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Now it is 7.7 mag (Sept. 7, Juan Jose Gonzalez). It will fade out rapidly after this. It locates somewhat low in the Northern Hemisphere. But it will become high in autumn. In the Southern Hemisphere, it stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 22 29.99 -35 13.7 0.532 1.481 147 8.9 23:05 ( 0, 20)
Sept.19 22 36.05 -35 3.2 0.574 1.504 143 9.2 22:44 ( 0, 20)
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It approached to Earth down to 0.17 a.u. mid August. Now it is 11.0 mag (Sept. 9, Mike Olason). It will fade out rapidly after this. It will be fainter than 18 mag in November. It locates somewhat low in the Northern Hemisphere. It stays extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 9 32.17 11 4.8 0.465 0.631 27 10.1 4:14 (261, 7)
Sept.19 9 33.70 8 3.9 0.585 0.606 33 10.3 4:20 (269, 12)
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Major outburst of about 9 mag occured from May 31 to June 1, and it brightened up to 8.3 mag (June 3, Marco Goiato). Another major outburst occued on Aug. 5 and it brightened up to 6.4 mag (Aug. 6, Taras Prystavski). Now it is 11.5 mag (Sept. 4, Chris Wyatt). Fading rapidly. 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)
Sept.12 3 27.99 8 3.9 1.082 1.778 116 10.9 4:06 ( 0, 63)
Sept.19 3 31.57 7 21.1 1.058 1.809 122 11.6 3:42 ( 0, 62)
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It is expected to brighten up 10 mag from autumn to winter, and it will be observable in good condition. Now it is 11.5 mag (Sept. 9, Michael Jager). Brightening 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 November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 2 11.31 -16 54.2 0.753 1.634 136 12.3 2:50 ( 0, 38)
Sept.19 1 26.37 -14 53.4 0.620 1.578 151 11.6 1:39 ( 0, 40)
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Now it is 12.9 mag (Sept. 3, Jean-Gabriel Bosch). It stays 13 mag for a while. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 5 37.99 -13 5.6 4.300 4.354 86 13.1 4:14 (324, 34)
Sept.19 5 41.04 -13 12.7 4.188 4.327 91 13.0 4:20 (332, 37)
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Now it is 13.7 mag (Aug. 24, Hiroshi Abe). It will fade out rapidly after this. 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)
Sept.12 5 0.57 37 45.5 1.069 1.480 90 13.1 4:14 (255, 73)
Sept.19 5 18.22 39 45.3 1.053 1.504 93 13.2 4:20 (246, 76)
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It brightened up to 9.6 mag in the very low sky in spring (Apr. 14, Chris Wyatt). Now it is 13.0 mag (Aug. 24, Hiroshi Abe). 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)
Sept.12 3 17.21 15 2.3 1.570 2.227 117 13.1 3:55 ( 0, 70)
Sept.19 3 15.64 15 1.0 1.541 2.273 125 13.3 3:26 ( 0, 70)
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Now it is 13.5 mag (Aug. 16, Ken-ichi Kadota). It stays 14 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)
Sept.12 6 48.30 18 52.8 2.275 2.106 67 13.3 4:14 (278, 45)
Sept.19 7 1.00 18 16.2 2.222 2.124 71 13.3 4:20 (283, 49)
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Now it is 13.4 mag (Aug. 24, Purple Mountain Observatory, XuYi Station). It stays 14 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)
Sept.12 18 30.91 42 59.0 3.619 3.920 99 13.5 19:37 (145, 80)
Sept.19 18 27.97 42 39.0 3.661 3.910 96 13.6 19:26 (131, 77)
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Now it is 14.5 mag (Sept. 7, Toru Yusa). Brightening slowly. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it is not observable now, but it will appear in November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 16 54.40 73 13.7 2.171 2.296 84 14.4 19:37 (167, 49)
Sept.19 17 16.58 71 51.0 2.083 2.253 86 14.2 19:26 (166, 50)
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Now it is 13.6 mag (Aug. 2, Andrew Pearce). Now it is not observable. It will appear in October 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)
