Weekly Information about Bright Comets (2024 June 15: North)

Japanese version Home page	Updated on June 17, 2024
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern 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. Now it is 6.3 mag (June 13, Virgilio Gonano). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now, but it will appear in August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 7 12.48 40 48.4 2.010 1.198 27 7.2 21:02 (134, 9) June 22 7 46.50 41 54.1 1.974 1.182 28 7.2 21:04 (135, 10) 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 7.0 mag (June 15, Marco Goiato). Fading rapidly. 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) June 15 6 42.98 -27 30.5 1.564 1.259 53 7.3 21:02 ( 80,-38) June 22 7 13.39 -31 30.0 1.591 1.351 57 7.8 21:04 ( 75,-39) 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 0 mag. Now it is 10.3 mag (June 11, Chris Wyatt). It will brighten rapidly after this. It will be getting lower gradually after this, and it will be unobservable in July in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in September in the Southern Hemisphere. 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. It is fainter than this ephemeris recently. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 11 36.72 3 1.9 1.875 2.123 89 9.1 21:02 ( 63, 37) June 22 11 26.66 3 0.4 1.919 2.016 80 9.0 21:04 ( 71, 29) 46P/Wirtanen The condition is bad in this apparition. It brightens up to 10 mag in early summer, however, it is not observable at all. It will fade out rapidly after this. 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) June 15 6 30.02 26 4.0 2.082 1.115 12 10.4 21:02 (129, -8) June 22 7 1.51 26 14.1 2.112 1.149 13 10.7 21:04 (129, -7) C/2023 V4 ( Camarasa-Duszanowicz ) It brightened very rapidly. Now it is 10.7 mag (June 13, Virgilio Gonano). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now, but it will appear in August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 6 24.34 55 41.7 1.848 1.150 33 11.3 21:02 (151, 13) June 22 7 15.69 58 10.7 1.819 1.180 37 11.4 21:04 (151, 17) 154P/Brewington Now it is 12.0 mag (June 13, Ken-ichi Kadota). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. But it will become high in autumn. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 3 6.52 26 43.6 2.295 1.553 33 11.4 2:58 (243, 9) June 22 3 29.18 28 48.2 2.278 1.556 34 11.4 3:00 (242, 11) 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. Now it is 12.6 mag (June 11, Thomas Lehmann). It will fade out rapidly after this. It will be fainter than 18 mag in September. 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) June 15 11 46.11 -27 30.4 0.703 1.360 103 12.1 21:02 ( 38, 16) June 22 12 19.15 -28 25.8 0.744 1.399 104 12.5 21:04 ( 37, 15) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 12.2 mag (June 5, 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) June 15 20 30.15 60 12.6 1.930 2.168 89 12.3 2:56 (180, 65) June 22 20 23.79 61 27.1 1.987 2.240 90 12.5 2:22 (180, 64) 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 unobservable in July. But it will be observable again in July. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 6 59.29 35 36.1 4.677 3.756 22 12.7 21:02 (132, 3) June 22 7 2.34 36 6.7 4.697 3.743 17 12.7 21:04 (136, 0) C/2023 C2 ( ATLAS ) It is expected to brighten up to 12.5 mag in summer. Now it is 13.5 mag (June 11, Thomas Lehmann). It stays 13 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in August. In the Southern Hemisphere, it stays observable in good condition. Around the high light, it is observable in good condition in the Southern Hemisphere, but it locates very low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 15 32.89 -74 36.7 2.195 2.913 126 13.4 21:57 ( 0,-20) June 22 15 26.65 -72 54.3 2.152 2.871 126 13.2 21:24 ( 0,-18) C/2023 R2 ( PanSTARRS ) Brightening slowly. 