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Now it is bright as 10.1 mag (Mar. 3, Osamu Miyazaki). It stays bright as 9-10 mag until March. In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it stays extremely low after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 2 52.91 24 49.6 1.453 1.359 64 9.6 19:22 ( 91, 46)
Mar. 12 3 14.82 28 29.0 1.508 1.383 63 9.9 19:28 ( 97, 45)
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Now it is bright as 11.0 mag (Feb. 26, Osamu Miyazaki). It is expected to be observable at 5-6 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it stays observable in good condition until autumn. However, it is not observable at the high light from autumn to 2023 summer. In the Southern Hemisphere, it stays observable in good condition after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 43.52 11 19.3 4.114 3.828 66 9.9 5:01 (290, 44)
Mar. 12 18 47.10 11 22.0 3.965 3.764 71 9.7 4:51 (293, 47)
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Now it is 9.9 mag (Mar. 3, Osamu Miyazaki). In the Northern Hemisphere, it will be getting lower after this, and it will be unobservable in May. In the Southern Hemisphere, it stays observable until July.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 6 34.40 20 42.6 3.070 3.589 113 10.3 19:43 ( 0, 76)
Mar. 12 6 35.26 19 34.1 3.177 3.598 107 10.4 19:28 ( 11, 74)
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Now it is 12.0 mag (Feb. 23, Thomas Lehmann). In the Northern Hemisphere, it stays extremely low until spring. In the Southern Hemisphere, it stays observable at 11 mag until June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 20 12.73 -18 25.8 2.132 1.558 42 11.0 5:01 (299, 8)
Mar. 12 20 34.92 -17 23.9 2.099 1.554 44 10.9 4:51 (298, 8)
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Brightened very rapidly. It is still bright as 10.9 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 5 4.62 13 25.1 0.767 1.277 92 11.1 19:22 ( 39, 64)
Mar. 12 5 37.03 14 28.8 0.824 1.327 93 11.7 19:28 ( 41, 64)
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It brightened up to 3 mag from mid December to late December. Now it is fading. It has already faded down to 11.0 mag (Feb. 23, Martin Masek). In the Southern Hemisphere, it is appearing in the morning sky. In the Northern Hemisphere, it will become observable again at 13 mag in late April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 21 21.42 -34 52.3 2.009 1.351 36 11.3 5:01 (303,-14)
Mar. 12 21 18.06 -34 51.4 2.013 1.459 43 11.7 4:51 (305,-10)
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Now it is bright as 12.0 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 11.5 mag in spring. It stas observable in good condition for a long time. In the Northern Hemisphere, it stays somewhat low until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 12 1.97 -26 28.8 3.474 4.317 144 11.6 1:13 ( 0, 28)
Mar. 12 11 59.34 -25 22.8 3.417 4.307 150 11.6 0:43 ( 0, 29)
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It brightened up to 15.1 mag in February (Feb. 1, Ken-ichi Kadota). Now it is not observable. It is expected to brighten up to 4.5 mag in April. However, it is not observable at the high light. In the Northern Hemisphere, it will appear at 6 mag in mid May, and it stays observable in good condition after that while the comet will be fading. In the Southern Hemisphere, it is not observable until August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 23 48.78 -0 20.0 2.156 1.212 13 12.5 19:22 ( 93, -5)
Mar. 12 0 5.48 -0 30.5 2.038 1.074 10 11.9 19:28 ( 96, -9)
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Now it is 14.7 mag (Feb. 3, Giuseppe Pappa). It stays 12-13 mag for a while. But actually, it is fainter than this ephemeris recently. It is observable in excellent condition in the Southern Hemisphere. It locates low until May in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 54.27 -22 45.1 1.746 1.544 61 12.1 5:01 (316, 18)
Mar. 12 19 16.49 -22 54.2 1.707 1.546 63 12.1 4:51 (315, 17)
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It brightened up to 8.5 mag from autumn to winter (Dec. 2, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. It has already faded down to 11.7 mag (Mar. 3, Osamu Miyazaki). It stays observable in good condition for a long time. It locates somewhat low in the Southern Hemisphere,
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 8 24.57 26 19.5 1.022 1.878 137 12.3 21:33 ( 0, 81)
