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Now it is 11.0 mag (Nov. 1, Seiichi Yoshida). It is expected to brighten up to 8 mag in 2020. It stays observable in good condition for a long time in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower gradually, and it will be unobservable in early December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 5 30.24 38 2.4 1.951 2.782 139 10.7 2:21 (180, 17)
Nov. 16 5 22.59 40 34.7 1.838 2.716 146 10.4 1:46 (180, 15)
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Now it is 11.5 mag (Nov. 1, Seiichi Yoshida). It stays bright as 11 mag until winter. It stays observable in good condition for a long time in the Northern Hemisphere. In the Southern Hemisphere, it locates low, and it will be unobservable in early December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 0 25.60 38 41.3 2.294 3.125 140 11.3 21:12 (180, 16)
Nov. 16 0 11.81 38 58.6 2.355 3.125 134 11.3 20:30 (180, 16)
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It brightened up to 8.3 mag in September (Sept. 20, Maik Meyer). Now it is fading. But it is still bright as 11.1 mag (Nov. 2, Chris Wyatt). In the Southern Hemisphere, it stays observable for a long time after this. In the Northern Hemisphere, it will be unobservable in early December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 21 36.22 -40 46.3 1.452 1.712 86 11.7 20:12 ( 67, 68)
Nov. 16 21 34.36 -42 15.2 1.648 1.764 79 12.2 20:22 ( 65, 61)
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Now it is 11.7 mag (Nov. 4, Sandor Szabo). It will fade out rapidly after this. It is observable in excellent condition in the Northern Hemisphere. It stays locating extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 2 31.98 50 10.4 0.643 1.566 146 12.5 23:18 (180, 5)
Nov. 16 2 27.23 50 5.5 0.678 1.599 146 12.8 22:46 (180, 5)
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Now it is 14.5 mag (Nov. 4, Sandor Szabo).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 0 28.94 14 0.5 4.940 5.778 144 13.2 21:16 (180, 41)
Nov. 16 0 27.17 13 42.7 5.009 5.779 137 13.2 20:47 (180, 41)
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Now it is 13.9 mag (Oct. 26, Toshihiko Ikemura, Hirohisa Sato). It will be fading slowly after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 19 52.09 -15 60.0 1.852 1.794 71 13.9 20:12 ( 98, 39)
Nov. 16 20 10.39 -15 51.2 1.908 1.795 68 14.0 20:22 ( 95, 35)
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Now it is 14.2 mag (Nov. 2, Chris Wyatt). It stays 13-14 mag for a long time in 2019. In the Southern Hemisphere, it is observable in good condition. In the Northern Hemisphere, it is not observasble until summer in 2020.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 19 58.85 -80 38.3 3.367 3.191 71 14.4 20:12 ( 10, 41)
Nov. 16 20 31.61 -77 40.3 3.427 3.212 69 14.5 20:22 ( 13, 42)
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Now it is 16.3 mag (Nov. 2, Toshihiko Ikemura, Hirohisa Sato). It is fainter than this ephemeris recently.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 9 24.70 8 21.2 2.531 2.640 85 14.7 3:15 (233, 30)
Nov. 16 9 29.94 7 39.7 2.469 2.671 90 14.8 3:08 (231, 32)
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Now it is 14.8 mag (Oct. 30, Toshihiko Ikemura, Hirohisa Sato). It stays at 14.5-15 mag until December. It is observable in good condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 20 16.45 -19 30.7 1.764 1.801 75 14.7 20:12 ( 98, 46)
Nov. 16 20 31.43 -17 42.3 1.819 1.794 72 14.7 20:22 ( 97, 40)
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It brightened up to 7.7 mag in June in 2018 (June 19, Juan Jose Gonzalez). Now it is fading. It has already faded down to 15.1 mag (Nov. 6, Toshihiko Ikemura, Hirohisa Sato). In the Southern Hemisphere, it stays observable for a long time until the comet will fade out. In the Northern Hemisphere, it is appearing in the morning sky, but it stays low for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 6 50.72 -34 11.6 4.864 5.197 104 14.8 3:15 (263, 85)
Nov. 16 6 45.66 -34 27.0 4.858 5.254 108 14.8 3:08 (188, 89)
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Now it is 15.3 mag (Nov. 5, Katsumi Yoshimoto). It will brighten very rapidly, and it will brighten up to 14 mag in winter. 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)
Nov. 9 2 15.02 45 6.4 0.781 1.714 150 15.1 23:02 (180, 10)
