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It brightened up to 5.6 mag in early December (Dec. 9, Marco Goiato). Now it is not observable. It will appear in the morning sky again in April. But then it will be fainter than 15 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 16.58 -22 47.4 1.277 0.399 13 5.5 2:53 (306, -9)
Dec. 19 17 19.18 -20 44.1 1.392 0.434 7 6.1 2:54 (310,-16)
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Now it is very bright as 8.5 mag (Dec. 9, Marco Goiato). In the Northern Hemisphere, it stays observable in excellent condition for a long time. In the Southern Hemisphere, it stays locating extremely low after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 5 19.57 35 39.2 0.471 1.447 167 8.8 23:53 (180, 19)
Dec. 19 5 16.36 40 13.2 0.532 1.498 161 9.2 23:23 (180, 14)
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Now it is 10.0 mag (Dec. 9, Chris Wyatt). It stays observable in the evening low sky while it will be getting fainter gradually, until early January in the Southern Hemisphere, or late February in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 21 15.87 -19 27.5 1.922 1.586 55 10.6 20:54 ( 82, 22)
Dec. 19 21 37.41 -17 37.8 2.000 1.624 53 10.9 20:59 ( 82, 19)
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It brightened very rapidly in early December. Now it is very bright as 13.5 mag (Dec. 7, Michael Jager). In addition, Michael Jager observed two more components of 17.5-18.0 mag. It stays observable for a long time in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 20 50.98 -9 30.5 0.802 0.811 52 12.0 20:54 ( 87, 12)
Dec. 19 21 26.23 -9 7.6 0.728 0.809 53 11.6 20:59 ( 88, 13)
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Brightened rapidly. Now it is very bright as 10.3 mag (Dec. 9, Chris Wyatt). In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it will be extremely low after January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 0 24.13 15 51.4 0.650 1.362 111 11.7 20:54 (147, 32)
Dec. 19 0 39.39 19 57.2 0.700 1.381 109 12.6 20:59 (145, 26)
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First return of a new periodic comet which brightened up to 13 mag in 2009. Now it is bright as 12.8 mag (Dec. 9, Chris Wyatt). It will brighten up to 12 mag and will be observable in excellent condition in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 4 29.14 -9 48.2 0.383 1.317 145 12.3 23:03 (180, 65)
Dec. 19 4 33.44 -7 2.4 0.376 1.309 144 12.2 22:40 (180, 62)
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It brightened up to 13.5 mag in summer (July 31, Ken-ichi Kadota). It is expected to brighten up to 12 mag from autumn to winter. In the Southern Hemisphere, it will appear in the morning sky in December, then it stays observable in good condition. In the Northern Hemisphere, it will be observable in the extremely low sky only from November to December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 14 8.44 -28 21.4 2.300 1.710 42 12.4 2:53 (293, 17)
Dec. 19 14 15.90 -32 58.2 2.229 1.720 47 12.4 2:54 (295, 23)
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It will approach to Sun down to 0.14 a.u. on Dec. 7, and will brighten up to 11 mag. But it is not observable at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 17 50.71 -20 34.8 1.154 0.227 8 12.9 20:54 ( 52,-14)
Dec. 19 19 8.31 -14 38.4 1.166 0.429 20 14.8 20:59 ( 64,-11)
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Now it is 13.8 mag (Dec. 9, Chris Wyatt).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 2 17.33 25 10.8 5.062 5.843 139 13.3 20:54 (179, 30)
Dec. 19 2 15.81 24 52.5 5.141 5.844 131 13.3 20:59 (170, 29)
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It had been observed as 8-9 mag for a long time in 2020. Now it is not observable. It will appear in the morning sky at 14.5 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 28.35 -23 17.0 4.152 3.192 11 14.1 2:53 (308,-11)
Dec. 19 16 36.76 -24 22.6 4.191 3.259 16 14.2 2:54 (306, -6)
