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Now it is 8.0 mag (Dec. 13, 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. 16 10 40.21 15 49.2 0.556 1.269 107 7.4 2:53 (217, 31)
Dec. 23 11 4.52 14 33.9 0.538 1.264 108 7.2 2:56 (216, 32)
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It returns for the first time in 70 years. It will brighten up to 4.5 mag in 2024 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. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it is not observable now.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 18 56.65 37 55.5 2.442 2.203 64 8.3 20:56 (114,-38)
Dec. 23 19 13.15 37 46.5 2.363 2.115 63 8.1 21:01 (112,-41)
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It is expected to brighten up to 8.5 mag in early 2024. Now it is 11.6 mag (Dec. 11, Chris Wyatt). Brightening slowly. It locates somewhat low in the Northern Hemisphere. But it will become high in winter. The brightness evolution slowed down since May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 13 52.76 -39 43.9 2.064 1.594 48 10.0 2:53 (301, 28)
Dec. 23 14 17.87 -39 5.9 1.983 1.540 49 9.8 2:56 (300, 29)
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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 8.9 mag (Dec. 9, Marco Goiato). Fading rapidly. In the Northern Hemisphere, it will be unobservable in January. 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. 16 22 47.46 -41 10.1 1.214 1.228 66 11.5 20:56 ( 64, 46)
Dec. 23 22 57.61 -41 53.5 1.422 1.309 62 12.1 21:01 ( 62, 42)
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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 11.2 mag (Dec. 11, Chris Wyatt). Fading rapidly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 9 2.52 -13 3.0 0.608 1.371 116 11.7 2:53 (201, 67)
Dec. 23 8 57.49 -14 5.2 0.628 1.427 123 12.0 2:54 (180, 69)
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It is expected to brighten up to 8.5 mag from January to February. Now it is 12.2 mag (Dec. 12, Toshihiko Ikemura, Hirohisa Sato). Brightening rapidly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 2 50.42 15 10.0 0.572 1.475 141 12.5 21:12 (180, 40)
Dec. 23 2 55.24 14 41.0 0.578 1.452 135 11.7 21:01 (176, 40)
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Now it is 11.8 mag (Dec. 5, Chris Wyatt). Fading slowly. In the Northern Hemisphere, it will be unobservable in January. 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. 16 23 18.10 -42 12.1 3.476 3.311 72 11.9 20:56 ( 64, 51)
Dec. 23 23 16.90 -41 48.9 3.635 3.365 66 12.1 21:01 ( 63, 45)
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It brightened up to 8 mag from 2022 summer to 2023 spring. Now it is 12.1 mag (Dec. 11, Chris Wyatt). Fading slowly. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 5 54.40 -5 3.9 3.584 4.471 151 12.5 0:19 (180, 60)
Dec. 23 5 46.69 -4 12.1 3.641 4.534 152 12.6 23:39 (180, 59)
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It will brighten up to 12 mag from 2024 to 2025. Now it is 13.2 mag (Dec. 12, Toshihiko Ikemura, Hirohisa Sato). 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)
Dec. 16 9 26.55 9 55.7 3.782 4.390 122 13.1 2:53 (200, 43)
Dec. 23 9 20.02 11 7.7 3.642 4.357 131 13.0 2:56 (187, 44)
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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. 16 10 25.04 -38 33.2 4.232 4.305 87 13.2 2:53 (287, 67)
Dec. 23 10 17.23 -40 8.7 4.172 4.338 93 13.2 2:56 (294, 74)
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Now it is 12.4 mag (Dec. 12, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 8 40.68 20 33.5 5.414 6.162 136 13.6 2:53 (183, 34)
Dec. 23 8 38.55 20 38.2 5.342 6.164 143 13.6 2:35 (180, 34)
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It brightened up to 7.8 mag in late July (July 20, Thomas Lehmann). Now it is 12.9 mag (Oct. 3, Chris Wyatt). Fading slowly. In the Northern Hemisphere, it will be getting higher gradually. In the Southern Hemisphere, it is not observable now, but it will be observable soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 15 15.69 -7 25.1 3.089 2.368 36 13.7 2:53 (283, -5)
