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Now it is very bright as 8.9 mag (Mar. 15, Chris Wyatt). It is observable at 8 mag for a long time from 2022 to 2023. In the Southern Hemisphere, it stays observable for a long time. In the Northern Hemisphere, it is not observable until summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 3 58.95 -35 37.1 2.608 2.261 58 8.7 19:09 ( 70, 39)
Apr. 15 4 12.83 -32 12.0 2.704 2.313 56 8.9 19:00 ( 74, 37)
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Now it is 10.7 mag (Mar. 28, Osamu Miyazaki). It stays bright as 10 mag for a long time until autumn. In the Northern Hemisphere, it becomes unobservable temporarily in early April. But it becomes observable again in summer. In the Southern Hemipshere, it stays unobservable until summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 2 16.06 30 39.1 3.078 2.256 29 10.0 19:09 (116,-17)
Apr. 15 2 21.62 29 12.6 3.133 2.244 23 10.0 19:00 (113,-18)
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Now it is 13.1 mag (Mar. 30, Chris Wyatt). It was expected to brighten up to 10 mag from spring to summer. However, it is fainter than expected recently. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2024 autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 20 16.90 -46 48.5 3.047 3.088 82 10.8 4:53 (305, 61)
Apr. 15 20 24.75 -49 26.9 2.940 3.082 88 10.7 4:59 (313, 64)
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It brightened very rapidly. Now it is very bright as 11.0 mag (Mar. 31, Osamu Miyazaki). It will be fading gradually after this. In the Northern Hemisphere, it stays observable for a long time. But it locates low until spring. In the Southern Hemisphere, it is not observable until June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 0 1.03 42 41.0 2.523 1.847 38 10.8 4:53 (233,-24)
Apr. 15 0 11.65 41 37.5 2.588 1.880 36 11.0 4:59 (232,-20)
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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 fading. It has already faded down to 10.9 mag (Mar. 28, Osamu Miyazaki). In the Southern Hemisphere, it stays observable in good condition after this. In the Northern Hemisphere, it is observable only until mid April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 4 57.10 -8 40.6 2.000 1.730 59 10.9 19:09 (108, 38)
Apr. 15 5 2.13 -9 35.4 2.167 1.809 55 11.3 19:00 (105, 36)
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Now it is 12.7 mag (Apr. 3, Ken-ichi Kadota). It brightens very rapidly up to 11.5 mag in April. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable from mid April to mid June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 19 41.92 24 10.0 0.121 0.985 78 11.7 4:53 (206, 26)
Apr. 15 21 48.41 8 39.8 0.146 0.926 54 11.5 4:59 (236, 26)
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Now it is 13.3 mag (Mar. 28, Ken-ichi Kadota). It will brighten very rapidly. It is expected to be observable at 11 mag in excellent condition from spring to summer. It is fainter than this ephemeris recently.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 19 3.20 -19 47.8 1.695 2.009 92 11.9 4:53 (229, 69)
Apr. 15 19 14.60 -18 29.6 1.618 2.001 96 11.6 4:59 (214, 71)
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Now it is 11.4 mag (Mar. 31, Osamu Miyazaki). It stays 12 mag until summer. It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 11 36.08 -1 55.8 2.681 3.625 157 11.8 22:29 (180, 57)
Apr. 15 11 22.35 -2 13.3 2.742 3.627 147 11.8 21:48 (180, 57)
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It brightened up to 8.3 mag in last winter (Jan. 6, 2022, Toshiyuki Takahashi). Now it is fading. But it is bright as 12.2 mag still now (Mar. 30, Chris Wyatt). It is observable in excellent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 2.23 -33 12.6 4.781 5.328 118 12.4 19:57 (180, 88)
Apr. 15 9 1.78 -32 42.7 4.880 5.370 114 12.5 19:29 (180, 88)