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. It brightens up to 11 mag in August. But it is not observable around the high light. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 6 0.40 5 47.5 2.278 1.355 18 13.6 21:02 (120,-27) June 22 6 24.56 6 8.5 2.199 1.272 18 13.3 21:04 (121,-28) C/2021 G2 ( ATLAS ) Now it is 13.9 mag (June 6, Thomas Lehmann). It stays 14 mag for a while. It will be unobservable in August 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) June 15 12 0.51 -23 57.6 4.669 5.026 104 13.9 21:02 ( 38, 20) June 22 12 3.90 -23 6.1 4.757 5.020 99 13.9 21:04 ( 44, 17) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 13.3 mag (May 20, Thomas Lehmann). 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) June 15 0 40.01 -52 19.9 4.512 4.775 98 14.1 2:58 (326,-13) June 22 0 39.51 -54 9.9 4.488 4.832 103 14.1 3:00 (331,-11) 29P/Schwassmann-Wachmann 1 Now it is 15.7 mag (May 28, ATLAS-HKO, Haleakala). It will be unobservable in July. But it will be observable again in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 8 33.30 18 48.8 6.928 6.209 41 14.2 21:02 (106, 10) June 22 8 37.89 18 28.0 7.000 6.211 36 14.2 21:04 (109, 5) 130P/McNaught-Hughes Now it is 14.5 mag (June 7, Ken-ichi Kadota). It stays 15 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 1 5.00 0 44.5 2.009 1.897 68 14.6 2:58 (282, 18) June 22 1 18.09 1 55.8 1.965 1.914 72 14.6 3:00 (284, 22) C/2022 L2 ( ATLAS ) Now it is 14.1 mag (June 3, Thomas Lehmann). It stays 15 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in October. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after August. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 9 47.37 -23 58.0 2.911 2.868 77 14.6 21:02 ( 61, -1) June 22 9 45.23 -23 18.1 3.054 2.894 71 14.7 21:04 ( 66, -6) 32P/Comas Sola Now it is 14.7 mag (May 31, Hiroshi Abe). Fading slowly. It will be unobservable in July. But it will be observable again in October in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 8 1.09 27 43.9 2.857 2.085 33 14.7 21:02 (118, 9) June 22 8 18.85 26 51.4 2.908 2.100 30 14.8 21:04 (118, 6) P/2024 FG9 ( Nanshan-Hahn ) Alan Hale reported its cometary appearance. Now it is 14.7 mag (June 12, Ken-ichi Kadota). Fading gradually. It will be unobservable in July in the Northern Hemisphere, or in September in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 8 41.23 16 58.9 2.181 1.616 44 14.9 21:02 (103, 10) June 22 9 1.58 15 36.9 2.223 1.627 42 15.0 21:04 (103, 8) 144P/Kushida It brightened up to 8.9 mag from January to March (Feb. 13, Chris Wyatt). Now it is 15.1 mag (June 5, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag in August. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 10 13.86 7 26.9 2.213 2.072 68 15.0 21:02 ( 82, 24) June 22 10 27.89 6 16.0 2.328 2.122 65 15.4 21:04 ( 83, 20) 192P/Shoemaker-Levy 1 Now it is 16.7 mag (June 7, Taras Prystavski). Fading slowly. In the Northern Hemisphere, it will be unobservable soon. But it will be observable again in June. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 3 9.71 8 51.9 2.162 1.489 37 15.1 2:58 (257, -2) June 22 3 28.47 11 18.6 2.160 1.507 38 15.0 3:00 (257, 1) 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. Now it is not observable. It will appear in July. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 5 48.78 14 53.5 7.038 6.037 9 15.0 21:02 (129,-23) June 22 5 52.79 15 12.1 7.098 6.095 8 15.1 3:00 (230,-23) C/2022 S4 ( Lemmon ) Now it is 16.1 mag (Feb. 22, ATLAS Chile). It stays 15 mag for a while. In the Northern Hemisphere, it is not observable now. In the Southern Hemisphere, it stays observable in good condition. The brightness evolution is slower than originally expected. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 4 23.24 -44 2.8 2.976 2.784 69 15.1 2:58 (301,-42) June 22 4 40.99 -46 10.9 2.915 2.776 72 15.1 3:00 (304,-41) 37P/Forbes It will brighten up to 14 mag from summer to autumn. Now it is 15.8 mag (June 8, A. Pearce). Brightening slowly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it stays observable in good condition. Around the high light, it is observable in good condition in the Southern Hemisphere. But it locates extremely low in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 12 31.81 -17 24.1 1.382 1.971 109 15.3 21:02 ( 35, 30) June 22 12 37.49 -17 25.4 1.414 1.936 104 15.1 21:04 ( 40, 27) 299P/Catalina-PanSTARRS It brightened very rapidly in outburst in late May. Now it is 15.3 mag (June 12, Ken-ichi Kadota). Fading slowly. 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) June 15 15 27.69 -25 49.2 2.237 3.165 151 15.3 21:51 ( 0, 29) June 22 15 25.37 -25 12.7 2.288 3.168 144 15.3 21:21 ( 0, 30) 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 (May 23, ATLAS South Africa). It stays 16 mag for a while. 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) June 15 10 42.63 -47 45.6 7.879 8.100 98 15.3 21:02 ( 35, -8) June 22 10 45.45 -47 21.8 7.994 8.144 94 15.4 21:04 ( 39,-11) 146P/Shoemaker-LINEAR It will brighten up to 14.5 mag in summer. Now it is 16.6 mag (June 8, ATLAS Chile). It stays 16 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 1 34.82 -14 9.2 1.565 1.538 69 15.6 2:58 (290, 3) June 22 1 55.66 -11 55.6 1.515 1.509 70 15.3 3:00 (289, 6) 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. It locates somewhat low in the Southern Hemisphere. But it will become high in summer. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 7 28.39 -32 1.1 5.695 5.290 61 15.4 21:02 ( 70,-31) June 22 7 30.79 -31 56.2 5.780 5.332 59 15.5 21:04 ( 73,-36) 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 15.9 mag (May 24, Ken-ichi Kadota). 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) June 15 23 0.39 -4 53.2 4.930 5.198 99 15.6 2:58 (311, 37) June 22 23 2.18 -4 35.5 4.789 5.160 105 15.5 3:00 (318, 41) C/2022 QE78 ( ATLAS ) Now it is 15.9 mag (Mar. 26, ATLAS Chile). It stays 15 mag for a while. Now it is not observable. It will appear soon in the Southern Hemisphere, or in August in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 5 32.06 2 9.2 7.325 6.389 21 15.6 2:58 (238,-34) June 22 5 37.45 2 26.4 7.295 6.363 21 15.6 3:00 (243,-30) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.0 mag (May 3, Thomas Lehmann). 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) June 15 3 49.74 -62 0.6 16.278 16.271 87 15.7 2:58 (325,-39) June 22 3 53.67 -62 15.7 16.224 16.247 89 15.7 3:00 (326,-36) 30P/Reinmuth 1 Now it is 16.3 mag (Mar. 29, Ken-ichi Kadota). It stays 16 mag for a while. Now it is not observable. It will appear in September in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 6 9.50 21 32.3 2.900 1.901 8 15.9 21:02 (130,-14) June 22 6 28.32 21 40.9 2.890 1.883 6 15.9 21:04 (132,-16) P/2003 T12 ( SOHO ) It was observed at three apparitions in 2003, 2012 and 2016. It has not been observed yet in this apparition. It will brighten up to 15.5 mag in