Dec. 23 15 16.42 -6 38.7 3.057 2.436 43 13.8 2:56 (278, 0)
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Now it is 14.9 mag (Sept. 18, Ken-ichi Kadota). 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. 16 15 28.40 -14 46.0 3.650 2.843 30 14.2 2:53 (291, -3)
Dec. 23 15 30.04 -16 2.8 3.550 2.820 36 14.1 2:56 (288, 3)
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It brightened up to 8.3 mag in 2021-2022 winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is 16.7 mag (Dec. 7, ATLAS South Africa). 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. 16 11 27.50 -47 28.4 7.137 6.926 73 14.1 2:53 (305, 55)
Dec. 23 11 28.41 -48 25.1 7.108 6.971 78 14.2 2:56 (308, 59)
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It will turn to fade out rapidly after brightening. It will be fainter than 18 mag in February. It stays extremely low. It will brighten up to 13 mag in January. But it locates extremely low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 15 16.16 -20 6.4 1.802 1.091 31 15.4 2:53 (293, 3)
Dec. 23 15 47.89 -20 5.7 1.796 1.084 31 14.3 2:56 (293, 2)
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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 14.1 mag (Dec. 8, Yukihiro Sugiyama). It will brighten rapidly after this. 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. 16 14 53.50 -6 40.6 5.117 4.427 41 14.5 2:53 (279, -1)
Dec. 23 14 57.02 -6 58.8 4.955 4.349 47 14.4 2:56 (275, 4)
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Now it is 14.7 mag (Dec. 11, Chris Wyatt). 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. 16 11 59.46 -35 50.7 5.625 5.389 71 14.6 2:53 (287, 48)
Dec. 23 12 3.37 -36 25.2 5.519 5.369 76 14.5 2:56 (286, 53)
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It brightened up to 12.1 mag in spring (May 20, Jose Guilherme de S. Aguiar). Now it is 14.8 mag (Dec. 11, Chris Wyatt). 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.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 7 2.81 -86 43.5 3.963 3.738 69 14.6 1:24 ( 0, 38)
Dec. 23 5 18.09 -85 36.7 3.982 3.776 70 14.7 22:59 ( 0, 40)
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Now it is 13.5 mag (Dec. 5, Chris Wyatt). 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 lower gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 2 45.12 17 28.7 1.461 2.309 140 14.7 21:06 (180, 37)
Dec. 23 2 42.90 17 54.1 1.491 2.280 133 14.7 21:01 (173, 37)
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Bright new comet. Now it is 14.8 mag (Dec. 7, 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. 16 13 3.71 34 4.6 1.044 1.379 85 15.0 2:53 (231, -4)
Dec. 23 13 22.68 44 45.8 1.026 1.461 93 15.2 2:56 (221, -9)
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It brightened up to 8.1 mag in autumn (Oct. 10, Juan Jose Gonzalez). Fading rapidly. It will be fainter than 18 mag in February. It will never be observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 18 25.87 -28 3.5 2.130 1.193 13 15.1 20:56 ( 49, -6)
Dec. 23 18 50.85 -27 34.0 2.245 1.298 11 15.8 21:01 ( 48, -8)
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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 15.7 mag (Dec. 6, A. Diepvens). It stays 15 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. 16 16 48.27 16 6.8 6.860 6.148 40 15.2 2:53 (276,-37)
Dec. 23 16 54.15 16 23.3 6.867 6.186 43 15.2 2:56 (272,-33)
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Now it is 15.6 mag (Dec. 4, Hiroshi Abe). Fading slowly. It will be unobservable in January 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. 16 22 32.91 3 11.5 3.837 3.756 77 15.2 20:56 (111, 22)
Dec. 23 22 31.21 3 23.8 4.000 3.789 70 15.3 21:01 (105, 15)