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Now it is 12.6 mag (Mar. 21, Osamu Miyazaki). It stays 12 mag until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 17 45.63 -18 48.4 1.338 1.936 110 12.4 4:43 (180, 74)
Apr. 15 17 49.57 -18 40.6 1.305 1.972 116 12.5 4:20 (180, 74)
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Now it is bright as 13.2 mag (Mar. 31, Osamu Miyazaki). It stays 13 mag until spring. It stays observable in good condition for a while after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 15 42.33 14 15.8 4.154 4.919 135 13.0 2:40 (180, 41)
Apr. 15 15 40.35 15 31.6 4.144 4.948 139 13.1 2:11 (180, 40)
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It brightened up to 14.5 mag in February (Feb. 16, Ken-ichi Kadota). It is expected to brighten up to 8 mag in July. Now it is not observable. In the Southern Hemisphere, it will appear in the morning sky at 13 mag in mid April, and it will be observable in excellent condition at the high light. In the Northern Hemisphere, it is not observable until June, and it becomes very low at the high lihght.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 0 33.09 -10 49.6 3.069 2.150 19 13.3 4:53 (284, -1)
Apr. 15 0 35.32 -10 45.7 2.958 2.086 24 13.0 4:59 (280, 5)
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Now it is 13.2 mag (Mar. 30, Chris Wyatt). The condition is bad in this apparition. Appearing in the morning sky in the Southern Hemisphere. It is not observable until May in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 22 34.75 -16 10.4 2.320 1.740 43 13.4 4:53 (272, 26)
Apr. 15 22 51.66 -14 48.3 2.305 1.767 46 13.4 4:59 (269, 28)
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Now it is 14.6 mag (Mar. 18, Chris Wyatt). The brightness evolution is slower than originally predicted. It stays 14 mag until summer. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2024 spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 4 5.52 -20 56.9 2.503 2.051 52 13.7 19:09 ( 87, 34)
Apr. 15 4 15.99 -21 53.0 2.513 2.041 51 13.7 19:00 ( 85, 33)
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Now it is 13.0 mag (Mar. 25, iTelescope Observatory, Beryl Junction).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 6 24.58 27 36.5 6.218 6.088 77 13.9 19:09 (154, 22)
Apr. 15 6 27.74 27 26.3 6.329 6.090 71 13.9 19:00 (151, 21)
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Now it is 14.4 mag (Mar. 30, Chris Wyatt). It will brighten rapidly up to 14 mag and will be observable in excellent condition in spring. In the Northern Hemisphere, it was observable in good condition in winter, but it becomes somewhat low in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 14 19.55 -27 4.2 1.412 2.349 153 14.0 1:18 (180, 82)
Apr. 15 14 11.92 -28 18.8 1.387 2.350 158 14.0 0:43 (180, 83)
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It brightened up to 11 mag in SWAN images in January (Jan. 23, Vladimir Bezugly). Now it is fading. It has already faded down to 15.6 mag (Mar. 25, M. Masek). In the Southern Hemisphere, it stays observable in good condition after this. In the Northern Hemisphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 22 31.09 -52 13.8 1.699 1.610 67 14.2 4:53 (312, 39)
Apr. 15 23 3.01 -56 27.8 1.701 1.697 72 14.5 4:59 (317, 40)
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Now it is 14.4 mag (Apr. 2, ATLAS Chile). It is expected to brighten up to 7 mag in early 2024. In the Southern Hemisphere, it stays observable in good condition for a long time. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 5 25.26 -28 59.2 4.344 4.148 72 14.4 19:09 ( 88, 54)
Apr. 15 5 30.00 -28 7.4 4.330 4.078 68 14.3 19:00 ( 87, 51)
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Now it is 14.9 mag (Mar. 19, Masayoshi Yoshimi). It stays 14 mag in 2023. It is not observable now. Then it is not observable until May in the Southern Hemisphere, or until June in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 2 34.50 -3 34.0 4.151 3.268 24 14.7 19:09 ( 90, 6)
