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Now it is 7.4 mag (Dec. 24, Osamu Miyazaki). 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)
Dec. 30 11 26.84 13 22.0 0.525 1.265 110 7.2 4:55 ( 0, 68)
Jan. 6 11 46.75 12 17.2 0.515 1.272 112 7.2 4:47 ( 0, 67)
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It returns for the first time in 70 years. It will brighten up to 4.5 mag in spring. It suddenly brightened in major outburst by 5 mag up to 11.5 mag on July 20 (E. Tamas, Francois Kugel). It brightened again in another major outburst up to 9.4 mag on Nov. 15 (Nick James). Now it is 9.4 mag (Dec. 13, Carlos Labordena). It will brighten rapidly after this. In the Northern Hemisphere, it will be unobservable in April. In the Southern Hemisphere, it is not observable now, but it will appear in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 19 31.24 37 44.4 2.283 2.025 62 7.9 18:27 (119, 26)
Jan. 6 19 51.06 37 47.9 2.202 1.935 61 7.7 18:32 (121, 24)
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It is expected to brighten up to 9 mag in early 2024. Now it is 10.7 mag (Dec. 10, Taras Prystavski). It stays 10 mag for a while. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it stays observable in good condition. The brightness evolution slowed down since May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 14 43.23 -38 3.3 1.901 1.491 50 10.1 5:36 (330, 8)
Jan. 6 15 8.60 -36 34.0 1.821 1.446 52 10.0 5:38 (330, 10)
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It is expected to brighten up to 8.5 mag from January to February. Now it is 11.9 mag (Dec. 21, Ken-ichi Kadota). It will turn to fade out rapidly after brightening. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 3 2.69 14 25.8 0.588 1.432 129 10.9 20:30 ( 0, 70)
Jan. 6 3 12.69 14 23.8 0.603 1.417 124 10.2 20:12 ( 0, 69)
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It approached to Earth down to 0.38 a.u., and brightened up to 8.0 mag in autumn (Sept. 29, Virgilio Gonano). Now it is 12.2 mag (Dec. 22, Osamu Miyazaki). 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)
Dec. 30 8 50.47 -14 33.6 0.652 1.486 129 11.3 2:20 ( 0, 40)
Jan. 6 8 42.06 -14 28.4 0.680 1.545 135 11.6 1:44 ( 0, 40)
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Now it is 13.3 mag (Dec. 16, Michael Mattiazzo). It will fade out rapidly after this. It will be fainter than 18 mag in April. In the Northern Hemisphere, it is not observable now, but it will appear in February. In the Southern Hemisphere, it will be unobservable soon. But it will be observable again in February. It seems to brighten up to 11 mag in January. However, it is not observable in the Northern Hemisphere. It locates extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 21 15.52 -38 12.4 1.468 0.913 37 12.2 18:27 ( 41, 0)
Jan. 6 21 2.54 -37 45.0 1.576 0.868 29 11.6 18:32 ( 48, -6)
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Now it is 11.8 mag (Dec. 16, Taras Prystavski). Fading slowly. In the Northern Hemisphere, it will be unobservable soon. In the Southern Hemisphere, it will be getting lower gradually. But it will be getting higher again after March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 23 16.86 -41 25.3 3.788 3.419 60 12.2 18:27 ( 20, 10)
Jan. 6 23 17.80 -41 2.2 3.933 3.474 55 12.4 18:32 ( 25, 8)
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It approached to Earth down to 0.2 a.u. in early November, and brightened up to 6.2 mag (Nov. 11, Marco Goiato). Now it is 10.5 mag (Dec. 12, Thomas Lehmann). Fading rapidly. In the Northern Hemisphere, it will be unobservable soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 23 6.80 -42 21.2 1.619 1.394 58 12.7 18:27 ( 21, 9)
Jan. 6 23 15.57 -42 39.6 1.803 1.481 55 13.2 18:32 ( 25, 6)
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It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 11.3 mag (Dec. 17, Osamu Miyazaki). Fading slowly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 5 39.33 -3 15.5 3.715 4.596 150 12.7 23:04 ( 0, 52)