Mar. 12 8 27.77 25 35.7 1.124 1.933 131 12.7 21:08 ( 0, 80)
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Now it is bright as 12.4 mag (Feb. 22, Seiichi Yoshida). It stays 12 mag until spring. In the Northern Hemisphere, it is observable only until early March. In the Southern Hemisphere, it is not observable until late May. But it will be observable in good condition after that. Sandor Szabo reported it is very bright as 10.2 mag on Mar. 1.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 23 1.44 42 14.7 1.524 1.142 48 12.5 5:01 (226, 12)
Mar. 12 23 38.47 38 26.0 1.600 1.089 42 12.4 19:28 (130, 10)
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Now it is 14.9 mag (Nov. 28, Thomas Lehmann). It is expected to brighten up to 11 mag from spring to summer. In the Southen Hemisphere, it stays observable in good condition for a long time after this. In the Northern Hemisphere, it is hardly observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 20 18.71 -18 20.5 2.817 2.175 41 13.6 5:01 (298, 7)
Mar. 12 20 26.30 -20 0.0 2.675 2.126 47 13.4 4:51 (301, 8)
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Now it is 16.1 mag (Feb. 19, J. L. Virlichie, P. Traverse, H. Roy). It was expected to brighten up to 13 mag in spring. But actually, it is fainter than this ephemeris recently. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 9 11.31 -70 12.4 2.951 3.292 101 13.5 22:14 ( 0,-15)
Mar. 12 8 29.49 -69 5.4 2.928 3.272 101 13.5 21:06 ( 0,-14)
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Now it is 12.7 mag (Feb. 27, Toshihiko Ikemura, Hirohisa Sato). It is observable at 13 mag in good condition until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 9 33.76 19 23.2 1.449 2.385 154 13.7 22:41 ( 0, 74)
Mar. 12 9 29.53 19 28.2 1.470 2.367 147 13.7 22:09 ( 0, 74)
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Now it is bright as 12.7 mag (Feb. 27, Toshihiko Ikemura, Hirohisa Sato). It is observable until April in the Southern Hemisphere, or until May in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 4 21.88 29 14.2 5.976 5.963 84 13.7 19:22 ( 84, 66)
Mar. 12 4 24.84 29 9.4 6.089 5.966 78 13.7 19:28 ( 89, 59)
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Now it is 13.4 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 10 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn. In the Southern Hemipshere, it stays unobservable until 2023 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 12 23.27 56 44.4 4.327 4.987 127 14.2 1:35 (180, 68)
Mar. 12 12 10.63 58 10.9 4.297 4.930 124 14.1 0:55 (180, 67)
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It brightened up to 12.3 mag from spring to summer (June 15, Marco Goiato). Now it is fading. It has already faded down to 14.7 mag (Feb. 27, Toshihiko Ikemura, Hirohisa Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 13 58.68 19 5.4 3.695 4.453 135 14.1 3:10 ( 0, 74)
Mar. 12 13 50.38 21 4.0 3.676 4.493 141 14.1 2:34 ( 0, 76)
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Now it is 14.1 mag (Mar. 2, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it locates extremely low in 2022, but it will be observable in good condition in 2023.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 16 36.64 36 45.7 4.733 4.980 98 14.3 5:01 (256, 80)
Mar. 12 16 32.51 37 48.8 4.621 4.940 102 14.2 4:51 (239, 84)
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Now it is 15.3 mag (Feb. 23, Thomas Lehmann). It will brighten up to 13 mag in summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 15.58 -25 49.4 3.287 3.102 70 14.4 5:01 (325, 20)
Mar. 12 18 24.32 -26 1.3 3.188 3.095 75 14.4 4:51 (327, 21)
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Now it is 15.7 mag (Feb. 2, Thomas Lehmann). It will brighten up to 12.5 mag in summer. In the Southern Hemisphere, it stays observable in excellent condition for a long time, although it became low temporarily in February. In the Northern Hemisphere, it is not observable until August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 22 37.06 -55 17.2 4.092 3.526 49 14.5 5:01 (317,-34)
Mar. 12 22 40.04 -54 45.9 4.011 3.490 52 14.4 4:51 (317,-32)
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It brightened up to 10.6 mag in autumn (Oct. 10, Osamu Miyazaki). Now it is fading. It has already faded down to 13.7 mag (Feb. 26, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 6 33.63 13 2.7 1.761 2.344 113 14.5 19:42 ( 0, 68)
