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It brightened rapidly. Now it is very bright as 7.2 mag (Jan. 3, Syogo Utsunomiya). It will approach to the sun down to 0.3 a.u. on Jan. 14. It is not observable at all in the Southern Hemisphere. It will be unobservable soon also in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 17 58.82 -8 53.4 1.001 0.382 22 6.8 5:38 (284, 4)
Jan. 14 18 40.90 -19 39.3 1.154 0.319 14 6.4 5:38 (290, -5)
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It brightened very rapidly as predicted. Now it is very bright as 6.3 mag (Jan. 6, Maik Meyer). It will approach to the earth down to 0.08 a.u. to the earth in mid February, and it is expected to be observable at 6 mag in good condition. It will be unobservable temporarily in January. Then it keeps observable in good condition after mid February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 21 9.39 -17 12.5 0.567 0.552 28 6.9 18:33 ( 63, 7)
Jan. 14 21 12.02 -15 9.7 0.431 0.606 22 6.9 18:39 ( 70, 3)
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Now it is 11.3 mag (Jan. 6, Maik Meyer). It is expected to brighten up to 7 mag in 2017 summer. In the Northern Hemisphere, it keeps observable in good condition until the highlight while the comet will be brightening. In the Southern Hemisphere, it will be observable in spring, but it keeps very low for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 14 45.76 44 2.6 2.391 2.587 90 10.7 5:38 (240, 65)
Jan. 14 15 0.19 44 7.0 2.293 2.523 91 10.5 5:38 (238, 67)
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Now it is 13.0 mag (Dec. 29, Chris Wyatt). It is expected to brighten up to 7 mag in 2017 spring. But it locates somewhat low at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 20.60 -20 38.6 2.590 2.156 53 11.9 5:38 (320, 23)
Jan. 14 15 37.57 -21 28.9 2.444 2.072 56 11.6 5:38 (323, 24)
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Already bright as 11.8 mag (Jan. 1, Thomas Lehmann). It will pass the perihelion on Mar. 10, 2017. In the Northern Hemisphere, it keeps observable in the evening sky until late February while the comet will be brightening up to 8.5 mag. In the Southern Hemisphere, it will appear in the morning sky in late March at 8 mag, then it keeps observable while the comet will be fading.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 23 6.93 4 22.2 1.412 1.308 63 13.5 18:33 ( 58, 43)
Jan. 14 23 13.94 4 47.7 1.389 1.204 57 12.5 18:39 ( 65, 39)
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Now it is 15.5 mag (Dec. 6, Kunihiro Shima). It will brighten up to 12 mag from winter to spring. In the Northern Hemisphere, it keeps observable while the comet is brightening gradually. But it will be unobservable in late February. In the Southern Hemisphere, it keeps observable for a long time after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 31.12 -11 38.1 1.684 1.356 53 13.2 5:38 (312, 29)
Jan. 14 15 58.51 -13 40.4 1.607 1.296 53 13.0 5:38 (313, 27)
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It was observed as bright as 12-13 mag from late October to early November. Now it is not observable. It will appear in the morning sky in March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 20 14.95 -21 6.0 6.821 5.875 14 13.9 18:33 ( 68, -5)
Jan. 14 20 20.80 -20 42.6 6.843 5.873 8 13.9 18:39 ( 72,-10)
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Now it is 15.2 mag (Nov. 17, Ken-ichi Kadota). It will brighten up to 14 mag from winter to spring, and it will be observable in excellent condition in the Northern Hemisphere. It keeps low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 11 55.51 26 11.5 1.834 2.433 116 14.2 4:49 ( 0, 81)
Jan. 14 12 0.47 26 51.3 1.777 2.439 121 14.1 4:27 ( 0, 82)
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It brightened very rapidly up to 12 mag in autumn, brighter than originally expected. It will not be observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 19 58.30 -12 5.7 3.037 2.103 15 14.6 18:33 ( 78, -3)
Jan. 14 20 14.36 -11 3.0 3.069 2.121 12 14.9 18:39 ( 81, -6)
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Now it is 14.3 mag (Dec. 31, Jakub Cerny). Distant object, but it keeps observable at 13-14 mag for a long time from 2015 to 2016.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 0 45.99 -4 27.3 5.187 5.148 82 14.7 18:33 ( 21, 49)
Jan. 14 0 49.76 -4 6.3 5.309 5.164 76 14.8 18:39 ( 31, 46)
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It brightened up to 11-12 mag in autumn. Now it is fading. But it is bright as 13.7 mag still now (Dec. 30, Sandor Szabo). It is getting higher gradually after this also in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 13 27.96 -13 35.5 1.892 1.995 81 14.9 5:38 (346, 40)