Jan. 6 5 32.49 -2 15.2 3.806 4.658 146 12.8 22:30 ( 0, 53)
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It will brighten up to 12 mag from 2024 to 2025. Now it is 13.5 mag (Dec. 25, Giuseppe Pappa). It stays 13 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)
Dec. 30 9 12.27 12 28.4 3.517 4.325 140 12.9 2:42 ( 0, 67)
Jan. 6 9 3.28 13 57.0 3.410 4.293 150 12.8 2:05 ( 0, 69)
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Now it is 13.7 mag (Dec. 12, Kunihiro Shima). It will fade out rapidly after this. It will be fainter than 18 mag in February. It stays extremely low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 16 19.34 -19 43.1 1.798 1.086 31 13.5 5:36 (302, 9)
Jan. 6 16 50.16 -18 59.7 1.805 1.095 31 13.0 5:38 (301, 9)
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Now it is 13.6 mag (Dec. 8, Taras Prystavski). 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)
Dec. 30 10 7.93 -41 37.5 4.119 4.372 98 13.3 3:37 ( 0, 13)
Jan. 6 9 57.15 -42 56.9 4.074 4.406 103 13.3 2:59 ( 0, 12)
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Now it is 12.4 mag (Dec. 24, Osamu Miyazaki). It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 8 35.96 20 44.0 5.283 6.166 151 13.5 2:05 ( 0, 76)
Jan. 6 8 32.99 20 50.6 5.238 6.168 159 13.5 1:35 ( 0, 76)
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It brightened up to 7.8 mag in late July (July 20, Thomas Lehmann). Now it is 16.0 mag (Dec. 22, Yukihiro Sugiyama). Fading slowly. 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)
Dec. 30 15 16.51 -5 46.1 3.013 2.504 50 13.9 5:36 (303, 30)
Jan. 6 15 15.85 -4 46.3 2.957 2.573 57 14.0 5:38 (309, 35)
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Now it is 15.5 mag (Dec. 22, Yukihiro Sugiyama). Brightening slowly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting higher gradually. It is expected to brighten up to 12.5 mag in 2024 spring. At the high light, it will be observable in excellent condition in the Southern Hemisphere, but it will be low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 15 31.23 -17 21.5 3.438 2.800 42 14.0 5:36 (309, 19)
Jan. 6 15 31.84 -18 43.2 3.315 2.781 49 13.9 5:38 (315, 22)
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It will approach to Sun down to 0.4 a.u. in late September in 2024, and it is expected to brighten up to 0 mag. Now it is 13.9 mag (Dec. 21, Yukihiro Sugiyama). It will brighten rapidly after this. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting higher gradually. 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)
Dec. 30 15 0.31 -7 14.8 4.783 4.271 53 14.2 5:36 (307, 31)
Jan. 6 15 3.32 -7 28.4 4.601 4.192 59 14.0 5:38 (314, 35)
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It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 15.7 mag (Dec. 18, ATLAS Chile). It stays 15 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)
Dec. 30 11 28.69 -49 19.7 7.078 7.016 82 14.2 4:57 ( 0, 6)
Jan. 6 11 28.32 -50 11.5 7.047 7.061 86 14.2 4:29 ( 0, 5)
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It approached to Sun down to 0.23 a.u. and brightened up to 2.5 mag in mid September (Sept. 18, Juan Jose Gonzalez). Now it is 11.8 mag (Dec. 16, Martin Masek). It will fade out rapidly after this. In the Northern Hemisphere, it will be unobservable soon. But it will be observable again in February. In the Southern Hemisphere, it stays observable in good condition. It is brighter than this ephemeris recently.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 12 11.70 -52 11.1 2.248 2.209 75 14.2 5:36 (359, 3)
Jan. 6 11 55.67 -54 7.3 2.251 2.316 81 14.4 4:57 ( 0, 1)
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Now it is 14.9 mag (Dec. 19, 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)
Dec. 30 12 6.77 -36 57.5 5.410 5.350 81 14.4 5:35 ( 0, 18)
Jan. 6 12 9.62 -37 27.3 5.299 5.330 86 14.4 5:11 ( 0, 17)
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Now it is 14.3 mag (Dec. 12, Thomas Lehmann). It stays 15 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)