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Now it is 14.2 mag (Nov. 23, Thomas Lehmann). It will brighten up to 11 mag in winter in 2022. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until 2021 November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 23 58.03 59 37.9 4.475 4.971 114 14.1 20:54 (163, -9)
Dec. 19 0 1.58 58 40.6 4.483 4.930 111 14.1 20:59 (159,-10)
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Now it is 14.3 mag (Nov. 12, Toshihiko Ikemura, Hirohisa Sato). It is expected to be observable at 5-6 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it is not observable at the high light from 2022 summer to 2023 summer. In the Southern Hemisphere, it is not observable now. But it will be observable in good condition at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 17 40.33 35 45.3 8.052 7.593 59 14.3 20:54 (106,-50)
Dec. 19 17 44.66 35 27.5 8.001 7.539 58 14.3 2:54 (256,-53)
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It approached to Earth down to 0.5 a.u. in November, and it brightened very rapidly. Now it is very bright as 14.5 mag (Nov. 21, Michael Jager). It is observable in excellent condition. But it seems to fade out very rapidly after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 1 21.30 8 42.3 0.602 1.400 121 14.3 20:54 (160, 44)
Dec. 19 1 40.55 7 32.5 0.644 1.411 118 15.0 20:59 (155, 44)
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It stays 13-14 mag from 2020 to 2021. It is not observable until January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 12.90 -16 55.7 3.823 2.891 16 14.3 2:53 (301,-12)
Dec. 19 16 24.72 -17 42.2 3.789 2.886 20 14.3 2:54 (299, -9)
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Now it is 14.8 mag (May 14, Toshiyuki Takahashi). It will brighten up to 13 mag in 2021. In the Southern Hemisphere, it becomes too low to observe temporarily from mid October to mid December. In the Northern Hemisphere, it is not observable until July in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 15 49.81 -42 47.1 4.848 3.993 26 14.4 2:53 (317, 9)
Dec. 19 15 59.89 -44 4.4 4.785 3.967 30 14.4 2:54 (316, 12)
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It will brighten up to 11.5 mag in spring. However, the condition is very bad in this apparition. It will appear in the morning low sky in March in the Southern Hemisphere, or in June in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 52.27 -16 43.0 2.724 1.757 8 15.3 2:53 (308,-19)
Dec. 19 17 11.99 -17 31.8 2.677 1.718 10 15.0 2:54 (307,-17)
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Now it is 16.1 mag (Nov. 18, Thomas Lehmann). It will brighten up to 13.5 mag from winter to spring in 2021. In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it stays extremely low until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 23 37.53 38 30.9 1.300 1.857 107 15.3 20:54 (149, 8)
Dec. 19 23 47.38 36 41.6 1.282 1.791 103 15.1 20:59 (144, 6)
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It approached to Sun down to 0.29 a.u. on July 3, and it brightened up to 0.6 mag (Alan Hale). Now it is fading. It has faded down to 11.3 mag in September (Sept. 27, Mitsunori Tsumura). Now it is not observable. It will appear in the morning sky at 16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 13.37 -21 38.2 3.932 2.991 14 15.1 2:53 (305, -9)
Dec. 19 16 18.52 -22 12.5 3.984 3.083 20 15.3 2:54 (302, -5)
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Now it is 14.9 mag (Oct. 10, Chris Wyatt). It will brighten up to 13.5 mag in spring. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes unobservable temporarily in December. In the Northern Hemisphere, it is not observable until spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 17 31.87 -43 52.8 4.462 3.561 21 15.3 20:54 ( 33, 0)
Dec. 19 17 35.22 -43 20.1 4.447 3.540 20 15.2 2:54 (328, -1)
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Now it is 15.0 mag (Nov. 15, Chris Wyatt). It stays 14-15 mag until 2021. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until June in 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 20 3.68 -59 52.0 5.023 4.408 46 15.2 20:54 ( 35, 28)