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Now it is 15.2 mag (Dec. 3, Ken-ichi Kadota). Fading gradually. 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. 16 0 39.14 -20 0.1 1.369 1.777 96 15.3 20:56 (114, 60)
Dec. 23 0 42.72 -15 10.7 1.427 1.774 92 15.3 21:01 (113, 52)
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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 17.5 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). Brightening gradually. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 0 2.76 -12 18.0 0.601 1.173 92 15.6 20:56 (114, 49)
Dec. 23 0 11.78 -13 7.6 0.581 1.115 86 15.3 21:01 (108, 45)
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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 in January. 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. 16 21 59.88 1 20.6 1.468 1.456 69 15.7 20:56 (104, 17)
Dec. 23 22 27.61 2 29.1 1.567 1.530 69 16.2 21:01 (104, 15)
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David Rankin detected its cometary activity in June. Now it is 16.3 mag (Dec. 11, Catalina Sky Survey). 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 unobservable in March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 23 11.22 0 23.8 1.960 2.124 85 15.8 20:56 (116, 31)
Dec. 23 23 22.93 1 25.3 2.032 2.124 81 15.9 21:01 (113, 26)
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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). Fading rapidly. It will be fainter than 18 mag in February. In the Northern Hemisphere, it will be unobservable in January. 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. 16 12 34.15 -47 43.5 2.239 1.989 62 15.8 2:53 (306, 44)
Dec. 23 12 24.40 -50 1.6 2.245 2.101 68 16.2 2:56 (308, 50)
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The ATLAS search program detected its cometary activity in April. It continues to be brightening even after the perihelion passage. Now it is 16.3 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). It will fade out rapidly after this. It will be fainter than 18 mag in February. It will be getting lower gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 23 48.75 -16 18.6 3.430 3.526 87 15.8 20:56 (106, 48)
Dec. 23 23 53.79 -15 6.1 3.568 3.569 82 16.1 21:01 (102, 42)
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Very large comet. It is expected to brighten up to 13 mag in 2031. Now it is 15.9 mag (Nov. 22, 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)
Dec. 16 2 59.77 -65 51.5 16.940 16.906 86 16.0 21:20 ( 0, 59)
Dec. 23 2 57.46 -65 41.9 16.952 16.881 84 16.0 21:01 ( 2, 59)
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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. 16 20 58.07 1 59.7 0.386 0.834 56 16.0 20:56 ( 96, 4)
Dec. 23 21 55.37 14 1.0 0.343 0.913 68 16.0 21:01 (110, 2)
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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 gradually. 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. 16 22 38.57 -13 34.7 4.111 3.933 72 16.0 20:56 ( 97, 33)
Dec. 23 22 41.59 -13 55.8 4.291 3.997 66 16.2 21:01 ( 92, 27)
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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 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)
Dec. 16 20 47.03 -15 1.0 2.540 1.998 46 16.0 20:56 ( 80, 11)
Dec. 23 21 2.76 -13 35.6 2.599 2.006 43 16.1 21:01 ( 78, 7)
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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 16.8 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). It will brighten rapidly after this. It stays observable in good condition. 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. 16 3 19.17 -18 46.9 2.186 2.887 127 16.3 21:40 (180, 74)
Dec. 23 3 11.54 -17 24.9 2.171 2.814 121 16.1 21:05 (180, 72)
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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. 16 1 57.18 -28 35.3 3.104 3.518 106 16.1 20:56 (126, 80)