Dec. 30 2 42.30 18 24.3 1.529 2.253 126 14.7 20:09 ( 0, 74)
Jan. 6 2 43.36 18 59.5 1.573 2.227 119 14.7 19:42 ( 0, 74)
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It will approach to Earth down to 0.2 a.u. from February to March, and it is expected to brighten up to 13 mag. Now it is 16.7 mag (Dec. 25, ATLAS Chile). It will turn to fade out rapidly after brightening. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 0 23.41 -13 48.3 0.555 1.063 82 15.0 18:27 ( 12, 41)
Jan. 6 0 37.61 -14 23.1 0.525 1.018 78 14.7 18:32 ( 17, 39)
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It brightened up to 12.1 mag in spring (May 20, Jose Guilherme de S. Aguiar). Now it is 15.0 mag (Dec. 26, ATLAS Chile). Fading slowly. 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)
Dec. 30 4 25.84 -83 49.5 4.000 3.814 72 14.7 21:45 ( 0,-29)
Jan. 6 4 1.33 -81 43.4 4.019 3.853 73 14.8 20:56 ( 0,-26)
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It brightened up to 11.1 mag in early 2022 (Mar. 31, 2022, F. Kugel, J.-G. Bosch, J. Nicolas). Now it is 15.5 mag (Dec. 17, A. 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 February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 16 59.90 16 43.9 6.867 6.225 46 15.2 5:36 (265, 23)
Jan. 6 17 5.49 17 8.5 6.861 6.263 49 15.3 5:38 (268, 28)
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Now it is 15.3 mag (Dec. 25, ATLAS Chile). Fading gradually. It will be fainter than 18 mag in April. 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 March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 0 47.60 -10 32.9 1.493 1.774 89 15.4 18:27 ( 4, 45)
Jan. 6 0 53.60 -6 8.1 1.564 1.776 85 15.4 18:32 ( 15, 48)
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Now it is 15.8 mag (Dec. 13, Ken-ichi Kadota). It stays 16 mag for a while. It will be unobservable soon in the Southern Hemisphere, or in February in the Northern Hemisphere. But it will be observable again in March in the Northern Hemisphere, or in April in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 30.38 3 40.8 4.158 3.825 63 15.4 18:27 ( 57, 43)
Jan. 6 22 30.17 4 0.9 4.308 3.859 56 15.5 18:32 ( 65, 38)
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Bright new comet. Now it is 15.6 mag (Dec. 21, Katsumi Yoshimoto). It will fade out rapidly after this. It will be fainter than 18 mag in February. 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)
Dec. 30 13 46.98 55 29.9 1.045 1.546 99 15.5 5:36 (212, 64)
Jan. 6 14 20.90 65 23.2 1.100 1.631 102 15.8 5:38 (199, 56)
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It returned for the first time in 68 years. It will brighten up to 7.5 mag in 2024 summer. Now it is 15.5 mag (Dec. 18, Michael Jager). It will brighten rapidly after this. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually. At the high light, it locates low in the Northern Hemisphere, or it is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 3 4.94 -15 48.1 2.166 2.742 115 15.8 20:31 ( 0, 39)
Jan. 6 2 59.58 -13 58.6 2.169 2.668 109 15.6 19:58 ( 0, 41)
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Now it is 15.9 mag (Dec. 28, 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)
Dec. 30 4 35.16 -11 48.4 6.339 7.064 134 15.9 22:01 ( 0, 43)
Jan. 6 4 33.07 -11 22.5 6.364 7.033 129 15.9 21:31 ( 0, 44)
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Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.9 mag (Dec. 2, Taras Prystavski). 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)
Dec. 30 2 55.51 -65 30.0 16.963 16.857 82 16.0 20:21 ( 0,-10)
Jan. 6 2 53.96 -65 16.0 16.973 16.832 80 15.9 19:52 ( 0,-10)
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Now it is 16.2 mag (Dec. 16, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag in April. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it will be unobservable in March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 23 35.17 2 31.2 2.106 2.125 77 15.9 18:27 ( 36, 52)