Sept.12 11 51.33 -5 49.4 7.295 6.318 13 14.3 19:37 ( 95,-18)
Sept.19 11 56.06 -6 21.9 7.310 6.318 8 14.3 19:26 ( 97,-21)
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Very large comet. Now it is 13.9 mag (Aug. 16, Thomas Lehmann). It stays 14 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)
Sept.12 7 22.94 -70 34.0 13.689 13.627 84 14.5 4:14 (343,-23)
Sept.19 7 27.77 -70 58.7 13.685 13.607 83 14.5 4:20 (345,-22)
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Now it is 14.7 mag (Sept. 7, Andrew Pearce). It stays 15 mag for a while. It will be unobservable in October in the Northern Hemisphere, or in November in the Southern Hemisphere. But it will be observable again in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 15 28.43 -16 3.6 4.142 3.825 64 14.5 19:37 ( 54, 18)
Sept.19 15 27.46 -16 40.2 4.285 3.848 58 14.6 19:26 ( 57, 15)
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Now it is 14.4 mag (Sept. 5, Alfons Diepvens). It stays 14 mag for a while. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be unobservable in November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 20 19.90 49 1.3 5.016 5.502 113 14.6 20:54 (180, 76)
Sept.19 20 11.28 48 29.3 5.014 5.470 111 14.6 20:18 (180, 76)
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Now it is 16.9 mag (May 17, Kunihiro Shima). It stays 15 mag for a while. In the Northern Hemisphere, it will be unobservable soon. But it will be observable again in September. In the Southern Hemisphere, it is not observable now, but it will appear in November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 10 38.34 19 51.8 3.092 2.160 18 15.0 4:14 (245, -1)
Sept.19 10 53.68 18 19.8 3.069 2.159 20 15.0 4:20 (249, 2)
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Now it is 13.8 mag (Aug. 2, Thomas Lehmann). It will fade out rapidly after this. It will be fainter than 18 mag in December. In the Northern Hemisphere, it is not observable now, but it will appear in December. In the Southern Hemisphere, it will be unobservable temporarily in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 12 18.03 -6 34.5 3.015 2.084 18 15.0 19:37 ( 90,-13)
Sept.19 12 32.12 -8 44.8 3.055 2.106 15 15.1 19:26 ( 89,-14)
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It has not been observed yet in this apparition. It has brightened up to 4 mag in 2016, and 10 mag in 2021. Brightening rapidly. It stays extremely low in the Northern Hemisphere. In the Southern Hemisphere, it will be unobservable in October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 9 13.79 9 21.1 2.009 1.265 31 15.8 4:14 (266, 10)
Sept.19 9 40.50 7 26.4 1.952 1.212 31 15.2 4:20 (268, 10)
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Now it is 15.5 mag (June 14, Alfons Diepvens). It stays 16 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 November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 10 53.89 27 3.3 6.998 6.088 23 15.6 4:14 (237, 1)
Sept.19 11 0.27 26 50.0 6.986 6.110 27 15.6 4:20 (241, 6)
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Now it is 17.4 mag (Aug. 30, ATLAS-MLO, Mauna Loa). 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 November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 5 54.01 30 24.8 1.221 1.445 80 15.9 4:14 (269, 61)
Sept.19 6 18.16 32 59.0 1.184 1.442 81 15.7 4:20 (265, 64)
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Now it is 15.9 mag (Sept. 1, ATLAS-HKO, Haleakala). It stays 16 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)
Sept.12 7 13.65 25 53.6 5.561 5.172 62 15.9 4:14 (266, 43)
Sept.19 7 18.43 25 46.2 5.501 5.211 68 15.9 4:20 (270, 49)
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Now it is 16.1 mag (Aug. 5, Ken-ichi Kadota). Brightening slowly. It will be unobservable soon. But it will be observable again in November 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)
Sept.12 13 23.55 -0 15.9 5.559 4.729 31 16.0 19:37 ( 86, 4)
Sept.19 13 29.66 -0 50.5 5.555 4.677 26 15.9 19:26 ( 88, 2)