Mar. 12 6 39.68 13 32.2 1.879 2.387 108 14.8 19:28 ( 5, 68)
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Now it is 14.7 mag (Feb. 23, Thomas Lehmann). It is expected to brighten up to 11 mag in summer. In the Northern Hemisphere, it stays observable in good condition until June when it brightens up to 11 mag. But it is not observable after the high light. In the Souther Hemisphere, it is not observable until October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 0 8.68 52 39.4 2.769 2.441 60 15.1 19:22 (137, 27)
Mar. 12 0 25.05 53 26.7 2.726 2.359 58 14.9 19:28 (139, 25)
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Now it is 15.2 mag (Mar. 2, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 11 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until November. But it becomes unobservable after that. In the Southern Hemisphere, it is appearing in the morning sky. It stays observable in good condition after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 54.70 17 27.6 5.374 5.041 65 15.1 5:01 (281, 46)
Mar. 12 18 57.41 17 36.0 5.250 4.994 69 15.0 4:51 (284, 49)
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Now it is 15.8 mag (Feb. 20, J. L. Virlichie, P. Traverse, H. Roy). It stays at 15-16 mag for a long time. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemiphere, it locates extremely low in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 17 20.89 -37 46.8 5.117 5.080 82 15.1 5:01 (342, 14)
Mar. 12 17 19.83 -38 56.5 5.006 5.090 89 15.1 4:51 (346, 14)
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Now it is 15.3 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It continues brightening even after the perihelion passage. It is observable at 15 mag in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 10 17.58 -16 31.8 1.465 2.400 154 15.2 23:25 ( 0, 39)
Mar. 12 10 17.07 -13 33.4 1.474 2.414 155 15.2 22:57 ( 0, 42)
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Now it is 14.3 mag (Mar. 2, Toshihiko Ikemura, Hirohisa Sato). It became brighter after the perihelion passage. It stays observable at 14-15 mag for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 11 59.28 10 16.3 2.601 3.568 165 15.2 1:11 ( 0, 65)
Mar. 12 11 46.05 9 45.2 2.618 3.605 172 15.3 0:30 ( 0, 65)
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It brightened up to 9.5 mag in early summer in 2021 (June 27, Marco Goiato). Now it is fading. It has faded down to 12.7 mag in autumn (Nov. 22, Thomas Lehmann). In the Southern Hemisphere, it is appearing in the morning sky. In the Northern Hemisphere, it is not observable until June when the comet will fade down to 17 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 21 36.44 -31 32.0 4.176 3.377 32 15.4 5:01 (298,-15)
Mar. 12 21 47.32 -31 17.8 4.184 3.435 36 15.6 4:51 (299,-13)
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Now it is 16.2 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this. In the Northern Hemisphere, it stays observable in good condition for a long time. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 15 10.57 38 11.1 2.302 2.872 115 15.6 4:21 (180, 87)
Mar. 12 14 50.67 40 38.2 2.275 2.916 121 15.7 3:34 (180, 85)
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Now it is 14.8 mag (Mar. 1, Sandor Szabo). It stays 15 mag until March, and it is observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 11 43.07 11 32.8 1.253 2.233 168 15.8 0:54 ( 0, 66)
Mar. 12 11 38.39 12 20.9 1.271 2.257 170 15.9 0:22 ( 0, 67)
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It has not been observed yet in this apparition. It will brighten very rapidly up to 9 mag in May. The condition is very bad in this apparition. It is observable only in the extremely low sky from mid May to mid July in the Northern Hemisphere, or from early June to early August in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 22 14.47 -12 52.0 2.055 1.114 13 16.8 5:01 (277,-12)
Mar. 12 22 41.76 -10 18.1 1.958 1.016 13 15.8 4:51 (274,-13)
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It brightened rapidly. Now it is 15.8 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition for a while. But it will fade out rapidly after this, and it will be fainter than 18 mag in May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 7 51.29 13 26.2 1.818 2.595 132 16.0 20:59 ( 0, 68)
Mar. 12 7 51.53 13 14.8 1.899 2.609 125 16.2 20:32 ( 0, 68)