Jan. 6 23 47.86 3 40.7 2.180 2.129 73 16.0 18:32 ( 44, 51)
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Now it is 16.0 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag for a while. In the Northern Hemisphere, it will be unobservable in March. 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)
Dec. 30 1 46.92 -29 47.6 3.238 3.435 93 16.1 19:13 ( 0, 25)
Jan. 6 1 43.53 -30 9.2 3.306 3.395 86 16.1 18:42 ( 0, 25)
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New peridic comet which brightened up to 16 mag in 2007. It has not been recovered yet. It was missed in 2013 and 2018. It will approach to Earth down to 0.34 a.u. in winter, and it is expected to brighten up to 16 mag. It will fade out rapidly after this. It will be fainter than 18 mag in February. 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)
Dec. 30 23 6.65 26 22.1 0.337 0.997 82 16.1 18:27 ( 79, 65)
Jan. 6 0 26.36 35 30.7 0.368 1.084 95 16.5 18:32 ( 99, 77)
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Now it is 17.1 mag (Dec. 28, Jean-Claude Merlin). 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)
Dec. 30 8 37.17 -68 36.1 3.742 3.793 85 16.2 2:06 ( 0,-14)
Jan. 6 8 11.59 -70 26.6 3.744 3.807 86 16.2 1:13 ( 0,-15)
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It has not been observed yet in this apparition. It was expected to brighten up to 15 mag in summer. But actually, it is not detected, fainter than 18 mag (Oct. 14, Martin Masek). Fading slowly. It will be fainter than 18 mag in April. It will be unobservable soon 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)
Dec. 30 21 18.37 -12 6.4 2.657 2.016 40 16.2 18:27 ( 59, 20)
Jan. 6 21 33.84 -10 33.8 2.714 2.027 37 16.3 18:32 ( 63, 18)
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It brightened up to 13 mag in early 2023. It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will appear in February. In the Southern Hemisphere, it will be getting higher gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 15 50.35 -48 26.8 4.118 3.435 40 16.3 5:36 (327, -7)
Jan. 6 15 59.35 -48 22.0 4.124 3.494 44 16.3 5:38 (329, -5)
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It continues to be brightening even after the perihelion passage. Now it is 15.3 mag (Dec. 17, Ken-ichi Kadota). It will fade out rapidly after this. It will be fainter than 18 mag in February. In the Northern Hemisphere, it will be getting lower gradually. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 23 59.25 -13 53.5 3.707 3.612 76 16.3 18:27 ( 19, 39)
Jan. 6 0 5.08 -12 41.0 3.844 3.656 71 16.6 18:32 ( 28, 38)
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It is expected to brighten up to 12.5 mag in 2024 summer. Now it is 17.1 mag (Dec. 20, E. Cortes). Brightening gradually. In the Northern Hemisphere, it is not observable now. 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)
Dec. 30 14 12.17 -58 40.6 4.575 4.131 57 16.5 5:36 (344, -7)
Jan. 6 14 24.39 -59 56.1 4.469 4.077 60 16.4 5:38 (347, -8)
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It brightened up to 9.5 mag from last winter to early spring (Jan. 30, Katsumi Yoshimoto). Now it is 15.5 mag (Dec. 8, Ken-ichi Kadota). Fading slowly. It will be fainter than 18 mag in March. It will be unobservable in February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 45.06 -14 11.6 4.465 4.061 59 16.4 18:27 ( 39, 31)
Jan. 6 22 48.88 -14 22.9 4.632 4.125 53 16.6 18:32 ( 46, 27)
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It will be observable at 15-16 mag from 2024 to 2025. Now it is 17.6 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). Brightening slowly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 13 4.09 2 7.0 3.747 3.770 83 16.8 5:36 (335, 55)
Jan. 6 13 8.35 1 51.3 3.627 3.754 89 16.7 5:38 (346, 56)