Apr. 15 2 35.39 -2 33.3 4.183 3.259 20 14.7 19:00 ( 88, 2)
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Now it is 14.7 mag (Mar. 27, W. Pei). It stays 14.5 mag and observable in good condition until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 25.44 29 25.5 2.853 3.413 116 14.8 20:21 (180, 26)
Apr. 15 9 28.66 29 19.3 2.948 3.424 110 14.9 19:56 (180, 26)
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It brightened up to 9.7 mag in autumn (Oct. 23, Marco Goiato). Now it is fading. It has already faded down to 12.9 mag (Mar. 14, Thomas Lehmann). In the Southern Hemisphere, it stays observable in good condition for a long time. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 17 59.02 -44 50.6 1.786 2.282 106 15.0 4:53 (356, 80)
Apr. 15 17 30.66 -45 21.2 1.701 2.341 117 15.2 4:02 ( 0, 80)
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Now it is 13.9 mag (Mar. 27, W. Pei). It will be fading after this. It stays observable in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 8 48.45 20 58.6 1.566 2.142 111 15.1 19:44 (180, 34)
Apr. 15 8 56.57 20 51.0 1.666 2.171 106 15.4 19:25 (180, 34)
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Now it is 15.4 mag (Apr. 2, E. Cortes, B. Lutkenhoner). It will be fading after this, and it will be fainter than 18 mag in May. In the Southern Hemisphere, it stays observable in the extremely low sky. In the Northern Hemisphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 23 21.39 -6 10.7 1.554 0.834 28 15.1 4:53 (270, 11)
Apr. 15 23 55.38 -2 57.3 1.597 0.834 26 15.2 4:59 (267, 9)
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Now it is 15.6 mag (Mar. 29, Thomas Lehmann). It will brighten up to 13 mag from 2024 to 2025. It is observable in excllent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 8 43.93 -34 41.7 5.862 6.339 114 15.2 19:39 (180, 90)
Apr. 15 8 44.72 -33 52.9 5.884 6.308 110 15.1 19:12 (180, 89)
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Now it is 16.1 mag (Mar. 26, D. Buczynski). It is expected to brighten up to 11.5 mag in 2024 spring. It stays observable in good condition for a long time. 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)
Apr. 8 18 29.98 19 11.4 4.103 4.322 95 15.4 4:53 (190, 35)
Apr. 15 18 25.55 19 55.3 3.953 4.272 101 15.3 4:55 (180, 35)
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Now it is 15.1 mag (Mar. 31, Masayoshi Yoshimi). It is expected to brighten up to 12 mag from 2024 to 2025.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 6.33 -8 49.0 5.219 5.798 120 15.3 20:01 (180, 64)
Apr. 15 9 2.77 -7 38.1 5.275 5.755 113 15.3 19:30 (180, 63)
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It brightened up to 13.4 mag in last summer (July 7, Giuseppe Pappa). Now it is fading. It has already faded down to 15.9 mag (Mar. 28, P.-J. Dekelver). It stays 15-16 mag until summer. It stays observable in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 17 57.57 14 8.0 3.187 3.571 104 15.4 4:53 (181, 41)
Apr. 15 17 51.58 16 46.0 3.135 3.609 110 15.4 4:21 (180, 38)
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Now it is 14.8 mag (Dec. 8, ATLAS Chile). In the Southern Hemisphere, apperaing in the morning sky. In the Northern Hemisphere, it will become observable in late May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 23 16.15 -12 17.0 4.109 3.316 33 15.4 4:53 (274, 15)
Apr. 15 23 25.09 -11 25.8 4.067 3.329 37 15.4 4:59 (270, 19)
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Now it is 16.8 mag (Mar. 28, E. Cortes, B. Lutkenhoner). It will brighten rapidly up to 13.5 mag in summer. In the Southern Hemisphere, it stays observable until August. In the Northern Hemisphere, it is not observable until June. But it stays observable in good condition after that.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 23 29.58 -30 24.1 2.555 1.958 43 15.6 4:53 (293, 22)