Dec. 19 20 17.61 -58 33.9 5.051 4.397 44 15.2 20:59 ( 35, 25)
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Now it is 16.1 mag (Nov. 14, Martin Masek). It is observable only until mid December in the Southern Hemisphere, or mid January in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 20 31.72 -19 29.9 2.726 2.150 45 15.3 20:54 ( 76, 14)
Dec. 19 20 45.67 -17 56.7 2.768 2.137 41 15.3 20:59 ( 75, 9)
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Now it is 14.7 mag (Nov. 23, Thomas Lehmann). In the Northern Hemisphere, it stays observable for a long time while it is getting fainter slowly. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 16 5.06 59 45.1 4.834 4.834 84 15.4 2:53 (218,-43)
Dec. 19 16 11.80 59 43.6 4.858 4.880 85 15.4 2:54 (218,-40)
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Now it is 15.9 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It will stay at 14 mag for a long time from 2021 to 2022. In the Northern Hemisphere, it stays observable in good condition while brightening gradually, although it becomes unobservable temporarily in December. In the Southern Hemisphere, it is not observable until February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 17 50.88 6 42.0 6.400 5.578 30 15.5 20:54 ( 73,-34)
Dec. 19 17 54.31 6 4.0 6.390 5.555 29 15.5 20:59 ( 66,-39)
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Now it is 15.5 mag (Nov. 12, Martin Masek). It is expected to brighten up to 13 mag in 2022. In 2020, it is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it is observable from autumn to winter, but it locating extremely low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 8 32.06 -38 56.3 5.793 6.091 103 15.7 2:53 (323, 85)
Dec. 19 8 30.64 -39 30.4 5.699 6.053 106 15.6 2:40 ( 0, 85)
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First return of a new periodic comet which brightened up to 17 mag in 2013. Now it is 17.2 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 16 mag and will be observable in good condition in winter. In the Southern Hemisphere, it locates low until December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 11 37.65 27 37.8 0.466 1.134 96 15.9 2:53 (224, 11)
Dec. 19 12 7.70 23 22.6 0.466 1.124 94 15.9 2:54 (227, 15)
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Now it is 16.3 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 14.5 mag from spring to summer in 2021. In the Southern Hemisphere, it stays observable in excellent condition for a long time. In the Northern Hemisphere, it is observable in good condition in 2020, however, it will be unobservable in 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 21 19.02 -32 33.1 3.457 2.981 53 15.9 20:54 ( 69, 29)
Dec. 19 21 22.66 -33 14.8 3.519 2.949 47 15.9 20:59 ( 65, 24)
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Now it is 15.1 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays 15-16 mag until winter. In the Northern Hemisphere, it stays observable in good condition for a long time after this. In the Southern Hemisphere, it will be getting lower after this, and it will be unobservable in January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 22 54.35 -6 32.3 0.977 1.290 82 16.0 20:54 (109, 35)
Dec. 19 23 10.11 -1 8.3 1.014 1.296 80 16.1 20:59 (111, 28)
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Now it is 15.6 mag (Nov. 10, Toshihiko Ikemura, Hirohisa Sato). It stays 15-16 mag for a long time until 2021. In the Northern Hemisphere, it stays observable in good condition for a long time, although it becomes very low temporarily from December to January. In the Southern Hemisphere, it will be observable in the extremely low sky only in next spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 18 41.42 20 18.1 5.303 4.702 47 16.1 20:54 ( 94,-31)
Dec. 19 18 44.95 20 50.1 5.344 4.719 46 16.1 20:59 ( 91,-37)
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Now it is 17 mag (Nov. 19, Giuseppe Pappa). It will approach to Earth down to 0.46 a.u. in April, and it is expected to brighten up to 12.5 mag and to be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 21 37.67 -20 57.7 1.898 1.643 59 16.5 20:54 ( 83, 27)