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It brightened up to 12.6 mag in autumn (Oct. 3, Chris Wyatt). Now it is 17.5 mag (Dec. 7, Toshihiko Ikemura, Hirohisa Sato). Fading rapidly. It will be fainter than 18 mag soon. In the Northern Hemisphere, it will be getting lower gradually. It stays extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 52.92 3 36.3 1.679 1.607 68 16.7 18:27 ( 50, 47)
Jan. 6 23 16.47 4 41.8 1.799 1.685 67 17.1 18:32 ( 54, 47)
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Now it is 16.8 mag (Dec. 8, 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 unobservable in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 4 37.28 41 30.3 5.822 6.689 149 16.7 22:03 (180, 83)
Jan. 6 4 35.11 41 19.9 5.872 6.689 143 16.7 21:34 (180, 84)
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Now it is 16.5 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. It will be fainter than 18 mag in March. In the Northern Hemisphere, it stays observable in good condition. In the Southern Hemisphere, it will be getting lower gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 3 17.59 4 52.6 2.514 3.229 129 16.7 20:44 ( 0, 60)
Jan. 6 3 17.14 5 18.9 2.607 3.244 122 16.8 20:16 ( 0, 60)
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Now it is 16.7 mag (Dec. 17, A. Diepvens). 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. But it will become high in autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 4 40.43 34 5.2 4.204 5.100 153 16.7 22:06 ( 0, 89)
Jan. 6 4 37.85 33 20.1 4.237 5.083 146 16.7 21:36 ( 0, 88)
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It brightened up to 13.6 mag in summer (July 16, Mitsunori Tsumura). Now it is 16.2 mag (Dec. 27, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag in February. 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)
Dec. 30 23 42.64 64 5.1 2.063 2.511 105 16.8 18:27 (164, 59)
Jan. 6 23 55.17 63 38.8 2.153 2.559 102 17.0 18:32 (160, 58)
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Now it is 17.3 mag (Dec. 25, ATLAS-HKO, Haleakala). 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. But it will become high in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 7 42.62 36 53.0 0.801 1.756 159 17.0 1:12 (180, 88)
Jan. 6 7 39.64 37 50.4 0.768 1.732 162 16.8 0:42 (180, 87)
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Very far object. Now it is 16.8 mag (Dec. 14, 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)
Dec. 30 2 38.54 -74 58.4 10.525 10.316 75 16.8 20:03 ( 0,-20)
Jan. 6 2 30.33 -74 13.5 10.547 10.317 73 16.8 19:27 ( 0,-19)
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It brightens up to 16 mag from January to February. Now it is 16.8 mag (Dec. 16, Hidenori Nohara). 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)
Dec. 30 9 13.38 -0 27.9 1.060 1.885 134 17.1 2:42 ( 0, 55)
Jan. 6 9 12.69 -3 1.1 1.001 1.861 139 16.9 2:14 ( 0, 52)
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Now it is 18.2 mag (Dec. 24, ATLAS Chile). It stays 17 mag for a while. It locates somewhat low in the Northern Hemisphere. But it will become high in summer. In the Southern Hemisphere, it stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 13 23.24 -25 6.9 3.691 3.475 69 16.9 5:36 (341, 27)
Jan. 6 13 31.19 -25 50.0 3.595 3.467 74 16.9 5:38 (346, 28)
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Now it is 17.7 mag (Sept. 14, Jean-Claude Merlin). It stays 16 mag for a while. In the Northern Hemisphere, it is not observable now, but it will be observable soon. In the Southern Hemisphere, it will be getting higher gradually. It stays 16 mag in the Southern sky for a long time from 2024 to 2025.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 16 47.71 -41 59.4 6.834 5.992 28 16.9 5:36 (315,-10)
Jan. 6 16 49.94 -42 26.3 6.754 5.966 34 16.9 5:38 (318, -7)
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It approached to Earth down to 0.29 a.u. in early February, and it brightened up to 4.5 mag (Feb. 1, Juan Jose Gonzalez). Now it is 17.2 mag (Dec. 15, Jean-Claude Merlin). Fading slowly. It will be fainter than 18 mag in March. 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)