Dec. 23 1 51.48 -29 16.9 3.169 3.476 99 16.1 21:01 (104, 73)
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Now it is 17.3 mag (Dec. 12, Jean-Claude Merlin). It stays 16 mag for a while. In the Northern Hemisphere, it will never be observable after this. In the Southern Hemisphere, it stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 9 12.77 -63 51.1 3.762 3.768 82 16.1 2:53 (350, 60)
Dec. 23 8 57.37 -66 22.2 3.748 3.780 84 16.1 2:54 ( 0, 59)
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Now it is 14.3 mag (July 7, Thomas Lehmann). 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. 16 15 29.92 -48 37.2 4.077 3.318 34 16.2 2:53 (318, 17)
Dec. 23 15 40.54 -48 31.9 4.103 3.376 37 16.2 2:56 (316, 19)
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Now it is 17.9 mag (Dec. 7, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. It will be fainter than 18 mag in April. In the Northern Hemisphere, it will be getting lower gradually. In the Southern Hemisphere, it stays observable in good condition. It is fainter than this ephemeris recently.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 11 42.05 -8 24.3 1.985 2.126 84 16.3 2:53 (251, 39)
Dec. 23 11 34.04 -11 58.8 1.881 2.147 91 16.2 2:56 (246, 48)
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It brightened up to 13.6 mag in summer (July 16, Mitsunori Tsumura). Now it is 15.7 mag (Nov. 21, Ken-ichi Kadota). 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. 16 23 23.32 65 19.7 1.892 2.415 110 16.3 20:56 (161,-17)
Dec. 23 23 31.90 64 38.5 1.976 2.463 107 16.6 21:01 (159,-18)
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Now it is 14.6 mag (Dec. 5, Chris Wyatt). Fading slowly. It will be unobservable in January. But it will be observable again in February. It is brighter than this ephemeris recently.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 21 49.03 -38 56.5 1.194 1.042 56 16.6 20:56 ( 63, 34)
Dec. 23 21 30.50 -38 36.6 1.340 0.972 46 16.5 21:01 ( 59, 25)
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Now it is 15.8 mag (Dec. 7, Toshihiko Ikemura, Hirohisa Sato). 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. 16 4 40.08 -12 26.9 6.322 7.125 142 16.5 23:01 (180, 67)
Dec. 23 4 37.52 -12 9.9 6.324 7.094 138 16.5 22:31 (180, 67)
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It is expected to brighten up to 12.5 mag in 2024 summer. Now it is 17.3 mag (July 28, ATLAS South Africa). 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. 16 13 48.46 -56 11.5 4.776 4.241 51 16.7 2:53 (319, 34)
Dec. 23 14 0.20 -57 25.7 4.677 4.186 54 16.6 2:56 (320, 37)
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It is expected to brighten up to 11.5 mag in 2025 autumn, and it will be observable in good condition. Now it is 17.0 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). Brightening slowly. It will be unobservable in January. But it will be observable again in March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 20 55.36 -17 31.2 6.878 6.261 47 16.6 20:56 ( 78, 14)
Dec. 23 20 59.83 -17 9.9 6.915 6.218 41 16.6 21:01 ( 75, 8)
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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. It stays extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 4 42.70 41 44.2 5.763 6.690 158 16.6 23:04 (180, 13)
Dec. 23 4 39.84 41 38.5 5.786 6.690 154 16.6 22:33 (180, 13)
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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. 4, ATLAS South Africa). 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. 16 4 5.04 -62 36.8 4.330 4.481 92 16.7 22:24 ( 0, 62)
Dec. 23 3 49.79 -62 2.1 4.434 4.550 90 16.8 21:41 ( 0, 63)
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Now it is 17.0 mag (Dec. 12, Toshihiko Ikemura, Hirohisa Sato). 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. 16 4 46.98 35 30.6 4.181 5.136 164 16.8 23:08 (180, 20)
Dec. 23 4 43.51 34 48.9 4.186 5.118 159 16.7 22:37 (180, 20)
