Weekly Information about Bright Comets (2024 July 20: North)

Japanese version Home page	Updated on July 18, 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 6.9 mag (July 15, Virgilio Gonano). It will fade out rapidly after this. In the Northern Hemisphere, it will be unobservable in November. 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) July 20 10 17.13 39 23.5 1.895 1.214 35 6.9 20:52 (126, 17) July 27 10 53.13 36 56.1 1.902 1.245 36 7.0 20:45 (123, 18) 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 8.1 mag (July 10, 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) July 20 9 25.47 -42 48.1 1.851 1.722 66 8.6 20:52 ( 59,-36) July 27 9 58.17 -44 21.9 1.951 1.814 67 8.9 20:45 ( 56,-35) 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 9.6 mag (July 16, Mike Olason). It will brighten rapidly after this. It will be unobservable soon in the Northern Hemisphere, or in August in the Southern Hemisphere. But it will be observable again in September in the Southern Hemisphere, or in October in the Northern 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. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 11 1.53 1 37.9 2.040 1.566 48 9.0 20:52 ( 89, 4) July 27 10 57.86 1 2.1 2.042 1.447 41 8.8 20:45 ( 92, -1) C/2023 V4 ( Camarasa-Duszanowicz ) It brightened very rapidly. Now it is 10.8 mag (July 8, Virgilio Gonano). It will fade out rapidly after this. In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in November. 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) July 20 11 1.27 53 15.6 1.843 1.382 47 11.6 20:52 (136, 30) July 27 11 41.67 49 4.6 1.891 1.447 49 11.9 20:45 (130, 31) C/2023 R2 ( PanSTARRS ) It brightens up to 11 mag in August. 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) July 20 8 19.81 6 23.7 1.940 0.996 15 11.9 20:52 (118,-25) July 27 8 52.90 6 8.4 1.898 0.951 14 11.7 20:45 (115,-22) 154P/Brewington Now it is 13.5 mag (July 6, Hiroshi Abe). 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) July 20 5 4.38 34 47.9 2.237 1.607 40 12.1 3:19 (241, 20) July 27 5 28.18 35 38.7 2.231 1.629 42 12.3 3:26 (241, 23) 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. 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) July 20 8 55.92 23 17.6 2.297 1.331 13 12.4 20:52 (124, -7) July 27 9 20.83 21 55.9 2.355 1.385 13 12.9 20:45 (123, -7) 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) July 20 7 16.14 38 28.9 4.640 3.701 19 12.6 3:19 (222, 1) July 27 7 19.69 39 11.6 4.592 3.693 24 12.6 3:26 (226, 6) C/2023 C2 ( ATLAS ) Now it is 13.3 mag (June 30, 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. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 15 32.83 -63 48.9 2.072 2.713 118 12.9 20:52 ( 8,-10) July 27 15 39.86 -61 12.8 2.076 2.677 115 12.9 20:45 ( 10, -8) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March (Feb. 25, Thomas Lehmann). Now it is 12.4 mag (July 8, 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) July 20 19 47.47 62 29.2 2.205 2.535 96 13.3 23:51 (180, 62) July 27 19 38.91 61 49.0 2.259 2.609 98 13.4 23:15 (180, 63) C/2021 G2 ( ATLAS ) Now it is 14.5 mag (July 10, ATLAS Chile). 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) July 20 12 21.94 -20 32.0 5.136 4.998 76 14.0 20:52 ( 59, 6) July 27 12 27.38 -20 5.9 5.231 4.994 71 14.1 20:45 ( 62, 4) 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) July 20 8 57.61 16 55.0 7.196 6.218 14 14.2 20:52 (120,-11) July 27 9 2.73 16 29.7 7.220 6.219 9 14.2 20:45 (122,-14) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. Now it is 13.6 mag (July 4, 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) July 20 0 23.15 -61 57.3 4.484 5.059 119 14.3 3:19 (351, -8) July 27 0 14.22 -63 49.5 4.512 5.116 121 14.4 3:26 (357, -9) 37P/Forbes