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It is expected to brighten up to 12 mag from 2027 to 2028. Now it is 15.9 mag (Aug. 28, Jean-Claude Merlin). It stays 16 mag for a while. 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)
Sept.12 18 59.56 -21 14.8 4.536 5.044 114 16.0 19:37 ( 1, 34)
Sept.19 18 53.91 -21 20.0 4.609 4.993 106 16.0 19:26 ( 7, 33)
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Now it is 15.8 mag (Aug. 25, Toru Yusa). It stays 17 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after December. 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)
Sept.12 17 1.56 13 47.5 7.390 7.366 84 16.1 19:37 ( 59, 56)
Sept.19 17 3.49 13 27.4 7.515 7.402 79 16.1 19:26 ( 63, 53)
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Now it is 16.5 mag (Aug. 24, Ken-ichi Kadota). Fading slowly. In the Northern Hemisphere, it stays observable in good condition. 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)
Sept.12 7 45.58 23 34.5 1.918 1.571 54 16.3 4:14 (264, 35)
Sept.19 8 5.40 21 34.0 1.878 1.571 56 16.3 4:20 (268, 37)
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It brightened up to 4.0 mag in late April (Apr. 30, Chris Wyatt). It brightened up to 1.3 mag due to the forward scattering in the SOHO LASCO images (Apr. 25, Mikolaj Kaszczyk). Now it is 13.4 mag (Aug. 15, Thomas Lehmann). Fading gradually. It will be fainter than 18 mag in November. 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)
Sept.12 7 37.66 -21 56.5 2.981 2.630 60 16.3 4:14 (305, 9)
Sept.19 7 36.63 -23 19.5 2.990 2.724 65 16.5 4:20 (312, 14)
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Now it is 16.3 mag (Aug. 21, Andrew Pearce). It stays 16 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)
Sept.12 20 15.60 -26 17.5 1.409 2.204 131 16.7 20:51 ( 0, 29)
Sept.19 20 15.26 -26 27.9 1.439 2.169 124 16.6 20:23 ( 0, 29)
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Now it is 17.9 mag (Aug. 13, Andrew Pearce). Fading slowly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 0 41.96 -7 22.2 2.628 3.587 159 16.6 1:20 ( 0, 48)
Sept.19 0 37.53 -7 48.4 2.621 3.603 165 16.7 0:48 ( 0, 47)
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Now it is 17.3 mag (Aug. 14, P.-J. Dekelver). 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)
Sept.12 7 13.11 17 35.6 4.048 3.677 61 16.7 4:14 (275, 39)
Sept.19 7 14.76 16 7.9 3.952 3.691 67 16.7 4:20 (283, 45)
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Now it is 16.7 mag (Sept. 5, Alfons Diepvens). 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)
Sept.12 16 55.80 8 50.0 2.502 2.590 83 16.7 19:37 ( 55, 51)
Sept.19 17 4.75 6 49.6 2.546 2.569 79 16.7 19:26 ( 55, 48)
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Now it is 17.2 mag (June 2, ATLAS Chile). It stays 17 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)
Sept.12 10 53.78 -72 9.4 4.110 3.999 76 17.1 4:14 (338,-39)
Sept.19 11 14.57 -73 39.7 4.130 3.998 75 17.1 4:20 (340,-38)
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Now it is 16.9 mag (Aug. 22, Alfons Diepvens). 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 be unobservable in October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 15 7.27 15 16.2 7.069 6.576 57 17.1 19:37 ( 85, 34)
Sept.19 15 8.58 15 12.0 7.155 6.586 52 17.1 19:26 ( 87, 31)
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Now it is 17.6 mag (May 18, Kunihiro Shima). It stays 17 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 November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 9 22.90 33 45.9 4.803 4.082 39 17.2 4:14 (243, 21)
Sept.19 9 31.47 33 12.6 4.755 4.096 44 17.1 4:20 (246, 25)
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It was observed at 12-13 mag for a long time in 2024. Now it is 17.3 mag (Sept. 5, Toru Yusa). Fading slowly. It will be fainter than 18 mag in November. 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)