Apr. 15 23 43.78 -27 42.3 2.492 1.923 45 15.4 4:59 (288, 24)
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Now it is 16.5 mag (Mar. 18, J.-C. Merlin). It stays observable at 14-15 mag from spring to autumn. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 18 23.93 -15 15.7 2.672 3.036 101 15.7 4:53 (199, 69)
Apr. 15 18 28.24 -15 40.7 2.566 3.023 107 15.6 4:58 (180, 71)
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It brightened very rapidly up to 9.6 mag in late January (Jan. 25, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 14.1 mag (Mar. 19, Ken-ichi Kadota). It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 7 5.05 -3 56.0 1.479 1.793 90 15.7 19:09 (149, 55)
Apr. 15 7 16.30 -5 44.4 1.610 1.858 87 16.3 19:00 (145, 56)
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Now it is 16.8 mag (Mar. 28, Thomas Lehmann). It will brighten up to 13 mag in summer. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 2 16.87 66 17.4 2.023 1.764 60 16.0 19:09 (152,-31)
Apr. 15 2 13.58 65 9.8 2.048 1.707 56 15.9 19:00 (150,-33)
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Now it is 16.9 mag (Mar. 31, Ken-ichi Kadota). It will brighten up to 13 mag from June to August. In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it becomes unobservable from late April to early August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 12 36.27 37 23.8 0.800 1.667 135 16.2 23:30 (180, 17)
Apr. 15 12 30.15 43 4.5 0.779 1.589 125 16.0 22:56 (180, 12)
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It continued brightening even after the perihelion passage. Now it is 16.1 mag (Mar. 19, Ken-ichi Kadota). It will be fading after this, and it will be fainter than 18 mag in July. It is observable in good condition in the Northern Hemisphere. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 7 46.28 25 24.1 2.532 2.823 96 16.0 19:09 (173, 29)
Apr. 15 7 53.01 25 9.3 2.648 2.847 90 16.1 19:00 (170, 29)
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It approached to Sun down to 0.1 a.u. on Jan. 31. It was bright as 7.0-7.5 mag in early February (Feb. 5, Michael Jager). Now it is fading rapidly. It has already faded down to 13.2 mag (Mar. 24, Thomas Lehmann). It stays observable after this while the comet will be fading.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 20 18.82 -8 48.6 1.564 1.591 72 16.1 4:53 (240, 48)
Apr. 15 20 15.95 -9 15.6 1.547 1.699 80 16.4 4:59 (230, 54)
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Now it is 16.0 mag (Mar. 31, Ken-ichi Kadota). It stays observable at 16 mag for a long time from early 2023 to early 2024. In the Northern Hemisphere, it is observable only until 2023 spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 8 29.25 -7 46.3 3.531 4.011 111 16.3 19:24 (180, 63)
Apr. 15 8 25.25 -8 2.9 3.613 3.988 104 16.3 19:00 (176, 63)
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It was observed at 15 mag from 2021 to 2022. Now it is fading. Now it is 17.4 mag (Apr. 3, ATLAS South Africa). In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemiphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 13 20.34 -73 51.2 5.890 6.349 113 16.4 0:20 ( 0, 51)
Apr. 15 12 57.03 -73 48.8 5.884 6.380 115 16.4 23:22 ( 0, 51)
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It brightened up to 9.3 mag in early summer in 2022 (June 5, Chris Wyatt). Now it is fading. It has already faded down to 16.6 mag (Mar. 31, ATLAS South Africa). In the Southen Hemisphere, it stays observable in good condition for a long time. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 6 41.93 -10 11.7 3.871 3.924 85 16.5 19:09 (134, 57)
Apr. 15 6 43.40 -8 31.5 4.039 3.987 79 16.6 19:00 (130, 53)
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Now it is 16.9 mag (Mar. 19, Toshihiko Ikemura, Hirohisa Sato). It is observable at 16.5 mag in good condition in spring. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 8 27.95 27 0.9 1.769 2.247 105 16.5 19:24 (180, 28)