It will brighten up to 14 mag from summer to autumn. Now it is 16.3 mag (July 10, 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) July 20 13 14.86 -18 52.2 1.548 1.808 87 14.6 20:52 ( 52, 16) July 27 13 27.45 -19 30.4 1.582 1.779 83 14.5 20:45 ( 53, 15) 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) July 20 14 18.09 -29 3.3 1.008 1.596 104 14.6 20:52 ( 33, 17) July 27 14 43.08 -28 46.1 1.097 1.651 102 15.1 20:45 ( 32, 18) 146P/Shoemaker-LINEAR It will brighten up to 14.5 mag in summer. Now it is 15 mag (July 12, Giuseppe Pappa). Fading gradually. 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) July 20 3 16.10 -2 32.6 1.355 1.432 72 14.7 3:19 (290, 22) July 27 3 35.15 -0 10.7 1.323 1.424 73 14.7 3:26 (290, 26) 130P/McNaught-Hughes Now it is 14.4 mag (July 6, Hiroshi Abe). Fading slowly. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 2 3.64 5 44.3 1.780 1.998 86 14.8 3:19 (296, 41) July 27 2 12.93 6 25.9 1.732 2.022 90 14.8 3:26 (301, 46) 192P/Shoemaker-Levy 1 Now it is 16.7 mag (June 7, Taras Prystavski). 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) July 20 4 40.44 19 40.5 2.150 1.622 46 14.8 3:19 (258, 17) July 27 4 57.59 21 26.1 2.146 1.660 48 14.9 3:26 (258, 22) C/2022 S4 ( Lemmon ) Now it is 16.5 mag (June 20, Thomas Lehmann). It stays 15 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) July 20 6 12.08 -55 33.9 2.760 2.762 79 15.0 3:19 (317,-36) July 27 6 41.14 -57 48.4 2.751 2.763 80 14.9 3:26 (320,-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 15.6 mag (July 3, 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) July 20 23 4.15 -3 54.0 4.274 5.009 131 15.2 3:13 ( 0, 51) July 27 23 3.30 -3 51.5 4.165 4.972 138 15.1 2:44 ( 0, 51) C/2022 L2 ( ATLAS ) Now it is 15.5 mag (July 8, Thomas Lehmann). It stays 15 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) July 20 9 44.71 -22 25.4 3.556 3.011 50 15.1 20:52 ( 79,-25) July 27 9 45.77 -22 34.4 3.658 3.043 46 15.2 20:45 ( 81,-29) 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. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 9 26.27 22 23.9 3.101 2.179 20 15.2 20:52 (119, -2) July 27 9 42.13 21 6.2 3.145 2.202 18 15.3 20:45 (119, -4) 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 unobservable soon. But it will be observable again in July. 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) July 20 6 7.82 16 12.9 7.219 6.326 26 15.2 3:19 (249, -2) July 27 6 11.16 16 25.4 7.220 6.383 32 15.3 3:26 (253, 4) C/2022 QE78 ( ATLAS ) Now it is 15.9 mag (Mar. 26, ATLAS Chile). It stays 15 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in August. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 5 58.83 3 12.5 7.083 6.265 33 15.4 3:19 (260, -8) July 27 6 3.99 3 18.8 7.008 6.241 38 15.4 3:26 (265, -2) 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) July 20 10 19.27 9 10.1 2.415 1.700 35 15.5 20:52 (101, 0) July 27 10 37.69 7 24.1 2.467 1.723 34 15.7 20:45 (100, -2) C/2014 UN271 ( Bernardinelli-Bernstein ) Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.3 mag (June 19, 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) July 20 4 7.94 -63 37.8 16.024 16.151 95 15.6 3:19 (332,-24) July 27 4 10.97 -64 3.0 15.980 16.126 96 15.6 3:26 (334,-22) C/2019 L3 ( ATLAS ) It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 16.8 mag (July 9, 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) July 20 11 0.17 -46 21.3 8.464 8.324 78 15.6 20:52 ( 48,-22) July 27 11 4.51 -46 15.4 8.580 8.369 74 15.7 20:45 ( 49,-25) 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 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) July 20 15 26.19 -23 22.0 2.583 3.183 117 15.6 20:52 ( 21, 29) July 27 15 28.91 -23 5.2 2.674 3.188 111 15.7 20:45 ( 25, 27) 