Sept.12 22 9.80 28 5.0 6.234 7.069 143 17.3 22:44 ( 0, 83)
Sept.19 22 4.62 27 9.2 6.290 7.113 142 17.3 22:11 ( 0, 82)
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Now it is 17.2 mag (Aug. 12, W. Hasubick). 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)
Sept.12 20 0.25 -3 39.9 4.373 5.084 130 17.3 20:35 ( 0, 51)
Sept.19 20 0.54 -4 27.6 4.467 5.098 124 17.3 20:08 ( 0, 51)
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Fading slowly. It will be fainter than 18 mag in November. 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)
Sept.12 9 15.18 22 9.8 2.890 2.142 34 17.3 4:14 (254, 17)
Sept.19 9 28.85 20 57.2 2.882 2.183 38 17.4 4:20 (258, 20)
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Very far object. 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)
Sept.12 0 18.57 -45 22.1 10.912 11.669 137 17.4 0:57 ( 0, 10)
Sept.19 0 14.77 -45 23.8 10.944 11.686 135 17.4 0:26 ( 0, 10)
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First return of a new periodic comet which was observed at 18 mag in 2018. Now it is 17.2 mag (Sept. 5, ATLAS-MLO, Mauna Loa). Fading slowly. It will be fainter than 18 mag in December. In the Northern Hemisphere, it stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 2 3.97 28 3.4 1.351 2.131 128 17.4 2:42 ( 0, 83)
Sept.19 2 5.44 27 28.8 1.304 2.138 135 17.4 2:16 ( 0, 83)
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It became brighter than expected. It was observed at 13 mag from winter to spring. Now it is 17.2 mag (Aug. 30, ATLAS South Africa). Fading gradually. It will be fainter than 18 mag in October. In the Southern Hemisphere, it will be getting lower gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept.12 17 9.84 -12 37.9 2.593 2.760 88 17.4 19:37 ( 34, 35)
Sept.19 17 17.55 -13 5.3 2.713 2.791 83 17.6 19:26 ( 36, 34)
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First return of a new periodic comet which brightened up to 17 mag in 2021. It approached to Earth down to 0.17 a.u. from June to July. It brightened up to 15.2 mag (July 14, Andrew Pearce). Now it is 17.4 mag (Sept. 7, Toru Yusa). It will fade out rapidly after this. It will be fainter than 18 mag in October. 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)
Sept.12 4 57.45 46 7.7 0.563 1.158 90 17.4 4:14 (228, 71)
Sept.19 5 3.67 46 57.3 0.586 1.212 95 17.6 4:20 (216, 74)
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It will brighten up to 6-7 mag from January to February. Now it is 17.2 mag (Aug. 24, Hidenori Nohara). 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)
Sept.12 1 20.50 20 22.6 1.464 2.335 141 17.7 1:59 ( 0, 76)
Sept.19 1 11.66 20 29.2 1.347 2.269 149 17.4 1:23 ( 0, 76)
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Now it is 17.9 mag (Aug. 24, W. Hasubick). 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)
Sept.12 5 52.78 33 17.0 2.729 2.749 80 17.6 4:14 (264, 62)
Sept.19 6 1.31 33 44.5 2.658 2.767 85 17.5 4:20 (265, 67)
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Now it is 17.3 mag (Sept. 4, ATLAS-MLO, Mauna Loa). It stays 18 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)
Sept.12 16 37.90 78 5.0 8.290 8.239 83 17.6 19:37 (170, 44)
Sept.19 16 42.87 76 53.4 8.267 8.239 84 17.6 19:26 (168, 45)
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Now it is 17.8 mag (July 6, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. 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)
Sept.12 14 35.77 59 23.4 5.772 5.450 66 17.6 19:37 (141, 41)
Sept.19 14 43.65 57 50.1 5.795 5.469 66 17.7 19:26 (139, 40)
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Now it is 18.2 mag (Sept. 5, Katsumi Yoshimoto). It will brighten rapidly after this. In the Northern Hemisphere, it stays observable in good condition. 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)
Sept.12 1 26.87 37 56.1 0.686 1.530 128 18.0 2:05 (180, 87)
Sept.19 1 37.73 38 58.3 0.631 1.500 131 17.8 1:48 (180, 86)
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