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Now it is 15.8 mag (Feb. 21, ATLAS-MLO, Mauna Loa). It stays observable at 16 mag from 2021 to 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 16 19.06 23 3.1 4.554 4.860 102 16.1 5:01 (331, 76)
Mar. 12 16 20.23 24 55.7 4.495 4.874 106 16.1 4:51 (345, 80)
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Now it is 17.4 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 11 mag from summer to autumn. It stays observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes extremely low from August to September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 10 26.41 30 21.7 1.359 2.294 154 16.3 23:33 ( 0, 85)
Mar. 12 10 16.07 31 12.0 1.332 2.235 147 16.1 22:55 ( 0, 86)
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First return of a new periodic comet observed at 16 mag from 2003 to 2004. Now it is 16.3 mag (Feb. 26, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag until March, and it stays observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 6 2.35 11 35.2 3.573 3.965 106 16.2 19:22 ( 7, 66)
Mar. 12 6 4.59 12 27.6 3.677 3.970 99 16.3 19:28 ( 26, 66)
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It has not been observed yet in this apparition. It was expected to be observable at 16 mag in good condition in spring. But actually, it is fainter than 19.2 mag (Jan. 22, John Drummond).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 17 46.83 -33 35.3 1.312 1.457 77 16.5 5:01 (335, 16)
Mar. 12 18 12.78 -32 28.1 1.266 1.445 78 16.4 4:51 (333, 16)
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Now it is 16.3 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It was observed at 15 mag in 2021. Now it is fading. It stays observable at 17 mag for a while in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 37.02 7 5.2 5.379 5.078 67 16.6 5:01 (296, 43)
Mar. 12 18 40.15 8 27.8 5.303 5.094 72 16.6 4:51 (298, 46)
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Brightened rapidly. Now it is 16.5 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It becomes too low to observe in mid March in the Southern Hemisphere, or in mid April in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 2 48.44 13 0.9 4.260 3.854 59 16.7 19:22 ( 78, 39)
Mar. 12 2 55.72 13 23.8 4.354 3.861 54 16.7 19:28 ( 83, 34)
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Now it is 17.1 mag (Feb. 20, C. Bell). It will brighten up to 14 mag in early 2023. It stays observable in good condition until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 4 25.56 8 17.0 4.611 4.581 82 16.7 19:22 ( 49, 54)
Mar. 12 4 29.07 8 57.5 4.673 4.540 76 16.7 19:28 ( 59, 49)
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Now it is 17.0 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 11.5 mag in 2022 winter. It stays observable while the comet will be brightening slowly.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 3 21.91 15 39.6 3.143 2.922 68 16.9 19:22 ( 74, 47)
Mar. 12 3 28.95 16 12.4 3.197 2.883 62 16.8 19:28 ( 80, 42)
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It brightened very rapidly, and brightened up to 8.9 mag (Sept. 11, Chris Wyatt). Now it is fading. It has already faded down to 18.5 mag (Feb. 11, J. L. Virlichie, P. Traverse, H. Roy). In the Southern Hemisphere, it stays observable after this while the comet will be fading. It is not observable after this in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 17 52.93 -55 42.1 2.686 2.656 77 16.8 5:01 (343, -4)
Mar. 12 17 57.38 -55 59.1 2.662 2.723 82 17.0 4:51 (345, -4)
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Now it is 17.2 mag (Jan. 18, J. Drummond). It brightened rapidly. It stays 17 mag for a long time from 2021 to 2022. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it locates extremely low, and it is observable only until April.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 7 2.79 -46 18.4 5.044 5.395 105 16.8 20:10 ( 0, 9)
Mar. 12 6 56.42 -45 46.5 5.097 5.403 102 16.9 19:36 ( 0, 9)
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First return of a new periodic comet which brightened up to 17 mag in 2011. Now it is extremely faint as 20.4 mag (Feb. 4, J.-G. Bosch, F. Kugel, A. Klotz, J. Nicolas). It brightened up to 16.8 mag in October (Oct. 10, Ken-ichi Kadota), however, it has been fading after that.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 15 25.88 -14 53.6 1.171 1.787 111 16.9 4:36 ( 0, 40)
Mar. 12 15 30.48 -15 20.9 1.139 1.819 116 16.9 4:13 ( 0, 40)