Jan. 14 13 35.99 -14 28.1 1.856 2.044 86 15.1 5:38 (352, 40)
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Now it is bright as 14.4 mag (Dec. 25, Thomas Lehmann). It will be observable at 11 mag for a long time from 2017 to 2018. Now it is observable in excellent condition in the Southern Hemisphere. But it keeps low for a while in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 2 48.86 -35 44.6 5.231 5.404 94 14.9 19:40 ( 0, 19)
Jan. 14 2 47.37 -34 29.7 5.252 5.351 90 14.9 19:11 ( 0, 21)
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It brightened up to 11-12 mag from summer to autumn. Now it is fading. But it is bright as 12.4 mag still now (Dec. 29, Jakub Cerny).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 12 23.41 -22 55.4 1.724 2.011 91 14.9 5:17 ( 0, 32)
Jan. 14 12 27.60 -24 12.1 1.692 2.060 97 15.1 4:54 ( 0, 31)
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It brightened up to 11 mag from spring to summer. Now it is not observable. It will be observable at 16 mag again in 2017 spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 17 46.85 -21 26.9 3.152 2.251 19 15.1 5:38 (296, -1)
Jan. 14 18 1.62 -21 30.0 3.161 2.292 23 15.2 5:38 (298, 1)
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Now it is 15.4 mag (Dec. 2, Kunihiro Shima). It keeps 15 mag until spring. But it will be getting lower gradually after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 23 24.40 4 59.3 1.916 1.786 67 15.2 18:33 ( 54, 47)
Jan. 14 23 38.70 6 46.9 1.953 1.766 64 15.2 18:39 ( 61, 45)
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Now it is 15.0 mag (Dec. 6, Kunihiro Shima). It will brighten up to 12-13 mag and will be observable in good condition in 2017 summer. In this winter, it is observable until mid January in the Southern Hemisphere, or until the end of February in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 0 15.33 16 23.8 3.583 3.609 83 15.5 18:33 ( 52, 63)
Jan. 14 0 12.13 15 36.1 3.678 3.565 75 15.5 18:39 ( 63, 56)
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It will brighten up to 14 mag from spring to summer in 2017. It locates somewhat low in the Northern Hemisphere. The perihelion distance increased from 2.4 a.u. to 2.9 a.u. in this apparition. So it will not be bright as before.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 21.16 -14 56.8 3.681 3.218 54 15.7 5:38 (316, 28)
Jan. 14 15 29.81 -15 34.4 3.583 3.204 59 15.6 5:38 (321, 30)
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Now it is 15.8 mag (Dec. 3, Kunihiro Shima). It will brighten up to 14 mag from summer to winter in 2017. Then it will be observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is hardly observable around the highlight.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 22 53.54 -4 7.9 4.444 3.987 56 15.7 18:33 ( 54, 35)
Jan. 14 22 56.33 -2 54.3 4.500 3.949 50 15.7 18:39 ( 62, 30)
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Now it is 16.8 mag (Dec. 1, Kunihiro Shima). It will be observable at 16-17 mag in good condition from autumn to winter. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 7 8.03 26 51.4 2.789 3.770 175 15.8 0:03 ( 0, 82)
Jan. 14 7 2.80 27 6.6 2.791 3.762 169 15.7 23:26 ( 0, 82)
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It brightened up to 6 mag from last autumn to last winter. Now it is fading. It has already faded down to 15.2 mag (Nov. 2, Yuji Ohshima). It is observable in good condition in the Northern Hemisphere. It is not observable after this in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 3 6.69 50 59.4 4.826 5.451 125 15.8 19:58 (180, 74)
Jan. 14 3 1.71 49 56.1 4.977 5.518 118 15.9 19:26 (180, 75)
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Now it is 17.6 mag (Dec. 30, Yuji Ohshima). It will approach to the earth down to 0.14 a.u. from March to April. It is expected to brighten up to 5-6 mag. It may brighten furthermore in outburst. In the Northern Hemisphere, it keeps observable in excellent condition. In the Southern Hemisphere, it will not be observable for about one month around the highlight. But it keeps observable in good condition except for that period.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 9 22.39 7 28.2 0.696 1.605 145 16.4 2:17 ( 0, 62)
Jan. 14 9 25.96 7 51.7 0.607 1.545 151 15.8 1:53 ( 0, 63)