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) July 20 7 45.48 20 49.2 2.844 1.830 2 15.7 3:19 (229,-16) July 27 8 4.91 20 14.8 2.832 1.822 5 15.6 3:26 (233,-14) 2020 TS2 It will approach to Sun down to 0.12 a.u. on Aug. 4. It will brighten up to 11 mag, but it is not observable at the high light. It brightens up to 10.5 mag, but it will turn to fade out rapidly after that. It will be fainter than 18 mag in September. Now it is not observable. It will appear in August 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) July 20 7 3.87 16 51.0 1.502 0.565 13 17.9 3:19 (240,-12) July 27 7 55.96 17 41.5 1.348 0.364 7 15.8 3:26 (236,-14) 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) July 20 7 41.35 -32 38.8 6.044 5.500 53 15.8 3:19 (282,-47) July 27 7 43.96 -33 4.2 6.090 5.543 53 15.9 3:26 (286,-41) 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 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 stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 6 30.01 -35 33.2 5.526 5.094 59 16.2 3:19 (293,-34) July 27 6 35.24 -35 29.1 5.562 5.141 60 16.2 3:26 (295,-28) 89P/Russell 2 Now it is 16.6 mag (July 6, ATLAS Chile). Fading slowly. 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) July 20 23 57.27 -18 17.6 1.653 2.375 123 16.4 3:19 (346, 36) July 27 23 58.24 -18 33.8 1.610 2.393 129 16.4 3:26 (356, 36) C/2023 F3 ( ATLAS ) Now it is 16.8 mag (July 9, ATLAS Chile). 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) July 20 13 32.60 -43 55.3 5.134 5.401 99 16.4 20:52 ( 33, 0) July 27 13 29.05 -43 1.8 5.234 5.386 93 16.4 20:45 ( 36, -3) 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 16.4 mag (July 13, ATLAS-MLO, Mauna Loa). Fading slowly. 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) July 20 17 16.15 32 26.5 6.903 7.379 114 16.4 21:21 ( 0, 87) July 27 17 14.55 32 3.4 6.991 7.420 111 16.5 20:52 ( 0, 87) 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 stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 12 51.50 -65 3.7 3.023 3.383 101 16.7 20:52 ( 23,-20) July 27 12 53.51 -62 50.8 3.007 3.291 97 16.6 20:45 ( 26,-20) C/2022 R6 ( PanSTARRS ) Now it is 17.0 mag (May 6, ATLAS Chile). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in August. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 6 20.15 -23 55.9 7.697 7.095 50 16.7 3:19 (281,-27) July 27 6 25.46 -24 1.1 7.654 7.078 52 16.7 3:26 (285,-21) C/2019 E3 ( ATLAS ) Very far object. Now it is 16.7 mag (July 5, 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) July 20 3 3.23 -65 12.4 10.136 10.398 102 16.7 3:19 (338,-20) July 27 3 2.55 -65 41.3 10.114 10.402 103 16.7 3:26 (341,-17) C/2023 Q1 ( PanSTARRS ) Now it is 16.8 mag (June 26, P.-J. Dekelver). 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) July 20 3 38.47 41 1.6 3.355 2.944 57 16.8 3:19 (242, 38) July 27 3 51.24 42 49.7 3.252 2.909 61 16.7 3:26 (241, 43) 472P/2023 RL75 ( NEAT-LINEAR ) Brightening slowly. 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) July 20 5 4.53 17 4.3 4.089 3.390 41 16.9 3:19 (257, 11) July 27 5 14.37 17 1.1 4.026 3.391 45 16.8 3:26 (260, 16) 144P/Kushida It brightened up to 8.9 mag from January to March (Feb. 13, Chris Wyatt). Now it is 14.9 mag (June 29, Thomas Lehmann). It will fade out rapidly after this. It will be fainter than 18 mag in August. It stays extremely low in the Northern Hemisphere. It locates somewhat low in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 11 20.35 1 27.3 2.791 2.324 52 16.8 20:52 ( 86, 8) July 27 11 32.71 0 15.2 2.904 2.375 49 17.2 20:45 ( 86, 5) 65P/Gunn Now it is 16.5 mag (July 11, ATLAS Chile). 