Apr. 15 8 35.02 26 21.3 1.839 2.241 99 16.6 19:03 (180, 29)
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Now it is 17.1 mag (Mar. 29, Masayoshi Yoshimi). It moves along an almost circular orbit. It seems to be bright temporarily in outburst.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 10 38.36 26 10.9 5.433 6.141 131 16.6 21:33 (180, 29)
Apr. 15 10 36.79 26 5.5 5.513 6.141 124 16.6 21:04 (180, 29)
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Now it is 15.6 mag (Apr. 2, ATLAS South Africa). It brightens up to 16 mag from March to April. In the Southern Hemisphere, it stays observable in excellent condition. In the Northern Hemisphere, it will be getting higher gradually after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 12 3.98 -39 32.5 0.869 1.782 144 16.7 22:59 ( 0, 86)
Apr. 15 12 10.65 -34 11.0 0.866 1.803 149 16.7 22:38 (180, 89)
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Now it is 16.7 mag (Mar. 29, ATLAS Chile). Very far object. It stays 16-17 mag for a long time from 2021 to 2026. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable at all.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 4 55.95 -70 3.3 10.400 10.381 86 16.8 19:09 ( 22, 46)
Apr. 15 4 56.91 -69 30.0 10.389 10.377 86 16.8 19:00 ( 24, 45)
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It brightened up to 12.7 mag in last year (Feb. 27, 2022, Jose Guilherme de S. Aguiar). Now it is fading. It has already faded down to 17.1 mag (Mar. 17, J.-C. Merlin). In the Southern Hemisphere, it stays observable until summer when it becomes fainter than 18 mag. It locates low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 19 44.96 -24 49.6 2.731 2.807 83 16.9 4:53 (254, 64)
Apr. 15 19 51.48 -24 42.7 2.661 2.832 89 16.9 4:59 (246, 69)
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Now it is 17.1 mag (Mar. 31, Ken-ichi Kadota). In the Northern Hemisphere, it stays observable at 17 mag in good condition from spring to summer. In the Southern Hemisphere, it locates extremely low only in summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 13 9.61 55 9.8 2.533 3.130 117 17.0 0:08 (180, 0)
Apr. 15 13 6.65 55 52.7 2.552 3.104 114 16.9 23:33 (180, -1)
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Now it is 16.5 mag (Mar. 31, ATLAS South Africa). It stays 17 mag and observable in good condition until summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 12 54.33 11 52.7 7.999 8.952 161 17.1 23:48 (180, 43)
Apr. 15 12 49.70 12 22.3 8.034 8.959 155 17.1 23:16 (180, 43)
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Now it is 16.7 mag (Mar. 29, Masayoshi Yoshimi). It will be fading after this, and it will be fainter than 18 mag in early May. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 13 28.29 27 30.6 0.525 1.463 145 17.1 0:26 (180, 28)
Apr. 15 13 24.74 25 37.2 0.570 1.505 144 17.3 23:51 (180, 30)
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Now it is 15.8 mag (Mar. 19, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and it will be fainter than 18 mag in early May. It is observable in excellent condition in the Northern Hemisphere. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 7 15.19 33 26.8 1.588 1.853 88 17.2 19:09 (167, 21)
Apr. 15 7 14.77 28 30.5 1.719 1.867 82 17.4 19:00 (161, 24)
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Now it is 16.8 mag (Mar. 19, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17 mag from spring to early summer. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 12.21 36 48.5 2.050 2.574 110 17.2 20:08 (180, 18)
Apr. 15 9 15.89 36 4.3 2.117 2.564 104 17.2 19:44 (180, 19)
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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 17.3 mag (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a while. 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)