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It kept bright 12 mag for a long time from autum in 2015 to summer in 2016. Now it is fading. It is appearing in the morning sky in the Northern Hemispehre. It will be observable in late January also in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 17 1.80 -3 8.0 4.791 4.049 37 15.9 5:38 (288, 19)
Jan. 14 17 6.36 -3 44.9 4.779 4.099 41 16.0 5:38 (292, 23)
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Appearing in the morning sky in the Northern Hemisphere. Now it is fading. But it must be bright as 15 mag still now.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 52.78 -20 29.8 2.868 2.300 46 15.9 5:38 (314, 19)
Jan. 14 16 4.78 -20 43.6 2.870 2.370 50 16.0 5:38 (317, 21)
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Now it is 15.7 mag (Dec. 30, Sandor Szabo). It keeps 16-17 mag for a long time from 2016 to 2019. It keeps locating near by the equator.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 9 20.27 1 53.4 8.854 9.655 142 15.9 2:15 ( 0, 57)
Jan. 14 9 18.99 2 3.9 8.788 9.649 149 15.9 1:46 ( 0, 57)
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Now it is 17.7 mag (Dec. 17, Ken-ichi Kadota). It will brighten up to 10 mag in summer, and it will be 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)
Jan. 7 14 10.00 -5 15.8 2.268 2.220 74 16.5 5:38 (329, 45)
Jan. 14 14 21.87 -6 15.7 2.152 2.182 78 16.3 5:38 (335, 46)
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Now it is 15.2 mag (Dec. 5, Alexander Baransky). It will be observable at 15-16 mag in good condition from autumn to winter. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 4 3.26 32 21.3 2.026 2.828 137 16.4 20:55 ( 0, 87)
Jan. 14 4 3.53 31 57.2 2.114 2.852 130 16.6 20:28 ( 0, 87)
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Now it is 16.5 mag (Dec. 29, Sandor Szabo). It will brighten up to 15 mag and will be observable in good condition from autum to winter in 2017. In the Northern Hemisphere, it keeps observable in good condition for a long time while the comet will be brightening. It is not observable until 2017 summer in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 2 4.09 47 43.0 4.624 5.117 114 16.4 18:56 (180, 77)
Jan. 14 1 59.45 46 3.1 4.695 5.087 108 16.4 18:39 (166, 79)
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Now it is 15.8 mag (Sept. 9, Alexander Baransky). It keeps 16.5 mag from 2016 to 2017. In the Northern Hemisphere, it keeps observable in good condition for a long time, although it becomes low temporarily in December. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 17 55.44 35 56.5 6.663 6.247 61 16.6 5:38 (244, 29)
Jan. 14 18 1.82 36 45.8 6.637 6.249 62 16.6 5:38 (245, 33)
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Now it is 16.7 mag (Nov. 3, iTelescope Observatory, Siding Spring). It keeps 16 mag for a long time from 2017 to 2018.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 9 28.45 -9 40.2 5.109 5.832 133 16.7 2:23 ( 0, 45)
Jan. 14 9 23.02 -8 53.4 5.014 5.811 140 16.6 1:50 ( 0, 46)
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It brightened up to 15 mag in early 2016. Now it is fading. It has already faded down to 16.3 mag (Dec. 30, Sandor Szabo). In the Northern Hemisphere, it keeps observable in good condition for a long time until 2017 autumn when the comet will be fainter than 18 mag. It will never be observable after this in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 17.45 66 43.6 5.968 6.202 99 16.8 5:38 (203, 51)
Jan. 14 15 23.61 67 7.7 5.976 6.230 100 16.8 5:38 (200, 53)
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Now it is 16.9 mag (Nov. 25, Ken-ichi Kadota). It brightened rapidly, and became brighter than originally expected. It keeps 17 mag until 2017. In the Northern Hemisphere, it keeps observable in excellent 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)
Jan. 7 13 44.80 56 43.8 7.035 7.340 104 16.9 5:38 (201, 66)
Jan. 14 13 42.57 57 20.8 6.984 7.346 107 16.9 5:38 (191, 67)
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It is expected to brighten up to 9 mag in summer in 2018. In the Northern Hemisphere, it keeps observable until 2018 summer while the comet will be brightening. In the Southern Hemisphere, it is hardly observable in 2017, but it will be observable in good condition in 2018.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 18 22.10 45 7.1 6.480 6.188 68 17.0 5:38 (232, 28)
Jan. 14 18 28.05 44 57.3 6.426 6.133 68 16.9 5:38 (234, 31)
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Now it is 17.8 mag (Dec. 3, Kunihiro Shima). It was observed at 17 mag last winter. It will be observable at 17 mag again next winter. 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)