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) July 20 12 52.15 -0 22.5 3.445 3.325 74 16.9 20:52 ( 70, 25) July 27 12 57.70 -1 15.6 3.523 3.311 69 16.9 20:45 ( 72, 22) 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) July 20 7 23.59 -27 40.1 5.396 4.792 49 17.0 3:19 (278,-42) July 27 7 29.39 -27 10.7 5.371 4.758 48 16.9 3:26 (281,-35) 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) July 20 21 51.46 22 50.0 4.319 5.015 128 17.0 2:01 ( 0, 78) July 27 21 41.90 22 52.5 4.302 5.060 133 17.0 1:24 ( 0, 78) 362P/(457175) 2008 GO98 Now it is 16.4 mag (May 4, Toshiyuki Takahashi). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. 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) July 20 15 6.20 -1 59.5 2.405 2.866 106 17.1 20:52 ( 38, 46) July 27 15 9.95 -2 29.5 2.490 2.866 101 17.1 20:45 ( 42, 44) 328P/LONEOS-Tucker Now it is 17.6 mag (July 13, ATLAS-HKO, Haleakala). Fading slowly. 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) July 20 2 17.86 22 27.5 1.803 1.875 77 17.2 3:19 (274, 48) July 27 2 31.24 24 49.8 1.744 1.873 80 17.1 3:26 (274, 53) P/2003 T12 ( SOHO ) It was observed at three apparitions in 2003, 2012 and 2016. It has not been observed yet in this apparition. Fading rapidly. It will be fainter than 18 mag soon. It will never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 6 49.21 18 19.5 1.582 0.671 16 17.2 3:19 (241, -8) July 27 7 26.09 17 6.8 1.681 0.741 14 18.4 3:26 (241, -9) 125P/Spacewatch Now it is 16.8 mag (July 12, ATLAS Chile). It will fade out rapidly after this. It will be fainter than 18 mag in August. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 21 46.38 -6 7.9 1.042 1.988 149 17.3 1:55 ( 0, 49) July 27 21 41.50 -7 20.2 1.049 2.027 158 17.4 1:23 ( 0, 48) C/2022 U1 ( Leonard ) Now it is 16.5 mag (July 4, A. Diepvens). 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) July 20 21 12.23 48 59.8 3.883 4.313 108 17.3 1:21 (180, 76) July 27 20 56.10 48 28.4 3.843 4.327 111 17.3 0:38 (180, 76) 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. It stays 17 mag for a while. 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) July 20 4 48.71 27 58.2 2.377 1.782 43 17.4 3:19 (249, 20) July 27 5 9.49 28 58.0 2.341 1.783 45 17.4 3:26 (250, 23) C/2023 R1 ( PanSTARRS ) Now it is 17.6 mag (July 6, 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) July 20 0 10.61 31 22.9 6.201 6.458 100 17.6 3:19 (281, 77) July 27 0 6.40 31 41.0 6.049 6.413 106 17.5 3:26 (304, 85) C/2024 J3 ( ATLAS ) Now it is 17.1 mag (July 9, ATLAS Chile). 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) July 20 18 46.90 -41 50.2 6.962 7.889 154 17.7 22:52 ( 0, 13) July 27 18 42.32 -41 27.9 6.960 7.846 148 17.7 22:20 ( 0, 14) 253P/PanSTARRS Brightening slowly. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) July 20 0 31.19 1 32.2 1.582 2.149 109 18.0 3:19 (326, 52) July 27 0 38.31 1 53.0 1.500 2.132 114 17.8 3:26 (337, 55) C/2022 T1 ( Lemmon ) Now it is 17.8 mag (June 29, ATLAS Chile). Fading slowly. It will be fainter than 18 mag soon. 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) July 20 14 19.11 -15 38.3 3.406 3.723 100 17.8 20:52 ( 41, 28) July 27 14 24.25 -15 27.4 3.526 3.748 94 18.0 20:45 ( 44, 26) C/2023 Q2 ( PanSTARRS ) Now it is 16.9 mag (July 1, G. Duszanowicz). Fading slowly. It will be fainter than 18 mag soon. 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) July 20 17 29.43 -20 32.4 2.331 3.219 145 17.9 21:34 ( 0, 34) July 27 17 17.18 -22 37.8 2.416 3.225 136 18.0 20:55 ( 0, 32) 338P/McNaught Now it is 18.2 mag (July 6, Taras Prystavski). 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) July 20 2 13.68 13 21.3 2.203 2.290 81 18.0 3:19 (286, 44) July 27 2 21.45 15 9.9 2.122 2.288 86 17.9 3:26 (290, 50) 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) July 20 3 19.26 15 27.9 4.631 4.318 65 17.9 3:19 (273, 31) July 27 3 23.83 15 47.5 4.546 4.332 71 17.9 3:26 (277, 38)