Weekly Information about Bright Comets (2024 Aug. 3: South)

Japanese version Home page	Updated on August 4, 2024
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere. Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

13P/Olbers It returned for the first time in 68 years. It brightened up to 6.2 mag in early summer (July 1, Virgilio Gonano). Now it is 6.8 mag (Aug. 1, Carlos Labordena). It will fade out rapidly after this. It will be unobservable in October in the Southern Hemisphere, or in November in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 11 26.72 33 55.0 1.921 1.283 37 7.2 18:46 (133, 0) Aug. 10 11 57.62 30 29.7 1.954 1.329 38 7.5 18:50 (130, 3) C/2023 A3 ( Tsuchinshan-ATLAS ) It will approach to Sun down to 0.4 a.u. in late September, and it is expected to brighten up to 2 mag. The brightness evolution slowed down since May. Now it is 8.9 mag (Aug. 1, Chris Wyatt). It will brighten rapidly after this. In the Northern Hemisphere, it is not observable now, but it will appear in October. In the Southern Hemisphere, it will be unobservable soon. But it will be observable again in September. At the high light, in the Northern Hemisphere, it will be observable in good condition after the perihelion passage. In the Southern Hemisphere, it will be observable in the low sky before and after the perihelion passage. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 10 54.78 0 21.2 2.029 1.324 34 8.5 18:46 (102, 16) Aug. 10 10 52.06 -0 24.6 1.997 1.198 27 8.1 18:50 ( 96, 9) 12P/Pons-Brooks It returns for the first time in 70 years. It brightened up to 3.7 mag in early April (Apr. 6, Jose Guilherme Aguiar). Now it is 9.3 mag (Aug. 1, Chris Wyatt). It will fade out rapidly after this. In the Northern Hemisphere, it is not observable now. It locates somewhat low in the Southern Hemisphere. But it will become high in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 10 29.57 -45 30.4 2.063 1.905 66 9.3 18:46 ( 54, 33) Aug. 10 10 59.32 -46 18.4 2.184 1.996 65 9.6 18:50 ( 53, 33) 2020 TS2 It approaches to Sun down to 0.12 a.u. on Aug. 4. It will fade out rapidly after this. It will be fainter than 18 mag in September. Now it is not observable. It will appear soon in the Southern Hemisphere. In the Northern Hemisphere, it will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 9.65 17 44.2 1.136 0.142 3 11.3 18:46 (102,-14) Aug. 10 9 39.65 15 0.5 0.757 0.267 4 13.2 18:50 ( 98,-14) C/2023 R2 ( PanSTARRS ) It will turn to fade out rapidly after the peak. Now it is not observable. It will appear in September in the Northern Hemisphere. In the Southern Hemisphere, it will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 27.20 5 45.8 1.868 0.920 14 11.5 18:46 ( 94, -4) Aug. 10 10 2.25 5 16.3 1.850 0.906 14 11.4 18:50 ( 94, -4) C/2023 V4 ( Camarasa-Duszanowicz ) It brightened very rapidly up to 10.0 mag in June (June 11, Virgilio Gonano). Now it is 13.0 mag (July 31, Osamu Miyazaki). It will fade out rapidly after this. It will be fainter than 18 mag in November. It will be unobservable soon in the Southern Hemisphere, or in November in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 12 14.62 44 30.3 1.956 1.516 49 12.3 18:46 (147, -1) Aug. 10 12 41.78 39 50.8 2.036 1.588 50 12.7 18:50 (143, 2) C/2022 E2 ( ATLAS ) Now it is 12.8 mag (May 31, Hiroshi Abe). It stays 12 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 7 23.17 39 58.1 4.533 3.686 29 12.6 5:25 (230,-14) Aug. 10 7 26.50 40 49.2 4.462 3.680 35 12.5 5:19 (228,-11) 154P/Brewington Now it is 13.1 mag (July 23, Ken-ichi Kadota). It will fade out rapidly after this. In the Northern Hemisphere, it will be getting higher gradually. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 5 51.65 36 14.5 2.225 1.655 44 12.7 5:25 (221, 2) Aug. 10 6 14.57 36 36.1 2.220 1.683 46 13.0 5:19 (221, 2) C/2023 C2 ( ATLAS ) Now it is 13.3 mag (July 13, Thomas Lehmann). It stays 13 mag for a while. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 15 48.26 -58 33.8 2.088 2.642 112 12.8 19:00 ( 0, 67) Aug. 10 15 57.74 -55 54.2 2.109 2.609 108 12.8 18:50 ( 3, 69) 46P/Wirtanen The condition is bad in this apparition. It must have brightened up to 10 mag in early summer, however, it is not observable at all. Fading rapidly. It will be fainter than 18 mag in October. It will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 44.24 20 25.8 2.416 1.441 12 13.4 18:46 (108, -9) Aug. 10 10 6.24 18 49.9 2.478 1.499 11 13.9 18:50 (105,-10) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 13.5 mag (July 31, Osamu Miyazaki). Fading gradually. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 19 31.69 60 50.0 2.314 2.683 99 13.6 22:41 (180, -6) Aug. 10 19 26.11 59 34.7 2.372 2.757 101 13.8 22:08 (180, -5) C/2021 G2 ( ATLAS ) Now it is 14.3 mag (July 23, ATLAS Chile). It stays 14 mag for a while. It will be unobservable soon in the Northern Hemisphere, or in October in the Southern Hemisphere. But it will be observable again in November in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 12 33.13 -19 44.3 5.323 4.991 65 14.1 18:46 ( 99, 47) Aug. 10 12 39.16 -19 26.9 5.413 4.988 60 14.1 18:50 ( 95, 42) 37P/Forbes Now it is 16.0 mag (July 23, ATLAS Chile). It stays 14 mag for a while. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 13 41.21 -20 12.9 1.614 1.753 80 14.3 18:46 (113, 61) Aug. 10 13 56.09 -20 58.6 1.647 1.728 76 14.2 18:50 (107, 58) 29P/Schwassmann-Wachmann 1 Now it is not observable. It will appear in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 7.87 16 3.6 7.233 6.221 3 14.3 18:46 (100,-14) Aug. 10 9 13.01 15 37.0 7.236 6.223 1 14.3 5:19 (262,-17) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 14.7 mag (July 25, ATLAS Chile). Fading slowly. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 0 2.87 -65 34.1 4.553 5.172 122 14.4 3:17 ( 0, 60) Aug. 10 23 48.99 -67 7.8 4.607 5.229 123 14.5 2:36 ( 0, 58) 146P/Shoemaker-LINEAR Now it is 15.1 mag (July 28, ATLAS Chile). It will fade out rapidly after this. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 3 53.70 2 10.3 1.292 1.420 74 14.7 5:25 (218, 46) Aug. 10 4 11.67 4 30.0 1.263 1.421 76 14.7 5:19 (215, 44) 130P/McNaught-Hughes Now it is 14.4 mag (July 18, Taras Prystavski). Fading gradually. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 2 21.19 7 0.9 1.684 2.047 95 14.9 5:25 (183, 48) Aug. 10 2 28.29 7 29.3 1.637 2.073 100 14.9 5:14 (180, 47) C/2022 N2 ( PanSTARRS ) It is expected to brighten up to 13 mag in 2025 autumn, and it will be observable in good condition. Now it is 15.2 mag (July 17, Taras Prystavski). It stays 15 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 23 1.93 -3 52.3 4.065 4.936 145 15.0 2:16 (180, 59) Aug. 10 23 0.08 -3 56.0 3.976 4.899 152 14.9 1:46 (180, 59) 192P/Shoemaker-Levy 1 Now it is 16.2 mag (July 28, ATLAS-MLO, Mauna Loa). It will fade out rapidly after this. It will be fainter than 18 mag in November. In the Northern Hemisphere, it will be getting higher gradually. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 5 14.30 23 4.2 2.139 1.701 51 15.0 5:25 (224, 18) Aug. 10 5 30.50 24 35.5 2.131 1.744 54 15.1 5:19 (222, 17) C/2022 S4 ( Lemmon ) Now it is 16.5 mag (June 20, Thomas Lehmann). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now. The brightness evolution is slower than originally expected. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 7 13.01 -59 50.6 2.756 2.766 79 15.0 5:25 (323, 37) Aug. 10 7 47.49 -61 35.7 2.774 2.771 79 15.0 5:19 (325, 36) C/2022 QE78 ( ATLAS ) Now it is 15.9 mag (Mar. 26, ATLAS Chile). It stays 15 mag for a while. It will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 9.01 3 23.1 6.926 6.217 42 15.3 5:25 (248, 23) Aug. 10 6 13.86 3 25.6 6.836 6.193 47 15.3 5:19 (245, 26) C/2017 K2 ( PanSTARRS ) It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 14.5 mag (Apr. 27, Hiroshi Abe). It stays 15 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. It locates somewhat low in the Southern Hemisphere. But it will become high in autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 14.28 16 37.1 7.211 6.440 37 15.3 5:25 (239, 13) Aug. 10 6 17.12 16 48.1 7.191 6.497 43 15.3 5:19 (235, 16) C/2022 L2 ( ATLAS ) Now it is 15.6 mag (July 24, Thomas Lehmann). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in October. It locates somewhat low in the Southern Hemisphere. But it will become high in autumn. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 47.07 -22 50.9 3.749 3.077 42 15.3 18:46 ( 72, 15) Aug. 10 9 48.51 -23 14.5 3.828 3.112 39 15.4 18:50 ( 68, 10) 32P/Comas Sola Now it is 14.7 mag (May 31, Hiroshi Abe). Fading slowly. Now it is not observable. It will appear in October in the Northern Hemisphere, or in December in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 9 57.57 19 45.5 3.188 2.226 15 15.4 18:46 (109, -7) Aug. 10 10 12.62 18 22.4 3.229 2.252 12 15.5 18:50 (106, -9) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.9 mag (July 25, Hidetaka Sato). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. In the Northern Hemisphere, it is not observable until 2030. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 4 13.72 -64 29.7 15.939 16.102 97 15.6 5:25 (338, 55) Aug. 10 4 16.14 -64 57.6 15.901 16.078 98 15.6 5:19 (341, 56) 30P/Reinmuth 1 Now it is 16.5 mag (Apr. 3, Taras Prystavski). It stays 16 mag for a while. Now it is not observable. It will appear in September in the Northern Hemisphere, or in November in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 8 24.27 19 32.3 2.819 1.817 7 15.6 5:25 (255,-13) Aug. 10 8 43.50 18 42.1 2.807 1.813 9 15.6 5:19 (256,-12) 479P/2023 WM26 ( Elenin ) First return of a new periodic comet which was discovered in 2011, half a year after the perihelion passage. It brightened very rapidly up to 10.7 mag in spring (Apr. 28, Marco Goiato). Now it is 15.6 mag (June 19, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag in September. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 15 6.25 -28 24.6 1.194 1.709 101 15.7 18:46 (136, 81) Aug. 10 15 27.80 -28 1.1 1.299 1.768 98 16.3 18:50 (128, 79) C/2019 L3 ( ATLAS ) It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 16.3 mag (July 16, ATLAS Chile). It stays 16 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 11 9.06 -46 13.1 8.693 8.413 70 15.7 18:46 ( 56, 40) Aug. 10 11 13.77 -46 14.5 8.803 8.458 66 15.8 18:50 ( 54, 35) 299P/Catalina-PanSTARRS It brightened very rapidly in outburst in late May. Now it is 15.6 mag (July 11, Giuseppe Pappa). Fading slowly. It will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 15 32.55 -22 52.8 2.768 3.193 105 15.8 18:46 (177, 78) Aug. 10 15 37.04 -22 44.2 2.866 3.199 99 15.9 18:50 (150, 76) P/2024 FG9 ( Nanshan-Hahn ) Alan Hale reported its cometary appearance. Now it is 15.1 mag (July 4, Ken-ichi Kadota). It will fade out rapidly after this. It will be fainter than 18 mag in October. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be unobservable in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 10 55.72 5 36.4 2.521 1.749 32 15.9 18:46 (106, 13) Aug. 10 11 13.37 3 48.0 2.576 1.776 30 16.0 18:50 (103, 12) C/2019 U5 ( PanSTARRS ) Now it is 14.9 mag (June 5, Thomas Lehmann). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in September. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 7 46.46 -33 35.3 6.129 5.585 53 15.9 5:25 (296, 23) Aug. 10 7 48.79 -34 11.8 6.159 5.628 54 16.0 5:19 (294, 27) C/2020 K1 ( PanSTARRS ) It brightened up to 12.1 mag in 2023 spring (May 20, 2023, Jose Guilherme de S. Aguiar). Now it is 16.3 mag (Aug. 2, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in September. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 40.11 -35 30.7 5.593 5.189 61 16.3 5:25 (291, 37) Aug. 10 6 44.57 -35 37.6 5.618 5.237 63 16.3 5:19 (290, 40) C/2024 G3 ( ATLAS ) It approaches to Sun down to 0.09 a.u. on Jan. 13, 2025. According to the calculation, it will brighten up to -1 mag. But probably, it will be disintegrated. At the high light, it may be observable after the perihelion passage only in the Southern Hemisphere. Now it is 16.5 mag (July 11, Giuseppe Pappa). It will brighten rapidly after this. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 12 57.11 -60 43.9 2.996 3.198 92 16.4 18:46 ( 32, 54) Aug. 10 13 1.99 -58 44.3 2.988 3.104 86 16.3 18:50 ( 37, 52) 89P/Russell 2 Now it is 16.5 mag (July 27, ATLAS Chile). Fading gradually. It will be fainter than 18 mag in November. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 23 57.75 -18 54.6 1.574 2.411 136 16.4 3:11 (180, 74) Aug. 10 23 55.82 -19 18.3 1.545 2.431 142 16.4 2:42 (180, 74) C/2023 F3 ( ATLAS ) Now it is 16.9 mag (July 30, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after October. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 13 26.46 -42 13.7 5.335 5.373 86 16.4 18:46 ( 64, 64) Aug. 10 13 24.73 -41 31.2 5.437 5.359 80 16.5 18:50 ( 66, 58) C/2023 Q1 ( PanSTARRS ) Now it is 16.5 mag (July 26, ATLAS-MLO, Mauna Loa). Brightening slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 4 4.46 44 39.1 3.150 2.876 65 16.6 5:25 (200, 6) Aug. 10 4 18.14 46 29.5 3.049 2.844 68 16.5 5:19 (198, 5) C/2019 T4 ( ATLAS ) It brightened up to 11.1 mag in early 2022 (Mar. 31, 2022, F. Kugel, J.-G. Bosch, J. Nicolas). Now it is 16.1 mag (Aug. 1, ATLAS-MLO, Mauna Loa). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in October. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 17 13.38 31 36.7 7.085 7.461 107 16.5 20:24 (180, 23) Aug. 10 17 12.66 31 6.9 7.183 7.502 104 16.6 19:55 (180, 24) C/2022 R6 ( PanSTARRS ) Now it is 16.6 mag (Aug. 2, ATLAS South Africa). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 30.62 -24 9.8 7.605 7.061 54 16.6 5:25 (278, 34) Aug. 10 6 35.61 -24 21.7 7.551 7.044 56 16.6 5:19 (276, 37) 472P/2023 RL75 ( NEAT-LINEAR ) Now it is 16.4 mag (July 25, Hidetaka Sato). Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 5 23.97 16 54.5 3.958 3.392 49 16.7 5:25 (230, 21) Aug. 10 5 33.25 16 44.5 3.885 3.394 54 16.7 5:19 (227, 23) C/2019 E3 ( ATLAS ) Very far object. Now it is 16.6 mag (July 17, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 3 1.10 -66 11.6 10.095 10.407 105 16.7 5:25 (351, 58) Aug. 10 2 58.82 -66 42.7 10.082 10.413 106 16.7 5:19 (355, 58) C/2024 A1 ( ATLAS ) Now it is 17.3 mag (May 6, ATLAS Chile). Brightening slowly. In the Northern Hemisphere, it is not observable now, but it will appear in September. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 7 35.06 -26 46.5 5.340 4.724 48 16.9 5:25 (288, 22) Aug. 10 7 40.56 -26 27.2 5.302 4.691 48 16.8 5:19 (286, 25) P/2023 S1 Now it is 17.5 mag (Mar. 9, Toshihiko Ikemura, Hirohisa Sato). Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. It stays extremely low in the Southern Hemisphere. But it will become high in winter. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 35.47 28 45.9 3.673 2.881 33 17.0 5:25 (233, 1) Aug. 10 6 48.02 28 30.8 3.604 2.865 37 16.9 5:19 (232, 3) 65P/Gunn Now it is 16.4 mag (July 23, ATLAS-MLO, Mauna Loa). It stays 17 mag for a while. It will be unobservable in September in the Northern Hemisphere, or in October in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 13 3.77 -2 10.9 3.599 3.297 64 17.0 18:46 (124, 42) Aug. 10 13 10.34 -3 7.9 3.671 3.283 59 17.0 18:50 (118, 38) 328P/LONEOS-Tucker Now it is 16.8 mag (July 26, ATLAS-HKO, Haleakala). Fading gradually. It will be fainter than 18 mag in October. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 2 44.40 27 10.4 1.686 1.874 83 17.0 5:25 (188, 27) Aug. 10 2 57.24 29 29.0 1.631 1.877 87 17.0 5:19 (186, 25) C/2021 X1 ( Maury-Attard ) It brightened up to 14 mag in early 2023 and 2023 autumn. Now it is 17.3 mag (July 13, ATLAS-HKO, Haleakala). Fading slowly. It will be fainter than 18 mag in October. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 21 32.04 22 45.5 4.300 5.105 138 17.0 0:46 (180, 32) Aug. 10 21 22.11 22 29.1 4.315 5.151 141 17.1 0:09 (180, 32) C/2024 M1 ( ATLAS ) It is expected to brighten up to 13.5 mag, and it will be observable in good condition in winter. Now it is 17.4 mag (Aug. 2, ATLAS South Africa). It will brighten rapidly after this. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 5 52.30 -32 55.0 2.379 2.180 66 17.3 5:25 (284, 45) Aug. 10 6 2.52 -31 53.0 2.310 2.129 66 17.1 5:19 (281, 47) 362P/(457175) 2008 GO98 Now it is 16.4 mag (May 4, Toshiyuki Takahashi). It stays 17 mag for a while. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 15 14.57 -3 3.3 2.577 2.867 96 17.2 18:46 (170, 58) Aug. 10 15 19.99 -3 39.9 2.665 2.868 91 17.2 18:50 (158, 57) C/2022 U1 ( Leonard ) Now it is 17.2 mag (July 21, Ken-ichi Kadota). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 20 39.97 47 36.3 3.816 4.341 114 17.3 23:48 (180, 7) Aug. 10 20 24.37 46 24.1 3.804 4.356 116 17.3 23:05 (180, 9) C/2024 L5 ( ATLAS ) Now it is 16.9 mag (July 31, ATLAS South Africa). It stays 17 mag for a while. It will be unobservable in September in the Northern Hemisphere, or in November in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 15 31.22 -33 16.7 3.576 3.997 107 17.3 18:46 (152, 88) Aug. 10 15 23.51 -32 27.6 3.677 3.965 99 17.3 18:50 (102, 81) C/2023 R1 ( PanSTARRS ) Now it is 17.3 mag (July 30, ATLAS-HKO, Haleakala). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 0 1.45 31 54.8 5.902 6.369 113 17.4 3:15 (180, 23) Aug. 10 23 55.78 32 3.5 5.763 6.324 119 17.3 2:42 (180, 23) 50P/Arend It stays 18 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will appear in October. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 34.20 37 9.9 2.786 2.058 36 17.4 5:25 (227, -4) Aug. 10 6 53.46 37 9.0 2.770 2.080 38 17.4 5:19 (226, -4) 253P/PanSTARRS Now it is 18.8 mag (July 29, ATLAS-HKO, Haleakala). It stays 17 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 0 44.53 2 5.8 1.421 2.116 119 17.6 3:58 (180, 53) Aug. 10 0 49.72 2 9.6 1.347 2.102 125 17.5 3:35 (180, 53) 125P/Spacewatch Now it is 17.2 mag (July 29, ATLAS-HKO, Haleakala). It will fade out rapidly after this. It will be fainter than 18 mag soon. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 21 35.88 -8 39.2 1.066 2.066 166 17.6 0:50 (180, 63) Aug. 10 21 29.98 -10 0.6 1.095 2.106 173 17.8 0:17 (180, 65) C/2021 S4 ( Tsuchinshan ) Now it is 17.6 mag (Apr. 11, Mt. Lemmon Survey). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will appear in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 6 48.19 38 36.0 7.644 6.831 34 17.6 5:25 (227, -7) Aug. 10 6 54.42 38 37.0 7.595 6.841 39 17.6 5:19 (225, -5) C/2024 J3 ( ATLAS ) Now it is 17.1 mag (July 30, ATLAS South Africa). It stays 18 mag for a while. In the Northern Hemisphere, it will be unobservable in December. In the Southern Hemisphere, it stays observable in good condition. It is expected to brighten up to 13 mag in 2026, and it will be observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it locates very low at the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 18 38.05 -41 2.7 6.971 7.802 142 17.6 21:49 ( 0, 84) Aug. 10 18 34.17 -40 35.1 6.994 7.759 136 17.6 21:17 ( 0, 84) P/2024 N5 ( Siding Spring ) First return of a new periodic comet which brightened up to 16 mag in 2012. It is expected to brighten rapidly up to 14.5 mag in autumn. Now it is 18.5 mag (July 25, Hidetaka Sato). It will brighten rapidly after this. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 3 40.97 -5 0.9 1.886 1.983 80 18.0 5:25 (219, 54) Aug. 10 3 51.35 -3 24.1 1.794 1.956 83 17.6 5:19 (214, 54) 338P/McNaught Now it is 18.0 mag (July 8, Hidetaka Sato). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 2 28.57 16 59.3 2.041 2.288 90 17.8 5:25 (185, 38) Aug. 10 2 34.92 18 49.5 1.961 2.288 95 17.7 5:19 (180, 36) 208P/McMillan Now it is 18.8 mag (July 6, Taras Prystavski). It stays 18 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 0 2.22 -5 32.1 1.736 2.532 132 17.9 3:16 (180, 60) Aug. 10 0 2.25 -5 34.9 1.677 2.530 138 17.9 2:48 (180, 60) 117P/Helin-Roman-Alu 1 It stays 18 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 3 27.91 16 4.9 4.457 4.346 77 17.9 5:25 (203, 36) Aug. 10 3 31.46 16 20.0 4.366 4.360 82 17.9 5:19 (197, 37) 242P/Spahr It stays 18 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 3 53.76 -1 50.7 4.145 4.024 76 18.0 5:25 (221, 49) Aug. 10 3 59.35 -2 27.5 4.048 4.019 81 17.9 5:19 (216, 52) P/2010 WK ( LINEAR ) First return of a new periodic comet which brightened up to 15 mag in 2010. It has not been observed yet in this apparition. Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 5 30.36 29 47.5 2.307 1.787 47 18.4 5:25 (222, 10) Aug. 10 5 51.17 30 26.8 2.273 1.795 49 18.3 5:19 (222, 10) P/2003 T12 ( SOHO ) It was observed at three apparitions in 2003, 2012 and 2016. In this apparition, it must have brightened up to 15.5 mag in early summer. But it was not observed due to bad condition. Fading rapidly. Now it is not observable. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Aug. 3 7 59.21 15 42.9 1.777 0.821 13 19.6 5:25 (255, -6) Aug. 10 8 28.88 14 12.4 1.871 0.908 12 20.8 5:19 (258, -7)