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Very far object. Now it is 16.9 mag (Dec. 4, ATLAS South Africa). 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. 16 3 0.63 -76 15.3 10.477 10.314 77 16.8 21:19 ( 0, 49)
Dec. 23 2 48.63 -75 39.4 10.501 10.315 76 16.8 21:01 ( 2, 49)
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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. 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. 16 12 54.05 2 50.6 3.983 3.800 72 16.9 2:53 (254, 18)
Dec. 23 12 59.31 2 26.8 3.866 3.785 77 16.9 2:56 (250, 23)
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Now it is 16.5 mag (Dec. 13, Toshihiko Ikemura, Hirohisa Sato). 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 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. 16 0 7.87 -6 16.3 3.624 3.850 95 16.9 20:56 (122, 46)
Dec. 23 0 10.70 -5 39.0 3.745 3.866 89 17.0 21:01 (116, 40)
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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 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)
Dec. 16 14 7.27 6 34.5 4.841 4.400 58 16.9 2:53 (262, 1)
Dec. 23 14 13.44 6 26.5 4.794 4.440 63 16.9 2:56 (258, 6)
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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 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. 16 1 24.16 -0 24.7 5.344 5.836 115 17.0 20:56 (151, 51)
Dec. 23 1 21.25 0 3.7 5.504 5.884 108 17.1 21:01 (139, 47)
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Fading slowly. It will be fainter than 18 mag in January. 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. 16 21 44.39 8 51.4 1.206 1.264 69 17.0 20:56 (108, 9)
Dec. 23 22 10.58 10 6.4 1.344 1.356 69 17.3 21:01 (108, 7)
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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. 16 13 6.25 -23 32.0 3.877 3.495 60 17.1 2:53 (279, 30)
Dec. 23 13 14.90 -24 20.8 3.786 3.484 64 17.0 2:56 (278, 34)
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Now it is 17.1 mag (Dec. 11, Jean-Claude Merlin). It stays 17 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. 16 4 58.32 -40 57.9 7.272 7.744 115 17.1 23:18 ( 0, 84)
Dec. 23 4 55.60 -40 44.2 7.268 7.720 113 17.1 22:48 ( 0, 84)
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It brightened up to 11.8 mag in summer (June 17, Osamu Miyazaki). Now it is 17.0 mag (Nov. 23, Catalina Sky Survey). Fading gradually. It will be fainter than 18 mag in January. 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. 16 21 35.91 -1 14.9 2.858 2.568 63 17.1 20:56 ( 98, 13)
Dec. 23 21 47.20 -0 39.1 2.964 2.598 59 17.4 21:01 ( 95, 9)
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Now it is 17.9 mag (Dec. 10, N. Paul, E. Cortes). 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)
Dec. 16 7 43.91 34 45.6 0.894 1.811 149 17.3 2:09 (180, 20)
Dec. 23 7 44.11 35 49.9 0.843 1.783 154 17.1 1:41 (180, 19)
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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 16.4 mag (Dec. 1, Hidetaka Sato). It will brighten rapidly after this. In the Southern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 23 7.03 -13 26.2 1.565 1.687 79 17.2 20:56 (102, 38)
Dec. 23 23 8.98 -9 7.2 1.607 1.640 74 17.2 21:01 (101, 30)
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It brightens up to 16 mag from January to February. Now it is 17.4 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). 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. 16 9 9.97 4 30.6 1.205 1.936 124 17.5 2:53 (196, 49)
Dec. 23 9 12.45 2 3.5 1.128 1.910 129 17.3 2:56 (185, 53)
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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. 16 22 39.33 44 15.2 4.048 4.286 97 17.4 20:56 (142, -6)
Dec. 23 22 36.20 42 46.8 4.138 4.275 91 17.4 21:01 (136, -9)