Jan. 7 11 26.35 24 1.0 3.342 3.953 122 17.1 4:20 ( 0, 79)
Jan. 14 11 27.30 25 44.8 3.287 3.976 128 17.1 3:54 ( 0, 81)
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It brightened up to 8-9 mag from last winter to spring. Now it is fading. It has already faded down to 16.4 mag (Dec. 2, Ken-ichi Kadota).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 13 15.58 -12 0.2 4.670 4.683 84 17.1 5:38 (350, 42)
Jan. 14 13 15.21 -12 42.5 4.610 4.740 91 17.2 5:38 (359, 42)
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Now it is 17.3 mag (Nov. 7, Mt. Lemmon Survey). It is observable at 17 mag in good condition in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 12 39.20 -1 27.9 2.191 2.510 97 17.1 5:33 ( 0, 53)
Jan. 14 12 43.86 -1 30.6 2.129 2.539 103 17.1 5:10 ( 0, 53)
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Now it is 16.1 mag (Dec. 30, Yuji Ohshima). In the Northern Hemisphere, it will be observable at 17 mag in excellent condition in winter. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 6 59.00 34 60.0 2.454 3.420 167 17.1 23:50 ( 0, 90)
Jan. 14 6 54.36 34 58.8 2.475 3.427 162 17.2 23:18 ( 0, 90)
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It will pass the perihelion in 2019. However, it has not been brightening since the discovery in 2010. Now it is 17.3 mag (Nov. 4, D. Buczynski). It keeps observable in excellent condition in the Northern Hemisphere. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 3 49.38 61 48.2 8.968 9.602 127 17.2 20:41 (180, 63)
Jan. 14 3 46.46 61 37.2 9.008 9.583 123 17.2 20:11 (180, 63)
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It has been lost since its discovery in 1978. In 2016, it is expected to return in excellent condition from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 1 0.95 5 31.9 1.076 1.452 89 17.2 18:33 ( 20, 59)
Jan. 14 1 22.35 8 17.6 1.148 1.490 88 17.6 18:39 ( 27, 61)
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Now it is 17.5 mag (Nov. 20, Michael Jager). In the Northern Hemisphere, it is observable at 17-18 mag until March. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 18 29.64 48 48.4 1.973 1.910 71 17.3 5:38 (228, 28)
Jan. 14 18 31.68 51 2.7 1.938 1.917 74 17.3 5:38 (227, 32)
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It brightened up to 6.2 mag in June (June 24, Marco Goiato). Now it is fading. It has already faded down to 13.3 mag in September (Sept. 28, Chris Wyatt). Now it is appearing in the morning sky. In the Southern Hemisphee, it keeps observable in excellent condition after this. It keeps low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 15 7.13 -32 53.2 4.116 3.634 54 17.3 5:38 (330, 14)
Jan. 14 15 6.50 -33 19.0 4.074 3.706 61 17.4 5:38 (335, 17)
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It will be observable at 17.5 mag in good condition from winter to spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 14 9.12 -7 20.9 2.349 2.284 74 17.4 5:38 (331, 43)
Jan. 14 14 19.38 -8 10.1 2.278 2.295 78 17.4 5:38 (337, 44)
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Now it is 17.3 mag (Nov. 9, L. Elenin). It keeps 17 mag for a long time from 2016 autumn to 2017 summer, and it keeps observable good condition all through that period in the Southern Hemisphere. In the Northern Hemisphere, it will never be observable again after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 1 49.97 -64 30.2 2.584 2.495 73 17.5 18:41 ( 0, -9)
Jan. 14 1 41.43 -64 4.8 2.623 2.479 70 17.5 18:39 ( 4, -9)
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Now it is 17.5 mag (Dec. 24, Ken-ichi Kadota). It will brighten up to 16 mag in 2017 summer, but it is not observable around the high light. It is observable at 17-18 mag until March in the Southern Hemisphere, or until April in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 2 2.66 2 57.4 2.238 2.637 102 17.7 18:55 ( 0, 58)
Jan. 14 2 5.60 3 42.1 2.296 2.601 96 17.7 18:39 ( 4, 59)
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Now it is 17.0 mag (Nov. 10, Purple Mountain Observatory, XuYi Station). It keeps observable at 17.5 mag in good condition from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 3 5.47 14 35.1 2.426 3.056 121 17.9 19:57 ( 0, 70)
Jan. 14 3 7.15 14 40.5 2.512 3.056 114 18.0 19:31 ( 0, 70)
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It is observable at 18 mag in good condition from January to March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Jan. 7 10 53.61 -5 32.6 2.505 3.105 119 17.9 3:48 ( 0, 49)
Jan. 14 10 53.04 -6 20.2 2.442 3.121 125 17.9 3:20 ( 0, 49)
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