Weekly Information about Bright Comets (2025 Oct. 25: North)

Japanese version Home page	Updated on October 26, 2025
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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.

C/2025 A6 ( Lemmon ) Now it is 4.3 mag (Oct. 19, 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 December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 15 17.77 19 54.6 0.623 0.628 37 4.0 18:38 (102, 17) Nov. 1 16 23.58 2 47.6 0.778 0.559 34 3.9 18:31 ( 81, 16) C/2025 R2 ( SWAN ) Now it is 5.6 mag (Oct. 19, Virgilio Gonano). 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) Oct. 25 20 23.62 -7 55.8 0.281 1.056 94 6.5 18:38 ( 8, 47) Nov. 1 21 53.42 -1 36.7 0.365 1.174 111 7.7 19:15 ( 0, 54) C/2025 K1 ( ATLAS ) Now it is 9.7 mag (Oct. 25, Piotr Guzik). It will fade out rapidly after this. It will be fainter than 18 mag in February. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it will be unobservable in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 11 49.20 -1 43.1 0.997 0.572 33 9.3 4:49 (282, 14) Nov. 1 11 38.34 4 52.4 0.825 0.718 45 9.8 4:55 (284, 26) 210P/Christensen It is expected to brighten up to 8 mag from late autumn to early winter. Now it is 14.8 mag (Oct. 22, Martin Masek). It brightens up to 8.5 mag, but it will turn to fade out rapidly after that. In the Northern Hemisphere, it is not observable now, but it will appear in November. In the Southern Hemisphere, it will be unobservable in November. But it will be observable again in December. It is much fainter than this ephemeris recently. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 17 13.96 -40 8.7 0.481 0.790 51 10.9 18:38 ( 39, -1) Nov. 1 16 37.77 -37 53.4 0.448 0.695 37 9.9 18:31 ( 48, -7) C/2024 E1 ( Wierzchos ) It is expected to brighten up to 5 mag in January. Now it is 12.6 mag (Sept. 30, Thomas Lehmann). It will brighten rapidly after this. In the Northern Hemisphere, it will be unobservable in December. But it will be observable again in February. In the Southern Hemisphere, it is not observable now, but it will appear in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 16 37.84 11 36.5 2.313 1.778 46 11.3 18:38 ( 84, 28) Nov. 1 16 47.53 8 12.1 2.271 1.672 42 11.0 18:31 ( 83, 24) 3I/2025 N1 ( ATLAS ) Third interstellar object in history following 1I/'Oumuamua and 2I/Borisov. The eccentricity is extremely big as 6. It approaches to Sun down to 1.38 a.u. in late October. Now it is 10.8 mag (Oct. 2, Thomas Lehmann). It will turn to fade out rapidly after the peak. Now it is not observable. It will appear in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 13 38.94 -7 39.6 2.351 1.366 6 11.2 4:49 (271,-12) Nov. 1 13 24.25 -6 31.9 2.280 1.360 16 11.1 4:55 (277, -2) C/2025 T1 ( ATLAS ) Bright new comet. Now it is 12.4 mag (Oct. 21, Martin Masek). It brightens up to 11.5 mag, but it will turn to fade out rapidly after that. In the Northern Hemisphere, it will be unobservable in January. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 12 56.69 53 59.6 1.264 1.270 67 12.5 4:49 (222, 29) Nov. 1 14 15.90 55 14.9 1.135 1.220 69 12.1 4:55 (218, 23) 240P/NEAT Now it is brighter than originally expected. Now it is 13.1 mag (Sept. 30, Hiroshi Abe). Fading slowly. It stays observable in good condition. It is expected to brighten up to 12 mag and to be observable in good condition from autumn to winter. A 19-mag fragment was found on Oct. 3. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 4 12.25 1 32.3 1.276 2.167 144 12.4 2:00 ( 0, 57) Nov. 1 4 7.89 2 23.4 1.230 2.157 151 12.3 1:28 ( 0, 57) C/2022 N2 ( PanSTARRS ) Now it is 13.9 mag (Sept. 23, Osamu Miyazaki). Fading 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) Oct. 25 3 32.39 26 32.0 2.984 3.898 153 13.3 1:20 ( 0, 82) Nov. 1 3 29.86 26 28.1 2.961 3.910 160 13.3 0:50 ( 0, 82) 24P/Schaumasse It will brighten up to 8 mag in winter, and will be observable in good condition. Now it is 15.9 mag (Oct. 1, Thomas Lehmann). Brightening rapidly. In the Northern Hemisphere, it stays observable in good condition. 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) Oct. 25 7 43.18 20 1.1 1.041 1.529 97 14.4 4:49 (327, 73) Nov. 1 8 8.19 20 9.8 0.955 1.477 98 13.5 4:55 (333, 73) 29P/Schwassmann-Wachmann 1 It will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 11 12.06 0 30.6 6.992 6.299 42 14.2 4:49 (286, 23) Nov. 1 11 15.83 -0 0.3 6.910 6.300 48 14.2 4:55 (292, 28) C/2023 R1 ( PanSTARRS ) It is expected to brighten up to 13 mag in early summer in 2026. Now it is 14.4 mag (Sept. 12, Andrew Pearce). It stays 14 mag for a while. It will be getting lower gradually after this, and it will be unobservable in January in the Northern Hemisphere, or in December in the Southern Hemisphere. But it will be observable again in January in the Northern Hemisphere, or in February in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 19 16.96 6 17.9 3.909 3.889 81 14.4 18:38 ( 43, 54) Nov. 1 19 14.72 4 59.7 4.009 3.864 74 14.4 18:31 ( 49, 49) 88P/Howell Now it is 17.7 mag (July 24, Thomas Lehmann). It will brighten rapidly after this. Now it is not observable. It will appear in January in the Southern Hemisphere, or in December in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 13 51.06 -9 55.4 3.004 2.011 2 14.7 4:49 (271,-16) Nov. 1 14 6.34 -11 26.3 2.951 1.965 5 14.5 4:55 (275,-13) C/2021 G2 ( ATLAS ) Now it is 14.8 mag (Sept. 27, Ken-ichi Kadota). It stays 15 mag for a while. In the Northern Hemisphere, it will be unobservable in November. But it will be observable again in December. In the Southern Hemisphere, it is not observable now, but it will appear in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 15 55.57 -1 15.6 6.706 5.878 31 14.6 18:38 ( 80, 12) Nov. 1 16 1.10 -1 16.3 6.771 5.906 27 14.6 18:31 ( 82, 9) C/2022 QE78 ( ATLAS ) Now it is 14.9 mag (Oct. 17, Ken-ichi Kadota). It stays 14 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) Oct. 25 9 11.03 19 28.4 5.620 5.485 77 14.6 4:49 (290, 58) Nov. 1 9 14.85 19 43.6 5.514 5.489 83 14.6 4:55 (299, 63) 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 (Sept. 29, Andrew Pearce). 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. In the Northern Hemisphere, it is not observable until 2030. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 5 40.50 -73 13.8 14.620 14.614 87 15.0 3:26 ( 0,-18) Nov. 1 5 38.29 -73 37.7 14.614 14.592 86 15.0 2:56 ( 0,-19) C/2024 J3 ( ATLAS ) It will brighten up to 13 mag in 2026. Now it is 15.4 mag (Oct. 2, ATLAS-MLO, Mauna Loa). It stays 15 mag for a while. It will be getting lower gradually after this, and it will be unobservable in December. But it will be observable again in January in the Northern Hemisphere, or in February in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 18 35.56 -9 50.6 5.417 5.131 68 15.0 18:38 ( 42, 35) Nov. 1 18 38.06 -9 24.2 5.482 5.094 62 15.0 18:31 ( 47, 32) 43P/Wolf-Harrington Now it is 16.3 mag (Sept. 28, Alfons Diepvens). It stays 15 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 10 6.32 3 33.0 2.868 2.513 59 15.0 4:49 (296, 37) Nov. 1 10 16.18 2 16.2 2.804 2.525 63 15.0 4:55 (302, 40) C/2022 E2 ( ATLAS ) It was observed at 12-13 mag for a long time in 2024. Now it is 14.8 mag (Oct. 2, Thomas Lehmann). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 22 49.35 47 2.9 4.423 5.089 127 15.3 20:33 (180, 78) Nov. 1 22 42.35 45 7.4 4.504 5.129 124 15.4 19:59 (180, 80) C/2024 T5 ( ATLAS ) Now it is 15.1 mag (Oct. 2, ATLAS Chile). It stays 15 mag for a while. It stays extremely low in the Northern Hemisphere. But it will become high in autumn. In the Southern Hemisphere, it stays observable in good condition. It is expected to brighten up to 12 mag in winter between 2026 and 2027. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 3 9.49 -46 1.1 5.492 6.048 119 15.5 0:57 ( 0, 9) Nov. 1 3 5.31 -46 7.2 5.464 6.006 118 15.4 0:25 ( 0, 9) C/2025 L1 ( ATLAS ) It is expected to brighten up to 13.5 mag and to be observable in good condition in 2026 spring. Now it is 16.8 mag (Aug. 12, ATLAS South Africa). Brightening slowly. In the Northern Hemisphere, it is not observable now, but it will appear in December. 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) Oct. 25 14 8.30 -54 56.3 2.585 1.977 43 15.5 18:38 ( 43,-34) Nov. 1 14 22.75 -52 56.5 2.605 1.932 38 15.4 4:55 (315,-34) 78P/Gehrels 2 It will brighten up to 12 mag in 2026 summer. Now it is 16.2 mag (Sept. 18, Francois Kugel). Brightening slowly. It will be getting lower gradually after this, and it will be unobservable in January in the Southern Hemisphere, or in February in the Northern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 20 6.28 -13 55.0 2.566 2.740 89 15.9 18:38 ( 15, 40) Nov. 1 20 12.58 -13 52.6 2.628 2.708 83 15.8 18:31 ( 19, 39) 235P/LINEAR It stays 16 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it will be unobservable in November. But it will be observable again in November. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 12 2.32 -4 18.8 2.838 2.032 29 16.0 4:49 (282, 10) Nov. 1 12 17.84 -5 42.7 2.789 2.020 32 15.9 4:55 (286, 12) 47P/Ashbrook-Jackson Now it is 15.5 mag (Sept. 29, ATLAS Chile). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 22 38.02 -9 32.4 2.105 2.808 126 16.1 20:22 ( 0, 46) Nov. 1 22 38.54 -8 55.8 2.184 2.808 119 16.2 19:56 ( 0, 46) C/2024 A1 ( ATLAS ) Now it is 16.6 mag (Oct. 3, Thomas Lehmann). It stays 16 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 8 52.33 35 25.8 3.991 4.046 86 16.3 4:49 (261, 68) Nov. 1 8 54.47 37 7.6 3.893 4.063 92 16.2 4:55 (257, 74) C/2023 C2 ( ATLAS ) It brightened up to 12.7 mag in 2024 summer (Aug. 7, 2024, Thomas Lehmann). Now it is 15.6 mag (Sept. 30, Hiroshi Abe). Fading slowly. 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) Oct. 25 22 17.60 55 27.3 3.707 4.283 119 16.2 20:02 (180, 69) Nov. 1 22 16.70 54 33.6 3.786 4.338 117 16.3 19:33 (180, 70) 65P/Gunn Now it is 16.3 mag (Sept. 25, ATLAS South Africa). It stays 17 mag for a while. It will be unobservable in January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 19 8.48 -30 19.2 3.123 2.997 73 16.2 18:38 ( 24, 20) Nov. 1 19 18.03 -29 56.6 3.219 3.005 68 16.3 18:31 ( 26, 20) C/2022 R6 ( PanSTARRS ) Now it is 16.6 mag (Oct. 2, ATLAS-MLO, Mauna Loa). It stays 16 mag for a while. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 8 52.48 -11 34.7 6.777 6.578 74 16.3 4:49 (326, 37) Nov. 1 8 54.62 -11 45.0 6.682 6.581 79 16.3 4:55 (335, 40) 261P/Larson Now it is 16.7 mag (Sept. 18, Francois Kugel). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in February. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 20 20.68 -14 39.8 1.778 2.075 92 16.5 18:38 ( 10, 40) Nov. 1 20 30.94 -14 0.4 1.841 2.062 88 16.5 18:31 ( 13, 40) C/2023 H5 ( Lemmon ) Now it is 16.7 mag (Sept. 30, Thomas Lehmann). It stays 17 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in winter. 