU 40.0L 144 1.4 3/ YOS Mt. Hanadate, Ibaraki (I could see another fragment of C/1988 A1 (Liller), in addition to C/1996 Q1 (Tabur) and C/2015 F3 (SWAN). Very bright. Easy to find because it was located near Venus.)