Dec. 30 3 36.68 -61 14.0 4.542 4.620 88 16.9 21:01 ( 0, -6)
Jan. 6 3 25.81 -60 15.9 4.652 4.689 86 17.0 20:23 ( 0, -5)
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It is expected to brighten up to 13 mag in early summer in 2024. Now it is 17.0 mag (Dec. 22, ATLAS Chile). Brightening gradually. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in April. At the high light, it is not observable in the Southern Hemisphere, or it locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 2 15.38 -37 15.7 2.223 2.499 94 17.2 19:41 ( 0, 18)
Jan. 6 2 9.09 -34 6.9 2.212 2.418 89 17.1 19:07 ( 0, 21)
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First return of a new periodic comet which brightened up to 10 mag in 2001. It is expected to brighten up to 12-13 mag from February to March in 2024. Now it is 16.7 mag (Dec. 21, Ken-ichi Kadota). It will brighten rapidly after this. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after April. In the Southern Hemisphere, it will be unobservable soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 23 12.23 -4 52.6 1.649 1.596 69 17.1 18:27 ( 38, 43)
Jan. 6 23 16.62 -0 42.1 1.691 1.556 65 17.1 18:32 ( 49, 42)
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Now it is 16.5 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). It stays 18 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 March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 0 14.15 -4 58.8 3.866 3.882 83 17.1 18:27 ( 18, 49)
Jan. 6 0 18.16 -4 16.1 3.986 3.898 77 17.2 18:32 ( 28, 47)
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Now it is 16.9 mag (Dec. 22, ATLAS Chile). It stays 17 mag for a while. In the Northern Hemisphere, it will be unobservable in April. In the Southern Hemisphere, it stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 4 53.07 -40 24.2 7.270 7.696 112 17.1 22:18 ( 0, 15)
Jan. 6 4 50.81 -39 58.0 7.279 7.673 110 17.1 21:49 ( 0, 15)
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It brightened up to 14.1 mag in 2022 spring (Mar. 22, 2022, Chris Wyatt). Now it is 16.8 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). It stays 18 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 March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 1 19.03 0 34.0 5.670 5.932 100 17.1 18:45 ( 0, 56)
Jan. 6 1 17.47 1 5.9 5.839 5.980 93 17.2 18:32 ( 7, 56)
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Now it is 17.5 mag (Dec. 28, ATLAS-MLO, Mauna Loa). Fading slowly. It will be fainter than 18 mag in March. 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)
Dec. 30 11 23.24 -15 45.6 1.784 2.170 99 17.4 4:52 ( 0, 39)
Jan. 6 11 9.13 -19 41.1 1.700 2.197 106 17.4 4:11 ( 0, 35)
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Now it is 17.5 mag (Dec. 11, ATLAS-MLO, Mauna Loa). It stays 18 mag for a while. In the Northern Hemisphere, it will be getting lower gradually. But it will be getting higher again after March. In the Southern Hemisphere, it is not observable now.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 34.23 41 28.3 4.230 4.265 85 17.4 18:27 (114, 61)
Jan. 6 22 33.25 40 20.0 4.323 4.255 79 17.5 18:32 (112, 54)
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Fading slowly. It will be fainter than 18 mag soon. In the Northern Hemisphere, it will be getting lower gradually. It stays extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 33.13 11 11.1 1.487 1.442 67 17.5 18:27 ( 64, 49)
Jan. 6 22 53.02 12 9.5 1.631 1.522 65 17.7 18:32 ( 68, 48)
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Now it is 17.5 mag (Dec. 16, ATLAS-MLO, Mauna Loa). 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)
Dec. 30 12 31.56 14 13.3 9.186 9.339 95 17.6 5:36 (344, 68)
Jan. 6 12 30.18 14 38.6 9.078 9.353 103 17.6 5:31 ( 0, 70)