Nov. 16 2 12.72 43 22.1 0.753 1.688 151 14.9 22:32 (180, 12)
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It has not been observed yet in this apparition. Now it is fainter than 21.5 mag (Aug. 4, Erwin Schwab). It was expected to brighten up to 12 mag from August to September. But actually, it must be much fainter than expected. It is observable in good 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)
Nov. 9 7 36.87 57 57.0 1.069 1.731 114 15.1 3:15 (189, -4)
Nov. 16 7 38.47 59 21.5 1.072 1.777 119 15.6 3:08 (187, -5)
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Now it is 14.6 mag (Oct. 18, Chris Wyatt). In the Southern Hemisphere, it is observable for a long time. It stays low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 22 52.45 -35 30.7 4.275 4.595 102 15.1 20:12 ( 85, 83)
Nov. 16 22 51.76 -34 4.6 4.402 4.625 96 15.2 20:22 ( 89, 75)
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Now it is 15.4 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It brightens rapidly, and it will be observable at 14.5 mag in good condition in winter. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 9 38.27 15 36.6 1.608 1.803 84 15.3 3:15 (231, 22)
Nov. 16 9 54.03 14 49.8 1.550 1.802 87 15.1 3:08 (230, 23)
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Now it is 15.6 mag (Nov. 6, Toshihiko Ikemura, Hirohisa Sato). The orbit is extremely hyperbolic with e=3.35. It is the first interstellar comet in history. It brightens up to 15 mag in December. In the Northern Hemisphere, it stays observable in good condition until early December. Then it will be getting lower, and it will be unobservable in mid January. In the Southern Hemisphere, it will be getting higher gradually. Then it will be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 10 37.32 2 55.0 2.304 2.111 66 15.6 3:15 (251, 20)
Nov. 16 10 49.67 -1 43.8 2.208 2.068 68 15.4 3:08 (254, 24)
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Now it is 14.8 mag (Nov. 4, Sandor Szabo). It stays 15-16 mag until December, and it is observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 23 43.82 -9 22.7 1.689 2.410 126 15.7 20:31 (180, 64)
Nov. 16 23 46.08 -8 55.0 1.745 2.397 119 15.8 20:22 (171, 64)
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Now it is 15.0 mag (July 21, Taras Prystavski). It stays 16 mag for a long time from 2019 to 2020. It stays observable for a long time in the Southern Hemisphere. It is hardly observable in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 12 46.63 -74 1.4 3.833 3.448 60 15.8 3:15 (341, 32)
Nov. 16 13 3.56 -76 30.1 3.820 3.444 60 15.8 3:08 (344, 33)
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Now it is 14.8 mag (Aug. 28, Chris Wyatt). It will be fading slowly after this. In the Southern Hemisphere, it stays observable in good condition for a long time, although it becomes low from October to November. It will never be observable after this in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 14 8.86 -51 19.6 5.018 4.255 35 15.8 3:15 (325, 13)
Nov. 16 14 13.01 -52 31.0 5.048 4.295 36 15.8 3:08 (324, 16)
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Now it is 15.3 mag (Nov. 4, Sandor Szabo). It is observable at 16 mag in good condition from October to November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 3 18.58 4 41.5 1.583 2.557 166 16.1 0:11 (180, 50)
Nov. 16 2 49.95 1 40.0 1.627 2.583 161 16.2 23:07 (180, 53)
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Now it is 16.2 mag (Oct. 4, 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 stays unobservable for a while. 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)
Nov. 9 17 21.88 47 23.9 10.748 10.486 72 16.4 20:12 (131,-25)
Nov. 16 17 25.13 46 56.1 10.717 10.438 71 16.3 20:22 (128,-31)
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Now it is 15.8 mag (Oct. 5, Toshihiko Ikemura, Hirohisa Sato). It stays 15-16 mag for a long time until 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 20 1.24 -24 0.0 5.040 4.818 71 16.3 20:12 ( 90, 45)
Nov. 16 20 1.73 -23 4.2 5.135 4.798 64 16.4 20:22 ( 86, 37)
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It looks cometary on the LCO (CTIO) image on Aug. 21. Now it is 16.2 mag (Oct. 2, ATLAS-MLO, Mauna Loa). It is observable in excellent condition in the Southern Hemisphere. In the Northern Hemisphere, it locates extremely low for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 19 45.76 -37 42.3 6.759 6.430 66 16.4 20:12 ( 70, 46)