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) Oct. 25 14 49.81 63 24.1 4.552 4.419 76 16.5 18:38 (149, 31) Nov. 1 15 11.02 63 26.4 4.526 4.432 78 16.5 18:31 (149, 31) 217P/LINEAR It brightened up to 12.1 mag in early summer (June 10, Taras Prystavski). Now it is 15.8 mag (Oct. 1, Katsumi Yoshimoto). Fading gradually. It will be fainter than 18 mag in January. In the Northern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 8 57.85 12 43.3 2.136 2.165 78 16.7 4:49 (303, 56) Nov. 1 9 4.56 12 31.6 2.102 2.222 83 16.9 4:55 (313, 60) 302P/Lemmon-PanSTARRS It brightened very rapidly, and it became brighter than expected. Now it is 15.8 mag (Sept. 27, Katsumi Yoshimoto). Fading slowly. It will be fainter than 18 mag in January. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 0 23.46 -5 48.5 2.543 3.445 150 16.8 22:07 ( 0, 49) Nov. 1 0 20.76 -5 58.7 2.607 3.454 143 16.8 21:37 ( 0, 49) 493P/2024 Q2 ( LONEOS ) Now it is 16.9 mag (Sept. 28, Alfons Diepvens). It stays 17 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) Oct. 25 5 16.16 50 40.8 3.207 3.854 124 16.8 3:04 (180, 74) Nov. 1 5 14.52 51 28.4 3.139 3.849 129 16.8 2:35 (180, 74) 145P/Shoemaker-Levy 5 Now it is 17.3 mag (Oct. 1, 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) Oct. 25 22 18.31 -20 6.4 1.440 2.092 117 16.9 20:03 ( 0, 35) Nov. 1 22 21.15 -18 45.6 1.483 2.066 111 16.8 19:38 ( 0, 36) C/2023 X2 ( Lemmon ) Now it is 16.9 mag (Oct. 3, 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 never be observable after this. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 9 10.84 80 11.5 4.866 5.112 98 16.9 4:49 (187, 43) Nov. 1 9 40.61 81 37.1 4.817 5.108 101 16.9 4:55 (186, 42) C/2023 F3 ( ATLAS ) Now it is 16.9 mag (July 13, Taras Prystavski). It stays 17 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in spring. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 11 2.58 -23 4.6 6.245 5.558 42 16.9 4:49 (306, 9) Nov. 1 11 3.10 -23 20.4 6.189 5.577 48 16.9 4:55 (312, 14) C/2024 R4 ( PanSTARRS ) Brightening rapidly. It is expected to brighten up to 13 mag from 2027 to 2028. Now it is 17.0 mag (Sept. 30, Thomas Lehmann). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in December. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 21 34.54 22 27.7 6.693 7.197 116 17.0 19:19 ( 0, 78) Nov. 1 21 32.24 22 8.7 6.744 7.157 110 17.0 18:49 ( 0, 77) C/2025 Q3 ( ATLAS ) Now it is 17.2 mag (Oct. 23, Ken-ichi Kadota). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 4 3.54 37 21.2 1.696 2.554 142 17.2 1:52 (180, 87) Nov. 1 3 49.32 33 55.6 1.588 2.511 152 17.0 1:10 ( 0, 89) 164P/Christensen Now it is 16.9 mag (Oct. 13, Ken-ichi Kadota). 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) Oct. 25 10 12.70 20 14.5 2.430 2.184 63 17.1 4:49 (277, 46) Nov. 1 10 24.41 20 0.1 2.390 2.222 68 17.0 4:55 (281, 50) C/2023 RS61 ( PanSTARRS ) Although it is around 20 mag usually, now it is bright in outburst. Now it is 17.1 mag (Oct. 13, Ken-ichi Kadota). It stays 17 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) Oct. 25 3 5.14 38 32.2 7.998 8.869 149 17.1 0:53 (180, 86) Nov. 1 3 2.45 38 31.3 7.954 8.860 154 17.0 0:23 (180, 86) C/2019 E3 ( ATLAS ) Very far object. Now it is 17.4 mag (July 26, ATLAS South Africa). It stays 17 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in December. In the Southern Hemisphere, it stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 0 28.50 -56 56.4 10.624 10.983 108 17.0 22:12 ( 0, -2) Nov. 1 0 23.84 -56 32.3 10.700 10.995 104 17.1 21:40 ( 0, -1) 195P/Hill Now it is 17.7 mag (Sept. 18, Hidetaka Sato). It stays 17 mag for a while. 