July. It brightens up to 15.5 mag, but it will turn to fade out rapidly after that. It will be fainter than 18 mag in July. It will be unobservable soon in the Northern Hemisphere, or in July in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 2 58.23 17 55.9 1.150 0.695 36 16.8 2:58 (252, 5) June 22 3 48.10 19 12.2 1.211 0.636 31 16.0 3:00 (248, 2) 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 16.0 mag (June 4, 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) June 15 17 28.90 33 6.2 6.564 7.176 123 16.1 23:52 ( 0, 88) June 22 17 25.94 33 10.0 6.617 7.217 122 16.2 23:21 ( 0, 88) C/2023 F3 ( ATLAS ) Now it is 16.5 mag (June 6, Giuseppe Pappa). It stays 16 mag for a while. In the Northern Hemisphere, it will be unobservable in July. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 14 8.73 -49 5.6 4.742 5.479 132 16.3 21:02 ( 5, 6) June 22 13 58.77 -48 3.1 4.799 5.462 126 16.3 21:04 ( 12, 5) 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 15.4 mag (May 30, Thomas Lehmann). 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 will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 5 59.26 -37 30.6 5.267 4.858 61 16.4 21:02 ( 71,-50) June 22 6 5.93 -36 53.3 5.328 4.905 60 16.5 21:04 ( 74,-54) 89P/Russell 2 It will brighten up to 16 mag in summer. Now it is 16.8 mag (May 29, ATLAS South Africa). It stays 17 mag for a while. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 23 32.56 -18 30.8 1.932 2.298 97 16.6 2:58 (314, 22) June 22 23 39.86 -18 15.0 1.871 2.312 102 16.6 3:00 (318, 25) C/2019 E3 ( ATLAS ) Very far object. Now it is 17.1 mag (Apr. 2, 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) June 15 2 57.67 -63 26.2 10.290 10.376 92 16.7 2:58 (328,-34) June 22 2 59.74 -63 41.0 10.256 10.380 94 16.7 3:00 (329,-31) 65P/Gunn Now it is 16.5 mag (June 5, Hirohisa Sato). It stays 17 mag for a while. It will be getting lower gradually after this, and 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) June 15 12 33.98 3 19.7 3.033 3.399 102 16.7 21:02 ( 49, 47) June 22 12 36.17 2 42.4 3.115 3.384 96 16.8 21:04 ( 56, 42) C/2021 X1 ( Maury-Attard ) It brightened up to 14 mag in early 2023 and 2023 autumn. Now it is 16.7 mag (May 25, ATLAS-MLO, Mauna Loa). 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) June 15 22 29.59 20 38.4 4.581 4.790 95 16.9 2:58 (291, 60) June 22 22 23.59 21 17.4 4.513 4.835 102 16.9 3:00 (301, 67) 62P/Tsuchinshan 1 It brightened up to 7.4 mag from December to January (Dec. 24, Osamu Miyazaki). Now it is 16.3 mag (May 29, Ken-ichi Kadota). Fading rapidly. It will be fainter than 18 mag in July. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 12 34.73 -0 2.0 1.778 2.249 103 16.9 21:02 ( 46, 45) June 22 12 41.84 -1 8.2 1.907 2.301 99 17.3 21:04 ( 51, 40) 362P/(457175) 2008 GO98 Now it is 16.4 mag (May 4, Toshiyuki Takahashi). 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) June 15 15 1.84 -0 57.6 2.046 2.872 136 16.9 21:25 ( 0, 54) June 22 15 0.72 -0 55.0 2.105 2.870 130 17.0 21:04 ( 3, 54) 227P/Catalina-LINEAR It brightened up to 14.5 mag from February to March (Mar. 11, W. Pei). Now it is 16.8 mag (June 7, ATLAS-HKO, Haleakala). It will fade out rapidly after this. It will be fainter than 18 mag in July. 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) June 15 11 1.89 9 23.0 1.786 1.878 78 16.9 21:02 ( 76, 35) June 22 11 15.95 7 24.4 1.877 1.911 76 17.2 21:04 ( 76, 30) C/2023 T3 ( Fuls ) Now it is 17.0 mag (May 27, Taras Prystavski). 