○ 光度等観測報告 (2024年 7月) 2024 UT m1 Dia DC Tail p.a. Trans. Seeing Instru. Observer Note P/2020 WJ5 (ATLAS) July 7.60 18.8 0.15′- - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2021 S3 (PANSTARRS) July 4.64 12.8 1.4′ - 9.0′ 240° 3/5 3/5 0.4m-RC* 嶋邦博 ①②③ C/2021 X1 (Maury-Attard) July 4.68 17.1 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2022 N2 (PANSTARRS) July 4.72 16.0 0.2′ - 2.2′ 250° 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2022 T1 (Lemmon) July 4.56 18.5 0.2′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2022 U1 (Leonard) July 5.71 17.2 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2023 A3 (Tsuchinshan-ATLAS) July 4.50 8.8 1.6′ - 16.0′ 100° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 5.48 9.4 1.6 - 15.0 100 3/5 3/5 0.4m-RC* 嶋邦博 ①② 7.49 9.4 1.6 - 11.0 100 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2023 Q2 (PANSTARRS) July 5.63 18.6 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2023 V1 (Lemmon) July 5.72 20.0 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 C4 (ATLAS) July 7.51 20.4 0.15′- - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 E1 (Wierzchos) July 4.61 19.3 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 F2 (PANSTARRS) July 7.59 19.4 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 G1 (Wierzchos) July 4.59 19.6 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 G6 (ATLAS) July 7.56 17.6 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 J2 (ATLAS) July 4.60 19.1 0.2′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 J3 (ATLAS) July 4.66 18.0 0.15′- - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 J4 (Lemmon) July 5.62 20.2 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② C/2024 L5 (ATLAS) = PCCP A117uUD July 7.55 17.8 0.15′- - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 13P/Olbers July 4.48 6.9 7.5′ - >12.0′ 55° 3/5 3/5 0.4m-RC* 嶋邦博 ①②④ 5.47 7.2 6.0 - >16.5 55 3/5 3/5 0.4m-RC* 嶋邦博 ①②④ 7.48 6.2 7.0 - >17.0 60 3/5 3/5 0.4m-RC* 嶋邦博 ①②④ 37P/Forbes July 4.52 15.6 0.15 - 0.2′ 120° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 48P/Johnson July 4.57 19.5 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 49P/Arend-Rigaux July 4.73 18.8 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 65P/Gunn July 4.53 16.2 0.15′- 0.2′ 30° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 117P/Helin-Roman-Alu July 5.75 18.4 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 130P/McNaught-Hughes July 4.74 14.3 0.3′ - 5.5′ 250° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 5.73 14.0 0.3 - 5.5 245 3/5 3/5 0.4m-RC* 嶋邦博 ①② 133P/Elst-Pizarro July 5.71 19.9 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 144P/Kushida July 4.49 17.0 0.2′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 146P/Shoemaker-LINEAR July 4.75 13.3 0.2′ - 2.5′ 240° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 154P/Brewington July 4.78 16.3 0.2′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①②⑤ 299P/Catalina-PANSTARRS July 4.55 15.4 0.3′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 302P/Lemmon-PANSTARRS July 5.65 18.1 0.1′ - - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② 328P/LONEOS-Tucker July 5.74 17.1 0.15′- 0.3′ 230° 3/5 3/5 0.4m-RC* 嶋邦博 ①② 2024 MK July 4.71 17.3 0.15′- - - 3/5 3/5 0.4m-RC* 嶋邦博 ①② * 40-cm F8.0 (レデューサー使用 F6.5) リッチークレティアン反射＋FLI ML8300 (2x2 bin, -5℃)。 ① 観測地:長野県富士見町 五藤光学八ヶ岳観測所。②光度、コマと尾の形状確認は10～30×60秒露出 スタックから。③ faint tail ④ tail over frame ⑤ uncertain in dawn