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) Oct. 25 9 36.60 -20 35.0 4.822 4.456 62 17.1 4:49 (321, 23) Nov. 1 9 41.29 -21 47.0 4.749 4.458 67 17.1 4:55 (328, 26) C/2025 J1 ( Borisov ) Now it is 17.3 mag (Oct. 13, Ken-ichi Kadota). It stays 17 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 11 18.22 70 31.5 4.064 4.131 86 17.2 4:49 (204, 41) Nov. 1 11 19.12 71 10.0 3.960 4.100 91 17.1 4:55 (202, 44) C/2025 R1 ( ATLAS ) Now it is 17.1 mag (Oct. 17, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag in December. In the Northern Hemisphere, it will be getting lower gradually. 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) Oct. 25 18 43.69 65 8.4 1.686 2.007 93 17.2 18:38 (157, 54) Nov. 1 18 40.63 58 24.8 1.740 1.994 89 17.2 18:31 (144, 56) C/2020 V2 ( ZTF ) It was observed at 9-10 mag for a long time in 2023. It is fading very slowly. Now it is 16.9 mag (Sept. 29, ATLAS South Africa). It stays 18 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 January. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 18 54.00 -68 40.2 8.822 8.586 73 17.2 18:38 ( 11,-16) Nov. 1 18 55.69 -68 6.6 8.949 8.636 68 17.2 18:31 ( 13,-16) C/2017 K2 ( PanSTARRS ) It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 17.2 mag (Sept. 28, Alfons Diepvens). 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) Oct. 25 6 16.55 29 10.1 9.318 9.820 117 17.4 4:04 ( 0, 84) Nov. 1 6 14.65 29 23.1 9.266 9.869 125 17.4 3:35 ( 0, 84) C/2019 U5 ( PanSTARRS ) Now it is 17.1 mag (Sept. 2, Andrew Pearce). It stays 18 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) Oct. 25 5 44.50 -45 57.1 8.144 8.422 102 17.4 3:31 ( 0, 9) Nov. 1 5 39.63 -46 31.5 8.154 8.466 105 17.4 2:59 ( 0, 9) C/2023 U1 ( Fuls ) It continues brightening even after the perihelion passage. Now it is 17.5 mag (Oct. 1, ATLAS Chile). It stays 18 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) Oct. 25 0 25.79 -68 14.7 5.515 5.741 98 17.5 22:08 ( 0,-13) Nov. 1 0 8.79 -67 30.9 5.603 5.767 94 17.5 21:24 ( 0,-12) C/2023 H1 ( PanSTARRS ) Now it is 17.0 mag (Sept. 25, ATLAS-MLO, Mauna Loa). Fading slowly. It will be fainter than 18 mag in December. It will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 19 55.85 -14 2.5 5.137 5.177 86 17.5 18:38 ( 18, 39) Nov. 1 19 59.45 -13 43.9 5.272 5.205 80 17.6 18:31 ( 23, 38) 48P/Johnson Now it is 16.4 mag (Oct. 2, ATLAS-MLO, Mauna Loa). 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) Oct. 25 3 51.37 3 2.8 1.750 2.660 150 17.6 1:39 ( 0, 58) Nov. 1 3 45.82 2 46.9 1.749 2.690 156 17.8 1:06 ( 0, 58) C/2024 X2 ( ATLAS ) Now it is 17.7 mag (June 26, ATLAS Chile). 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) Oct. 25 9 24.16 -6 26.6 4.063 3.795 67 17.6 4:49 (314, 37) Nov. 1 9 24.88 -5 58.0 3.964 3.810 73 17.6 4:55 (322, 42) (3200) Phaethon Fading slowly. It will be fainter than 18 mag in December. 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) Oct. 25 3 1.18 42 33.0 1.450 2.344 146 17.7 0:50 (180, 82) Nov. 1 2 42.10 41 30.1 1.434 2.360 152 17.6 0:04 (180, 83) 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 17.4 mag (Mar. 25, ATLAS South Africa). 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) Oct. 25 6 39.64 -20 0.6 7.975 8.265 103 17.7 4:26 ( 0, 35) Nov. 1 6 37.80 -20 15.0 7.939 8.312 108 17.7 3:57 ( 0, 35) 414P/STEREO It brightened up to 14.4 mag in September (Sept. 17, Ken-ichi Kadota). Fading rapidly. Now it is not observable. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 12 58.75 -17 17.6 1.699 0.784 15 17.7 4:49 (285, -9) Nov. 1 13 28.18 -20 7.1 1.806 0.882 14 19.3 4:55 (288,-10) C/2024 G4 ( PanSTARRS ) Now it is 17.8 mag (Sept. 21, Alfons Diepvens). It stays 18 mag for a while. It will be unobservable in November in the Southern Hemisphere, or in December in the Northern Hemisphere. But it will be observable again in January in the Northern Hemisphere, or in February in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 17 23.53 3 57.0 5.557 5.032 53 17.7 18:38 ( 70, 33) Nov. 1 17 29.85 3 18.5 5.612 5.020 49 17.8 18:31 ( 72, 29) 242P/Spahr Now it is 17.8 mag (Mar. 17, ATLAS Chile). 