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It is expected to brighten up to 13 mag in early summer in 2024. Now it is 17.3 mag (Dec. 9, 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. 16 2 33.82 -42 40.9 2.264 2.656 102 17.5 20:56 ( 3, 83)
Dec. 23 2 23.54 -40 7.6 2.238 2.576 98 17.4 21:01 ( 58, 80)
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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 January. It stays observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 3 21.38 4 15.8 2.355 3.199 143 17.4 21:42 (180, 51)
Dec. 23 3 19.01 4 31.3 2.430 3.214 136 17.5 21:12 (180, 50)
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It brightened up to 8.4 mag in late July (July 22, Thomas Lehmann). Now it is 18.4 mag (Nov. 15, Toshihiko Ikemura, Hirohisa Sato). Fading rapidly. It will be fainter than 18 mag soon. It locates somewhat low in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually. Thomas Lehmann reported it was bright as 14.9 mag on Nov. 18.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 23 40.54 -22 42.1 2.550 2.622 83 17.4 20:56 ( 96, 50)
Dec. 23 23 48.75 -21 56.2 2.718 2.700 78 17.8 21:01 ( 93, 45)
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Now it is 17.3 mag (Dec. 8, 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 be getting higher gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 12 33.20 13 30.9 9.406 9.313 81 17.6 2:53 (242, 15)
Dec. 23 12 32.56 13 50.7 9.296 9.326 88 17.6 2:56 (236, 20)
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Now it is 18.3 mag (Nov. 21, Ken-ichi Kadota). 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. 16 7 8.64 9 19.4 6.872 7.761 152 17.7 1:33 (180, 46)
Dec. 23 7 2.70 9 14.7 6.831 7.761 159 17.7 1:00 (180, 46)
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Now it is 17.2 mag (Dec. 8, Toshihiko Ikemura, Hirohisa Sato). Fading slowly. It will be fainter than 18 mag soon. It locates somewhat low in the Northern Hemisphere. It stays extremely low in the Southern Hemisphere. It was very faint as 21.5 mag in 2021. It seems to be bright temporarily in outburst.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 21 35.33 -9 54.6 5.142 4.720 59 17.7 20:56 ( 91, 18)
Dec. 23 21 40.68 -9 27.9 5.248 4.734 53 17.9 21:01 ( 87, 12)
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Now it is 18.4 mag (Dec. 7, Toshihiko Ikemura, Hirohisa Sato). 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. 16 4 41.27 23 25.3 3.165 4.135 168 17.8 23:02 (180, 32)
Dec. 23 4 37.06 23 5.0 3.195 4.135 160 17.9 22:30 (180, 32)
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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. 16 16 9.39 31 60.0 5.641 5.197 58 17.8 2:53 (254,-37)
Dec. 23 16 13.38 32 50.0 5.636 5.246 61 17.9 2:56 (250,-32)
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Now it is 17.1 mag (Dec. 13, 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 lower gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 1 21.46 -2 10.2 2.181 2.735 114 17.9 20:56 (149, 53)
Dec. 23 1 22.06 -1 39.1 2.234 2.698 107 17.8 21:01 (138, 49)
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Now it is 18.0 mag (Dec. 6, A. Diepvens). Fading slowly. It will be fainter than 18 mag in January. 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. 16 21 21.25 75 45.6 1.510 2.007 105 17.9 20:56 (164,-31)
Dec. 23 21 58.68 76 18.1 1.498 2.006 105 17.9 21:01 (165,-31)
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Now it is 19.3 mag (Sept. 29, F. Kugel, J. Nicolas). 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. 16 11 37.18 9 13.9 1.854 2.134 92 18.2 2:53 (234, 27)
Dec. 23 11 46.08 8 7.0 1.775 2.130 96 18.0 2:56 (231, 32)
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Now it is 19.8 mag (Dec. 12, Hidetaka Sato). Fading slowly. It locates somewhat low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 16 22 15.12 -18 22.4 1.908 1.753 65 18.4 20:56 ( 89, 31)
Dec. 23 22 31.29 -16 21.7 1.961 1.751 63 18.3 21:01 ( 88, 26)
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