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Now it is 16.4 mag (Feb. 21, 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)
Mar. 5 19 19.28 53 45.7 9.256 9.065 75 16.9 5:01 (226, 49)
Mar. 12 19 21.40 54 44.0 9.246 9.074 76 16.9 4:51 (224, 52)
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It will brighten up to 16 mag from spring to summer. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 18 54.29 -21 58.5 3.455 3.107 61 17.0 5:01 (315, 18)
Mar. 12 19 3.55 -21 57.7 3.373 3.111 66 17.0 4:51 (317, 20)
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Now it is 16.9 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17-18 mag for a long time until 2024.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 14 27.25 -2 18.8 8.207 8.851 127 17.0 3:38 ( 0, 53)
Mar. 12 14 23.92 -1 47.4 8.111 8.847 135 17.0 3:07 ( 0, 53)
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Now it is 16.5 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). It will be observable at 17 mag in good condition in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 13 42.20 -9 42.1 3.935 4.708 136 17.1 2:53 ( 0, 45)
Mar. 12 13 40.36 -9 35.1 3.865 4.708 144 17.1 2:24 ( 0, 45)
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Now it is 16.7 mag (Feb. 17, D. Buczynski). It started fading before the perihelion passage. It was predicted to stay at 16 mag for a long time, but actually, it will be fainter than 18 mag in autumn. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2023.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 23 36.30 76 14.7 3.783 3.786 82 17.1 19:22 (164, 32)
Mar. 12 23 43.79 75 37.2 3.837 3.779 79 17.2 19:28 (164, 30)
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Now it is 16.8 mag (Feb. 11, ATLAS Chile, Rio Hurtado). It will brighten up to 13-14 mag from 2024 to 2025.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 7 10.33 -30 3.5 7.891 8.341 113 17.2 20:18 ( 0, 25)
Mar. 12 7 9.62 -29 33.8 7.909 8.304 110 17.2 19:50 ( 0, 25)
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It brightened up to 16.4 mag from autumn to winter (Oct. 6, ATLAS-MLO, Mauna Loa). Now it is fading. It has already faded down to 18.0 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 12 44.98 -12 50.8 1.341 2.244 147 17.3 1:56 ( 0, 42)
Mar. 12 12 39.11 -13 2.6 1.338 2.280 155 17.4 1:23 ( 0, 42)
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It brightened up to 13.1 mag in autumn (Oct. 28, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. But it is still bright as 16.2 mag (Feb. 28, Toshihiko Ikemura, Hirohisa Sato). Sandor Szabo reported it is 15.0 mag visually on Mar. 1. It stays observable in good condition for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 3 46.17 14 28.9 2.048 2.007 73 17.3 19:22 ( 68, 51)
Mar. 12 4 1.26 15 26.4 2.149 2.042 70 17.6 19:28 ( 73, 48)
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Now it is 17.5 mag (Feb. 20, ATLAS-MLO, Mauna Loa). It continued brightening for a while even after the perihelion passage. It stays observable at 17 mag in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 4 31.83 -3 48.2 4.097 4.084 82 17.4 19:22 ( 37, 45)
Mar. 12 4 35.78 -2 43.8 4.210 4.103 77 17.5 19:28 ( 46, 41)
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Now it is 18.4 mag (Jan. 9, J. Drummond). In the Southern Hemisphere, it stays observable for a long time. In the Northern Hemisphere, it is observable in low sky in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 10 16.11 -48 19.7 3.500 4.144 124 17.5 23:22 ( 0, 7)
Mar. 12 10 6.23 -46 17.9 3.520 4.194 127 17.6 22:45 ( 0, 9)
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Now it is 17.8 mag (Feb. 27, Toshihiko Ikemura, Hirohisa Sato). It is observable at 17 mag from November to March. It is observable in good condition in the Northern Hemisphere, but it locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 5 36.00 32 1.2 2.082 2.466 100 17.5 19:22 ( 72, 82)
Mar. 12 5 43.58 32 19.5 2.161 2.461 95 17.6 19:28 ( 83, 77)
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Now it is 17.5 mag (Feb. 17, J. L. Martin). It is expected to brighten up to 12 mag from winter to summer in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 spring. In the Southern Hemisphere, it is not observable until summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 1 56.22 45 16.9 5.292 4.950 64 17.6 19:22 (123, 41)
Mar. 12 2 2.76 44 35.6 5.322 4.891 59 17.5 19:28 (123, 36)