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) Oct. 25 8 1.52 -11 40.2 4.144 4.204 86 17.8 4:49 (341, 41) Nov. 1 8 4.11 -12 26.6 4.066 4.214 91 17.8 4:55 (351, 42) 276P/Vorobjov Now it is 18.1 mag (Sept. 17, ATLAS-HKO, Haleakala). 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) Oct. 25 7 9.17 7 58.4 3.804 4.147 103 17.8 4:49 (356, 63) Nov. 1 7 10.32 7 26.2 3.717 4.158 109 17.8 4:30 ( 0, 62) C/2024 L5 ( ATLAS ) It brightened up to 14.7 mag in spring (Apr. 7, Taras Prystavski). It stays 18 mag for a while. It will be getting higher gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 11 23.02 -1 4.7 4.754 4.040 39 17.8 4:49 (286, 19) Nov. 1 11 23.44 -1 0.6 4.691 4.074 46 17.9 4:55 (291, 26) C/2024 N3 ( Sarneczky ) Now it is 17.9 mag (Oct. 3, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. 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) Oct. 25 16 54.93 39 57.7 5.556 5.236 66 17.8 18:38 (114, 43) Nov. 1 17 0.26 38 29.5 5.607 5.251 64 17.9 18:31 (114, 40) C/2024 J2 ( Wierzchos ) It brightened rapidly up to 14.6 mag in last winter (Jan. 31, Thomas Lehmann). Now it is 17.3 mag (Oct. 2, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in November. 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) Oct. 25 2 42.98 -48 45.9 2.580 3.176 118 17.8 0:31 ( 0, 6) Nov. 1 2 33.86 -50 4.2 2.684 3.238 115 18.0 23:49 ( 0, 5) C/2021 S3 ( PanSTARRS ) It brightened up to 9.6 mag from February to March in 2024 (Feb. 25, 2024, Thomas Lehmann). Now it is 17.9 mag (Sept. 17, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag in November. 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) Oct. 25 22 51.17 39 7.8 6.216 6.907 130 17.8 20:35 (180, 86) Nov. 1 22 49.70 38 13.6 6.320 6.965 127 17.9 20:06 (180, 87) C/2025 L2 ( MAPS ) Now it is 17.6 mag (Sept. 29, ATLAS Chile). It stays 18 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) Oct. 25 20 20.18 -57 43.8 2.841 2.892 82 17.9 18:38 ( 4, -3) Nov. 1 20 21.96 -58 11.2 2.924 2.878 77 17.9 18:31 ( 7, -4) C/2025 R3 ( PanSTARRS ) It is expected to brighten up to 7 mag in 2026 April. Now it is 18.9 mag (Sept. 19, Roland Fichtl). It will brighten rapidly after this. It will be unobservable in February in the Northern Hemisphere, or in December in the Southern Hemisphere. At the high light, it is observable in the low sky before the perihelion passage in the Northern Hemisphere, or after the perihelion in the Southern Hemisphere. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 23 49.47 37 6.1 2.202 3.048 141 18.1 21:32 (180, 88) Nov. 1 23 31.42 35 35.3 2.163 2.958 135 17.9 20:47 (180, 89) C/2013 C2 ( Tenagra ) It brightened in major outburst of 5 mag. Now it is 18.1 mag (Oct. 11, John Maikner). It stays 18 mag for a while. It will be getting lower gradually. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 19 45.80 -3 21.9 15.031 15.003 86 18.0 18:38 ( 26, 49) Nov. 1 19 46.57 -3 26.5 15.157 15.016 80 18.1 18:31 ( 33, 46) 486P/2024 H1 ( Leonard ) Now it is 16.5 mag (Oct. 3, ATLAS Chile). Fading gradually. It stays observable in good condition. Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h) Oct. 25 0 10.06 2 40.5 1.752 2.670 151 18.2 21:54 ( 0, 58) Nov. 1 0 7.97 2 18.2 1.823 2.692 144 18.4 21:25 ( 0, 57) 489P/Denning It had been lost for 113 years. It will pass the perihelion on Dec. 4. It brightened up to 18 mag in outburst in 2007. 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) Oct. 25 9 36.03 18 28.6 1.641 1.623 71 22.6 4:49 (286, 52) Nov. 1 9 56.42 16 53.7 1.580 1.603 73 22.5 4:55 (291, 54)