Dec. 19 21 28.91 -20 17.0 1.982 1.563 51 16.4 20:59 ( 78, 19)
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It approached to Sun down to 0.34 a.u. on Oct. 20. Then the nucleus was disintegrated. After the perihelion passage, it was observed at 12.5 mag (Oct. 28, Michael Jager). Now only the remnant tail is visible. In the Northern Hemisphere, it stays observable while the comet will be fading rapidly. In the Southern Hemipshere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 15 12.34 6 32.3 1.834 1.293 42 16.4 2:53 (273,-15)
Dec. 19 15 21.91 6 7.6 1.908 1.419 46 16.9 2:54 (270,-11)
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It brightened up to 6.0 mag in June (June 13, Marco Goiato). Now it is fading. It has already faded down to 15.5 mag (Nov. 18, Thomas Lehmann). In the Northern Hemisphere, it stays observable for a long time until it fades out. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 18 52.42 24 53.4 3.297 2.820 53 16.4 20:54 (100,-31)
Dec. 19 19 5.11 25 26.1 3.399 2.903 52 16.7 20:59 ( 99,-35)
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It brightened up to 13.5 mag in last winter (Dec. 6, 2019, Chris Wyatt). Now it is fading slowly. Now it is 16.5 mag (Nov. 23, Toshihiko Ikemura, Hirohisa Sato). In the Southern Hemisphere, it stays observable for a long time. It locates somewhat low in the Northern Hemisphere. Taras Prystavski found its fragmentation on Sept. 12.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 1 19.53 -28 49.8 4.490 4.805 102 16.5 20:54 (112, 76)
Dec. 19 1 16.59 -27 21.5 4.625 4.847 97 16.6 20:59 (104, 68)
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Now it is 16.4 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It is observable at 16.5-17 mag from 2020 to 2021. In the Southern Hemisphere, it is not observable until summer in 2021
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 22 5.82 54 9.9 5.743 5.974 98 16.5 20:54 (147,-15)
Dec. 19 22 7.97 52 33.8 5.810 5.969 94 16.5 20:59 (143,-17)
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Now it is 16.4 mag (Nov. 12, Toshihiko Ikemura, Hirohisa Sato). It stays 16 mag until winter, and 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. 12 8 42.12 18 40.3 1.628 2.402 132 16.6 2:53 (188, 36)
Dec. 19 8 39.22 19 15.6 1.603 2.440 140 16.7 2:49 (180, 36)
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It brightened up to 13.8 mag in autumn in 2019 (Sept. 3, 2019, Chris Wyatt). Now it is fading slowly. It has already faded down to 16.5 mag (Nov. 8, Toshihiko Ikemura, Hirohisa Sato). But it is still bright visually as 14.8 mag (Nov. 5, Sandor Szabo).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 23 42.32 3 21.4 6.597 6.789 97 16.6 20:54 (128, 37)
Dec. 19 23 42.77 3 41.1 6.756 6.832 90 16.7 20:59 (121, 31)
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Now it is 16.6 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays at 16-17 mag from 2020 to 2021. In the Northern Hemisphere, it stays observable in good condition for a long time. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 19 8.50 29 29.2 9.300 8.834 58 16.8 20:54 (107,-30)
Dec. 19 19 11.24 29 39.2 9.333 8.831 56 16.8 20:59 (104,-36)
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Now it is 16.1 mag (Nov. 13, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13 mag in 2022. In 2021, it is observable at 15-16 mag in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 13 13.12 -0 40.6 4.300 3.955 63 16.9 2:53 (261, 13)
Dec. 19 13 18.78 -1 10.2 4.187 3.939 68 16.8 2:54 (258, 18)
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First return of a new periodic comet which brightened up to 14-15 mag in 2006. Now it is 17.8 mag (Nov. 23, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 15-16 mag from February to March, and it will be observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 11 3.98 1 55.9 1.477 1.828 93 17.1 2:53 (236, 36)
Dec. 19 11 19.05 1 38.2 1.397 1.808 97 16.9 2:54 (233, 39)