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First return of a new periodic comet which was discovered in 2011, half a year after the perihelion passage. It is expected to brighten up to 14.5 mag in spring. It will brighten rapidly after this. It stays observable in good condition. Maik Meyer pointed out the identification of Asteroid 2023 WM26 and this comet.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 8 51.84 17 50.5 1.149 2.046 147 17.9 2:21 ( 0, 73)
Jan. 6 8 48.53 16 45.6 1.049 1.984 154 17.6 1:50 ( 0, 72)
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It brightened up to 11.8 mag in summer (June 17, Osamu Miyazaki). Now it is 17.3 mag (Dec. 15, Catalina Sky Survey). Fading gradually. It will be fainter than 18 mag soon. 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)
Dec. 30 21 58.51 0 0.6 3.068 2.629 54 17.6 18:27 ( 61, 35)
Jan. 6 22 9.82 0 43.7 3.169 2.659 50 17.8 18:32 ( 66, 32)
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Now it is 17.5 mag (Dec. 14, Jean-Claude Merlin). 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)
Dec. 30 6 56.60 9 11.5 6.808 7.762 164 17.7 0:26 ( 0, 64)
Jan. 6 6 50.41 9 9.7 6.805 7.763 166 17.7 23:48 ( 0, 64)
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It brightened up to 13.9 mag in early 2023 (Jan. 21, Hidenori Nohara). Now it is 18.7 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). It stays 18 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)
Dec. 30 14 19.17 6 22.8 4.742 4.480 68 17.7 5:36 (306, 48)
Jan. 6 14 24.45 6 23.7 4.687 4.520 74 17.8 5:38 (313, 52)
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Now it is 17.1 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). 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.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 1 23.87 -1 1.0 2.289 2.661 101 17.8 18:50 ( 0, 54)
Jan. 6 1 26.82 -0 16.4 2.346 2.623 95 17.8 18:32 ( 3, 55)
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Now it is 18.5 mag (Dec. 21, Giuseppe Pappa). Fading slowly. It will be fainter than 18 mag in March. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 11 54.07 7 3.8 1.697 2.128 101 17.9 5:23 ( 0, 62)
Jan. 6 12 1.04 6 4.7 1.622 2.127 106 17.8 5:02 ( 0, 61)
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Now it is 17.2 mag (Dec. 19, ATLAS-MLO, Mauna Loa). Fading gradually. It will be fainter than 18 mag soon. 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)
Dec. 30 22 47.94 76 38.4 1.477 1.997 106 17.9 18:27 (170, 46)
Jan. 6 23 44.72 76 33.5 1.474 2.003 107 17.9 18:32 (171, 47)
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Far asteroid moving along a cometary orbit. It brightens up to 18 mag from 2024 to 2025. 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)
Dec. 30 8 59.95 50 30.2 8.016 8.798 140 17.9 2:30 (180, 75)
Jan. 6 8 53.14 50 43.9 7.972 8.794 144 17.9 1:55 (180, 74)
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Now it is 18.2 mag (Dec. 26, Giuseppe Pappa). 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)
Dec. 30 4 33.33 22 45.2 3.239 4.136 152 17.9 21:59 ( 0, 78)
Jan. 6 4 30.25 22 26.7 3.297 4.137 144 17.9 21:29 ( 0, 77)
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It brightened up to 13.4 mag in 2022 summer (July 7, 2022, Giuseppe Pappa). Now it is 18.6 mag (Oct. 2, ATLAS-HKO, Haleakala). 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)
Dec. 30 16 17.16 33 46.8 5.626 5.296 65 17.9 5:36 (252, 39)
Jan. 6 16 20.67 34 50.2 5.612 5.345 69 17.9 5:38 (253, 45)
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Now it is 16 mag (Dec. 27, Giuseppe Pappa). Brightening slowly. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting higher gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 14 43.24 -24 2.8 3.722 3.217 52 18.0 5:36 (322, 20)
Jan. 6 14 52.65 -24 46.8 3.636 3.211 57 17.9 5:38 (327, 22)
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Now it is 19.9 mag (Dec. 22, Giuseppe Pappa). Fading slowly. It locates somewhat low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 30 22 47.19 -14 19.2 2.016 1.751 60 18.3 18:27 ( 39, 32)
Jan. 6 23 3.43 -12 11.3 2.070 1.753 57 18.4 18:32 ( 44, 31)
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