|
* * * * * 3I/ATLAS * * * * *
Year Mn Day MM Mag Ref Scope Pwr coma DC tail p.a. Obs Site 2026 1 25.65 M 12.6 AQ 40.0L 108 1.2 4 WYA Walcha, NSW (Stellar central condensation visible in good seeing. Semi-opaque outer coma.) 2026 1 21.63 M 13.0 AQ 40.0L 108 1.2 5 WYA Walcha, NSW (Close to star but resolvable. Opaque inner coma, transparent outer coma.) 2026 1 20.47 M 12.8 AQ 40.0L 108 1.2 4 WYA Walcha, NSW (Transparent outer coma, opaque inner.) 2025 12 30.207 S 11.1 AQ 15.5L 50 2.2 3/ DIJ Burlage 2025 12 29.64 M 11.7 AQ 25.0L 74 1.8 4 WYA Walcha, NSW (Close to star. Diffuse coma, opaque centre.) 2025 12 28.194 S 11.4 AQ 15.5L 62 2 3 DIJ Burlage 2025 12 27.03 S 12.0 TK 35.6T 98 & 1 3 SCH Bussloo (Comet 17’ from star 31 Leo [magn. 4.4].) 2025 12 26.973 S 11.3 AQ 15.5L 62 2 3 DIJ Burlage 2025 12 24.988 S 11.5 AQ 30.5T 73 2.2 4 DIJ Burlage 2025 12 24.986 S 11.6 AQ 30.5T 73 1.8 3 BOU Burlage, Germany 2025 12 18.194 S 11.1 AQ 15.5L 62 1.6 2 DIJ Burlage 2025 12 17.228 S 11.0 AQ 15.5L 62 1.7 3 DIJ Burlage 2025 12 1.211 S 10.4 TK 15.5L 50 2.3 4 DIJ Burlage 2025 12 1.18 S 10.0 TK 20.0L 42 & 3 3 SCH Eerbeek 2025 11 22.30 S 9.7 TK 10.0B 20 3 3/ GOI Araçatuba 2025 11 22.19 S 10.0 TK 20.0L 42 & 2 6 SCH Eerbeek 2025 11 21.206 M 9.8 TA 25.4J 58 2.7 4 BOU Westerwijtwerd 2025 11 21.184 S 9.6 TK 15.5L 50 3.4 4/ DIJ Burlage (Altitude comet 18°.) 2025 11 20.81 S 9.3 TJ 40.0L 36 3.5 5 YOS Mt. Tsukuba, Ibaraki (I could see an interstellar comet for the first time. Large and bright. I looks like an ordinary comet visually.) 2025 11 20.31 S 9.8 TK 22.0L 60 2 4 GOI Araçatuba 2025 11 20.212 M 9.8 TA 25.4J 58 2.6 4 BOU Westerwijtwerd 2025 11 20.19 S 9.6 TK 20.0L 42 4 5 SCH Eerbeek 2025 11 19.31 S 9.7 TK 22.0L 60 2 4 GOI Araçatuba 2025 11 18.24 S 9.3 TK 20.3T 77 4 5 GON Cueto Rosales, León 2025 11 17.217 S 9.7 TK 15.5L 50 3 3/ DIJ Burlage (Also faintly visible in 15x80B.) 2025 9 23.40 M 12.1 AQ 40.0L 108 1.1 4 WYA Walcha, NSW (Altitude 14.7°. Enhances slightly in Swan Band filter. Very diffuse coma, moderately condensed.) 2025 9 16.40 M 14.5 AQ 40.0L 182 0.4 5/ WYA Walcha, NSW (Stellar central condensation visible in periods of good seeing. Altitude 25.4°.) 2025 9 15.39 M 14.7 AQ 40.0L 261 0.5 6 WYA Walcha, NSW (No enhancement in Swan Band filter. Visible at 182x. Central condensation m2 approximately 15.1 mag.)