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 after this, and it will be unobservable in August. But it will be observable again in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 8 36.00 -5 44.1 4.612 4.082 53 17.1 21:02 ( 85, -4) June 22 8 43.57 -5 58.5 4.646 4.052 48 17.1 21:04 ( 88, -8) C/2023 H5 ( Lemmon ) Now it is 17.4 mag (June 14, ATLAS-MLO, Mauna Loa). It stays 17 mag for a while. It will be unobservable in August. But it will be observable again in September in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 10 13.56 19 45.7 5.664 5.305 64 17.1 21:02 ( 94, 30) June 22 10 15.96 20 5.2 5.736 5.273 58 17.1 21:04 ( 98, 25) 125P/Spacewatch Now it is 16.7 mag (June 5, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag in July. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 21 48.96 -3 11.7 1.119 1.805 115 17.2 2:58 (331, 48) June 22 21 51.90 -3 18.9 1.094 1.840 121 17.5 3:00 (340, 50) 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 17.2 mag (June 13, ATLAS South Africa). Brightening gradually. 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) June 15 13 29.27 -76 13.5 3.225 3.826 119 17.4 21:02 ( 4,-22) June 22 13 11.68 -74 10.9 3.165 3.740 117 17.2 21:04 ( 8,-21) C/2023 Q1 ( PanSTARRS ) Brightening slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it will be unobservable in September. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 2 40.48 32 23.9 3.855 3.134 39 17.4 2:58 (241, 16) June 22 2 51.37 34 4.1 3.759 3.094 42 17.3 3:00 (242, 20) C/2022 T1 ( Lemmon ) Now it is 17.8 mag (June 10, Mt. Lemmon Survey). Fading slowly. It will be fainter than 18 mag in August. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 14 2.46 -17 54.7 2.872 3.614 130 17.3 21:02 ( 11, 36) June 22 14 4.44 -17 15.5 2.966 3.634 124 17.4 21:04 ( 19, 36) C/2022 U1 ( Leonard ) Now it is 17.4 mag (June 6, ATLAS-HKO, Haleakala). It stays 18 mag for a while. In the Northern Hemisphere, it stays observable in good condition. It stays extremely low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 22 17.80 47 27.9 4.225 4.257 84 17.4 2:58 (229, 67) June 22 22 7.60 48 10.8 4.144 4.266 89 17.4 3:00 (218, 72) 473P/2023 W1 ( NEAT ) First return of a new periodic comet which brightened up to 10 mag in 2001. It brightened up to 12.5 mag from February to March (Feb. 29, Thomas Lehmann). Now it is 14.9 mag (May 28, Thomas Lehmann). Fading rapidly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 9 3.96 57 34.2 2.454 1.973 50 17.6 21:02 (140, 32) June 22 9 31.90 54 42.5 2.539 2.032 49 18.1 21:04 (137, 31) 328P/LONEOS-Tucker Now it is 18.9 mag (June 12, Taras Prystavski). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 1 9.61 10 26.1 2.128 1.916 64 17.9 2:58 (273, 23) June 22 1 23.32 12 50.2 2.059 1.903 66 17.7 3:00 (273, 27) C/2023 Q2 ( PanSTARRS ) Now it is 19.2 mag (June 4, Yasukazu Ikari). Fading slowly. It will be fainter than 18 mag in July. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) June 15 18 40.93 -8 27.7 2.245 3.210 158 17.8 1:09 ( 0, 47) June 22 18 26.87 -10 52.7 2.213 3.209 166 17.8 0:27 ( 0, 44) C/2024 J3 ( ATLAS ) Now it is 17.1 mag (June 13, ATLAS South Africa). It stays 18 mag for a while. It stays extremely low in the Northern Hemisphere. But it will become high in spring. 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) June 15 19 10.85 -42 55.0 7.188 8.099 152 17.9 1:38 ( 0, 12) June 22 19 6.28 -42 48.3 7.113 8.056 156 17.8 1:06 ( 0, 12) C/2023 R1 ( PanSTARRS ) Now it is 17.9 mag (June 8, ATLAS-HKO, Haleakala). Brightening slowly. 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) June 15 0 21.51 29 13.9 6.979 6.683 69 18.0 2:58 (260, 42) June 22 0 20.54 29 42.7 6.827 6.638 75 17.9 3:00 (262, 48)