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Now it is 17.8 mag (Mar. 2, Toshihiko Ikemura, Hirohisa Sato). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. It locates extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 14 45.81 45 43.2 7.375 7.885 117 17.6 3:56 (180, 79)
Mar. 12 14 42.26 46 11.3 7.388 7.932 120 17.6 3:25 (180, 79)
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Now it is 18.6 mag (Feb. 6, ATLAS-MLO, Mauna Loa). It stays 17-18 mag for a long time from 2021 to 2022. It is observable in excellent condition in the Northern Hemisphere, In the Southern Hemisphere, it is not observable until June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 2 37.17 26 53.8 5.756 5.360 61 17.6 19:22 ( 96, 43)
Mar. 12 2 36.98 26 43.6 5.867 5.357 54 17.7 19:28 (100, 37)
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Now it is 17.1 mag (Feb. 18, J.-G. Bosch, F. Kugel). It will brighten up to 15-16 mag in 2023. Cometary activity was detected by Cristovao Jacques on Dec. 12, and by Luca Buzzi and Andrea Aletti on Feb. 23.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 6 39.40 -20 15.8 4.771 5.201 110 17.6 19:47 ( 0, 35)
Mar. 12 6 33.77 -19 17.1 4.817 5.155 104 17.7 19:28 ( 4, 36)
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In the Northern Hemisphere, it is observable until April when it brightens up to 16 mag. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 2 16.51 18 22.6 1.794 1.453 54 17.8 19:22 ( 89, 35)
Mar. 12 2 25.50 18 18.0 1.796 1.368 49 17.6 19:28 ( 92, 30)
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Now it is 17.7 mag (Feb. 19, J. L. Virlichie, P. Traverse, H. Roy). It was observed at 16 mag from 2020 to 2021. Now it is fading. It will be fainter than 18 mag in spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 15 29.08 -39 41.4 5.675 5.982 103 17.7 4:40 ( 0, 15)
Mar. 12 15 23.82 -40 20.7 5.594 6.015 110 17.7 4:07 ( 0, 15)
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First return of a new periodic comet which brightened up to 16.5 mag in 1997. Now it is 17.7 mag (Feb. 27, Toshihiko Ikemura, Hirohisa Sato). It was fainter than originally predicted at the recovery, but it brightened very rapidly. It is observable in good condition from January to March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 8 24.14 22 11.1 1.220 2.073 138 17.8 21:32 ( 0, 77)
Mar. 12 8 25.17 20 55.6 1.259 2.065 132 17.8 21:06 ( 0, 76)
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Now it is 17.6 mag (Feb. 20, ATLAS-MLO, Mauna Loa). It will be fainter than 18 mag soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 7 37.85 5 8.3 4.593 5.279 129 17.8 20:46 ( 0, 60)
Mar. 12 7 37.45 5 29.3 4.683 5.286 122 17.8 20:18 ( 0, 60)
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Now it is 17.1 mag (Feb. 23, Thomas Lehmann). It was expected to brighten up to 15.5 mag in winter. But actually, it is fading even before the perihelion passage. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable at all in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 6 15.26 78 28.5 2.626 2.961 99 17.8 19:26 (180, 47)
Mar. 12 6 18.40 74 36.0 2.682 2.968 96 17.9 19:28 (177, 51)
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Now it is 17.4 mag (Mar. 3, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 16 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is observable only until May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 10 7.91 -15 55.8 3.619 4.532 154 17.9 23:15 ( 0, 39)
Mar. 12 10 2.03 -16 9.8 3.594 4.490 151 17.8 22:41 ( 0, 39)
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Now it is 18.5 mag (Feb. 20, Palomar Mountain--ZTF). It was expected to brighten up to 16.5-17 mag in winter. In its last apparition in 2015, it brightened up to 13 mag. But in this apparition, the brightness evolution is completely asteroidal.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 1 52.20 1 34.8 2.142 1.576 43 18.3 19:22 ( 77, 21)
Mar. 12 2 10.79 3 59.9 2.169 1.571 41 18.3 19:28 ( 81, 20)
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Now it is 18.7 mag (Feb. 13, Giuseppe Pappa). It was observed at 9-10 mag from late July to early August. Although it had been unobservable for a long time, it is appearing in the morning sky now.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Mar. 5 16 42.70 -29 34.6 3.024 3.198 90 19.5 5:01 (347, 24)
Mar. 12 16 42.98 -30 15.4 2.996 3.281 97 19.6 4:51 (352, 24)
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