Nov. 16 19 45.45 -37 7.8 6.873 6.433 59 16.4 20:22 ( 68, 39)
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Now it is 17.1 mag (Oct. 31, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this, and it will be fainter than 18 mag in late December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 3 29.81 28 19.2 1.320 2.293 165 16.5 0:21 (180, 27)
Nov. 16 3 23.64 27 43.9 1.336 2.318 170 16.7 23:42 (180, 27)
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Now it is 16.7 mag (Oct. 4, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 10.5 mag from 2020 December to 2021 January. In the Northern Hemisphere, it stays observable in good condition while the comet will be brightening gradually, but it is not observable at the high light. In the Southern Hemisphere, it is not observable for a long time, but it will be observable in good condition after the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 16 49.68 64 53.8 4.730 4.737 84 16.6 20:12 (149,-35)
Nov. 16 16 56.85 63 51.8 4.666 4.675 84 16.5 20:22 (147,-38)
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Now it is 17.4 mag (Nov. 3, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 13.5-14 mag from 2020 to 2021. It stays observable in good condition for a long time after this until 2020 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 12 10.91 13 55.6 4.238 3.689 50 16.7 3:15 (257, -5)
Nov. 16 12 18.53 13 24.1 4.140 3.671 55 16.6 3:08 (255, -2)
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Now it is 16.4 mag (Oct. 30, Toshihiko Ikemura, Hirohisa Sato). It stays observable in good condition while the comet will be fading slowly after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 3 22.19 -1 3.6 1.649 2.606 161 16.7 0:13 (180, 56)
Nov. 16 3 18.53 -1 35.0 1.705 2.656 159 16.9 23:37 (180, 57)
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It brighted rapidly from 20.5 mag up to 18.5 mag in September. It was 18.7 mag on Oct. 22 (Geisei Observatory). However, it was not detected, fainter than 19 mag, in late October. It will approaches to Earth down to 0.09 a.u. in early January. It will be obesrvable in excellent condition in the Northern Hemisphere. If it is as bright as in 2003, it will be 17.5 mag at best. But if it shows cometary activity, it may brighten up to 13.5 mag. In the Southern Hemisphere, it will not be observable at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 22 21.99 -23 3.0 0.369 1.130 102 17.1 20:12 (127, 72)
Nov. 16 22 22.16 -21 25.0 0.342 1.082 96 16.7 20:22 (116, 64)
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It stays 16-17 mag for a long time until 2020. It is observable in good condition in the Northern Hemisphere. It is hardly observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 12 58.55 51 47.8 8.818 8.579 72 16.9 3:15 (226,-32)
Nov. 16 13 3.52 51 42.4 8.763 8.586 76 16.9 3:08 (225,-29)
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Now it is 16.7 mag (Aug. 9. Grorudalen Optical Observatory). It passed the perihelion on July 2. Then it must have brightened up to 13 mag, but it was not observable around that time. In the Northern Hemisphere, it stays observable in excellent condition until December when it becomes fainter than 18 mag. In the Southern Hemisphere, it stays locating low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 0 38.32 39 27.3 1.095 1.977 142 16.9 21:24 (180, 16)
Nov. 16 0 27.62 35 56.5 1.178 2.023 137 17.2 20:47 (180, 19)
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Fading. Now it is 17.3 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It stays 17 mag from autumn to winter. It is observable in good 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)
Nov. 9 9 17.62 23 46.0 6.343 6.445 91 16.9 3:15 (221, 18)
Nov. 16 9 15.41 23 42.0 6.261 6.488 98 16.9 3:08 (217, 21)
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Now it is 17.7 mag (Oct. 31, Toshihiko Ikemura, Hirohisa Sato). It will be fading after this. In the Northern Hemisphere, it stays observable in good condition for a long time. In the Southern Hemisphere, it stays extremely low for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 1 50.91 41 49.6 3.394 4.290 151 17.0 22:37 (180, 13)
Nov. 16 1 38.70 39 46.6 3.451 4.330 149 17.1 21:57 (180, 15)