Apr. 8 15 6.83 0 55.8 6.043 6.917 148 17.3 2:05 (180, 54)
Apr. 15 15 2.56 1 19.8 5.934 6.854 154 17.2 1:33 (180, 54)
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Now it is 17.1 mag (Mar. 13, ATLAS Chile). Very large comet. It is expected to brighten up to 14 mag in 2031. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2030.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 2 44.81 -57 26.9 18.160 17.801 67 17.3 19:09 ( 39, 33)
Apr. 15 2 47.68 -57 20.9 18.116 17.776 68 17.3 19:00 ( 39, 31)
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It has not been observed yet in this apparition. It will brighten rapidly up to 11 mag in July. It stays extremely low in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 22 1.95 -0 49.1 2.121 1.602 46 17.9 4:53 (253, 24)
Apr. 15 22 22.63 1 12.0 2.023 1.535 47 17.4 4:59 (249, 25)
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Now it is 17.1 mag (Apr. 3, Ken-ichi Kadota). It was regarded as an asteroid, but its cometary activity was detected. It will be fading after this, and it will be fainter than 18 mag in late April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 6 15.29 16 37.9 1.326 1.458 76 17.5 19:09 (147, 31)
Apr. 15 6 39.16 16 13.0 1.384 1.486 75 17.6 19:00 (148, 32)
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It brightened up to 14.1 mag in autumn (Nov. 14, Thomas Lehmann). Now it is fading. It has already faded down to 17.6 mag (Mar. 30, Catalina Sky Survey). In the Northern Hemisphere, it stays observable in excellent condition for a while. In the Southern Hemisphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 4 19.57 37 14.2 3.259 2.783 53 17.5 19:09 (137, 0)
Apr. 15 4 33.57 37 41.7 3.353 2.812 49 17.6 19:00 (137, -1)
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It brightened very rapidly up to 15.5 mag from last autumn to last winter (Nov. 2, 2021, Toshihiko Ikemura, Hirohisa Sato). Now it is fading slowly. It has already faded down to 17.0 mag (Mar. 25, ATLAS-HKO, Haleakala).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 6 24.49 11 31.6 4.859 4.766 78 17.5 19:09 (146, 37)
Apr. 15 6 28.78 11 39.6 4.982 4.788 73 17.6 19:00 (142, 35)
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Now it is 17.1 mag (Mar. 28, ATLAS-HKO, Haleakala). Fading slowly. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 18 28.49 74 53.8 9.867 9.843 85 17.5 4:53 (182,-20)
Apr. 15 18 23.76 75 50.1 9.900 9.860 84 17.6 4:52 (180,-21)
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Now it is 17.3 mag (Mar. 10, Catalina Sky Survey). Fading slowly. In the Southern Hemisphere, it is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 18 50.80 55 35.8 6.336 6.350 86 17.5 4:53 (188, -1)
Apr. 15 18 52.79 56 50.4 6.355 6.384 87 17.6 4:59 (183, -2)
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It brightened up to 15.3 mag in last winter (Jan. 12, 2022, H. Nohara). Now it is fading. It has already faded down to 17.2 mag (Mar. 15, ATLAS-HKO, Haleakala). It will be fainter than 18 mag in May. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 50.62 31 19.9 4.163 4.742 119 17.5 20:46 (180, 24)
Apr. 15 9 50.41 31 20.0 4.274 4.762 113 17.6 20:18 (180, 24)
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It brightened up to 15.9 mag in 2022 spring (May 5, Toshiyuki Takahashi). Now it is 17.4 mag (Mar. 18, J.-C. Merlin). In 2023, it is observable at 17.5 mag in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 16 30.93 -24 35.8 4.218 4.895 127 17.6 3:29 (180, 80)
Apr. 15 16 29.64 -24 39.5 4.143 4.902 134 17.6 3:00 (180, 80)
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Now it is 17.9 mag (Apr. 3, Ken-ichi Kadota). It returns for the first time in 70 years. It will brighten up to 4.5 mag in 2024 spring. In the Northern Hemisphere, it stays observable in good condition until 2024 spring while the comet will be brightening gradually. In the Southern Hemisphere, it is observable only in 2023 spring in the extremely low sky before the perihelion passage.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 19 32.83 37 3.1 4.958 4.890 80 17.8 4:53 (200, 15)