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It brightened up to 16.1 mag in last winter (Mar. 18, Toshihiko Ikemura, Hirohisa Sato). In 2021, it stays observable at 17 mag in good condition until summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 12 57.50 -19 38.4 7.180 6.743 60 17.1 2:53 (276, 27)
Dec. 19 13 1.04 -19 52.4 7.092 6.753 66 17.0 2:54 (273, 32)
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Now it is 16.5 mag (Nov. 21, Michael Jager). 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)
Dec. 12 2 17.51 32 48.5 1.053 1.911 139 17.1 20:54 (180, 22)
Dec. 19 2 21.93 30 59.0 1.088 1.907 133 17.1 20:59 (173, 24)
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Now it is 17.2 mag (Oct. 25, A. Mickleburgh). It stays 15-16 mag for a long time from 2021 spring to 2022 spring. It stays observable for a long time in the Northern Hemisphere. In the Southern Hemipsphere, it is not observable until the end of 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 19 29.82 43 50.1 4.027 3.864 73 17.3 20:54 (124,-32)
Dec. 19 19 32.63 43 37.1 4.026 3.824 71 17.3 20:59 (122,-37)
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First return of a new periodic comet which brightened up to 17.5 mag in 2012. Now it is 17.2 mag (Nov. 13, D. Buczynski). It stays observable at 17 mag in good condition from summer to winter. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 4 44.83 38 45.5 1.634 2.591 162 17.3 23:18 (180, 16)
Dec. 19 4 38.40 38 32.2 1.672 2.614 158 17.4 22:44 (180, 16)
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Now it is 17.5 mag (Nov. 12, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 14 mag from spring to summer, and it stays observable in good condition for a long time. In the Southern Hemisphere, it is not observable until late December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 12 43.56 25 12.8 3.152 3.168 81 17.5 2:53 (236, 3)
Dec. 19 12 53.13 25 13.0 3.015 3.112 86 17.3 2:54 (233, 6)
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Now it is 16.8 mag (Dec. 7, Toshihiko Ikemura, Hirohisa Sato). It is observable at 17-18 mag for a long time from late 2019 to early 2021. It will fade out before it passes the perihelion.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 5 44.63 17 37.7 3.516 4.493 171 17.4 0:22 (180, 37)
Dec. 19 5 40.30 17 51.9 3.503 4.483 174 17.4 23:46 (180, 37)
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It stays observable at 16-17 mag from 2021 to 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 14 2.02 -28 5.6 5.902 5.238 43 17.5 2:53 (292, 18)
Dec. 19 14 6.90 -27 59.2 5.798 5.214 49 17.5 2:54 (289, 23)
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Now it is 17.9 mag (Nov. 19, Giuseppe Pappa). It is expected to brighten up to 12 mag in 2022. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 3 23.56 -50 27.1 6.238 6.520 102 17.6 21:56 ( 0, 75)
Dec. 19 3 16.06 -50 23.0 6.244 6.470 98 17.6 21:21 ( 0, 75)
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Now it is 17.0 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17-18 mag in good condition until winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 7 53.17 20 25.5 1.386 2.256 143 17.7 2:30 (180, 35)
Dec. 19 7 49.10 21 19.3 1.371 2.287 151 17.8 1:59 (180, 34)
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Now it is 17.3 mag (Nov. 9, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and will be fainter than 18 mag in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 22 13.91 -0 51.7 2.297 2.255 75 17.8 20:54 (107, 24)
Dec. 19 22 26.82 -0 40.1 2.390 2.272 71 18.0 20:59 (104, 20)
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Now it is 18.2 mag (Nov. 23, 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 hardly observable for a while. But it becomes observable in good condition after 2023 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Dec. 12 13 17.03 25 20.5 8.613 8.423 75 17.9 2:53 (241, -3)
Dec. 19 13 18.38 25 48.0 8.457 8.372 81 17.9 2:54 (237, 1)
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