Apr. 15 19 34.80 38 34.3 4.838 4.825 83 17.7 4:59 (193, 15)
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It will brighten up to 16.5 mag in summer. It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 21 46.59 -11 2.5 3.573 3.068 52 17.9 4:53 (260, 33)
Apr. 15 21 55.94 -10 32.5 3.491 3.063 57 17.8 4:59 (255, 37)
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It brightened rapidly. Now it is 16.9 mag (Mar. 19, Ken-ichi Kadota). It will be fading after this. It will be fainter than 18 mag in April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 56.72 21 26.0 1.459 2.201 125 17.9 20:52 (180, 34)
Apr. 15 10 0.53 20 54.0 1.553 2.232 120 18.1 20:28 (180, 34)
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Now it is 19.3 mag (Mar. 27, A. Diepvens). Fading rapidly. It looks elongated.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 10 5.23 16 26.8 3.467 4.179 129 17.9 21:00 (180, 39)
Apr. 15 10 4.94 16 28.5 3.548 4.179 122 18.0 20:32 (180, 39)
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Now it is 17.6 mag (Mar. 18, D. Buczynski). It will be fading after this, and it will be fainter than 18 mag in April. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 6 11.29 25 25.6 4.098 3.958 74 17.9 19:09 (150, 23)
Apr. 15 6 17.37 25 19.9 4.201 3.962 69 18.0 19:00 (147, 22)
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Now it is 17.9 mag (Mar. 10, A. Diepvens). It will brighten up to 15 mag from 2024 to 2025. In 2023, it is observable at 18 mag in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 9 26.61 26 8.2 3.752 4.309 117 17.9 20:22 (180, 29)
Apr. 15 9 26.10 25 54.6 3.836 4.297 110 18.0 19:54 (180, 29)
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Now it is 17.4 mag (Apr. 3, E. Cortes). It will be getting higher gradually, but it will be fading after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 21 19.43 1 25.5 2.393 2.020 56 18.0 4:53 (244, 30)
Apr. 15 21 29.99 3 47.2 2.370 2.060 59 18.1 4:59 (237, 32)
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It was predicted to brighten up to 16 mag in 2023. But actually, it is very faint as 18.1 mag (Mar. 29, ATLAS Chile). In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 20 6.03 -75 18.1 3.080 3.285 92 18.0 4:53 (348, 47)
Apr. 15 20 24.71 -75 34.7 3.040 3.297 95 18.0 4:59 (350, 47)
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It was observed at 17 mag in 2022 autumn. It was predicted to be observable at 17 mag also in 2023 spring. But actually, it is extremely faint as 19.7 mag (Apr. 1, Taras Prystavski).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 20 4.49 8 38.6 1.855 1.855 74 19.6 4:53 (221, 37)
Apr. 15 19 50.90 11 6.6 1.732 1.897 83 19.6 4:59 (207, 40)
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Tiny comet, but it approached to Sun down to 0.8 a.u. in January, and it will approach to Earth down to 0.6 a.u. in March. It was expected to brighten up to 14 mag from January to March. But actually, it became disintegrated before the perihelion passage. Now it is extremely faint as 18.2 mag (Feb. 20, Thomas Lehmann).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 7 49.72 12 26.3 1.061 1.573 99 20.9 19:09 (172, 42)
Apr. 15 8 5.86 17 2.9 1.237 1.666 95 21.3 19:00 (172, 37)
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In the last apparition, it had faded before the perihelion passage. It was expected to brighten up to 17 mag if it would become as bright as its last apparition. But actually, it is extremely faint as 22.2 mag (Mar. 27, Pan-STARRS 1, Haleakala). It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Apr. 8 14 9.34 5 29.7 1.799 2.760 159 21.7 1:07 (180, 50)
Apr. 15 14 5.69 6 10.8 1.775 2.747 162 21.6 0:36 (180, 49)
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