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Fading now. Now it is 17.1 mag (Oct. 5, M. Masek). In the Southern Hemisphere, it stays observable for a long time until it fades out. In the Northern Hemisphere, it will not be observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 6 16.64 -51 14.7 5.095 5.341 99 17.2 3:06 ( 0, 74)
Nov. 16 6 7.77 -52 33.4 5.126 5.393 100 17.3 2:30 ( 0, 72)
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First return of a new periodic comet which brightened up to 18 mag in 2014. Now it is 17.2 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It stays 17 mag until November. It is observable in good condition in the Northern Hemisphere. It locates extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 7 54.26 43 44.8 0.359 1.174 112 17.3 3:15 (196, 9)
Nov. 16 8 5.51 43 52.3 0.374 1.204 116 17.4 3:08 (195, 9)
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Now it is 17.3 mag (Oct. 26, 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 low in December and January. In the Southern Hemisphere, it is not observable until March.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 18 26.16 35 27.5 7.569 7.329 72 17.4 20:12 (127, -9)
Nov. 16 18 28.34 34 32.2 7.589 7.293 69 17.3 20:22 (122,-14)
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Now it is 17.3 mag (Oct. 26, Toshihiko Ikemura, Hirohisa Sato). It will brighten up to 12 mag in winter in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 22 1.38 44 6.7 7.037 7.486 113 17.5 20:12 (165, 9)
Nov. 16 22 1.59 43 32.9 7.051 7.441 109 17.5 20:22 (158, 7)
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It brightened up to 16 mag in September. Now it is fading. Now it is 17.1 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 10 10.29 5 43.9 1.451 1.509 73 17.5 3:15 (244, 23)
Nov. 16 10 22.54 3 43.1 1.444 1.557 77 17.7 3:08 (244, 26)
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Now it is 17.4 mag (Oct. 31, Ken-ichi Kadota). 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)
Nov. 9 3 14.29 0 45.3 4.230 5.187 163 17.5 0:05 (180, 54)
Nov. 16 3 10.56 0 38.2 4.225 5.174 161 17.5 23:29 (180, 54)
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Now it is 17.8 mag (Nov. 2, Toshihiko Ikemura, Hirohisa Sato). It was exptected to brighten up to 16.5 mag from October to December. But actually, it is fainter than originally expected. It seems to brighten up to 18 mag at best. It is observable in good 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)
Nov. 9 8 52.73 23 38.8 1.156 1.611 96 17.9 3:15 (216, 22)
Nov. 16 9 9.50 26 0.1 1.108 1.618 100 17.8 3:08 (214, 20)
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It brightened up to 11 mag in late 2018. Now it is 17.9 mag (Oct. 5, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag in November. It is observable in excellent condition in the Northern Hemisphere. It locates extremely low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 3 6.48 44 20.3 3.393 4.294 152 17.9 23:53 (180, 11)
Nov. 16 2 58.84 43 2.8 3.441 4.357 154 18.0 23:18 (180, 12)
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Now it is 17.9 mag (Oct. 29, Toshihiko Ikemura, Hirohisa Sato). It is observable at 18 mag in good condition in winter. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 4 28.65 24 54.6 2.329 3.261 156 18.0 1:19 (180, 30)
Nov. 16 4 24.45 24 44.1 2.290 3.254 164 17.9 0:48 (180, 30)
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It approached to Earth down to 0.3 a.u. in mid February, and brightened up to 5.5 mag (Feb. 13, Juan Jose Gonzalez). Now it is fading. It has already faded down to 18.4 mag (Nov. 1, Toshihiko Ikemura, Hirohisa Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 1 39.53 37 22.2 2.849 3.762 153 17.9 22:25 (180, 18)
Nov. 16 1 25.92 35 34.7 2.950 3.832 149 18.1 21:44 (180, 19)
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Now it is 17.7 mag (Oct. 31, Toshihiko Ikemura, Hirohisa Sato). It will be fainter than 18 mag soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 22 57.81 -21 14.6 2.278 2.787 110 17.9 20:12 (155, 75)
Nov. 16 22 55.42 -22 57.0 2.446 2.832 102 18.2 20:22 (125, 71)
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Now it is very faint as 19.7 mag (Oct. 25, Toshihiko Ikemura, Hirohisa Sato). It brightened up to 15.5 mag in 1997, and 17 mag in 2008, however, it is much fainter in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Nov. 9 1 8.86 15 21.4 2.423 3.345 154 20.2 21:56 (180, 40)
Nov. 16 1 6.76 14 37.6 2.477 3.351 147 20.2 21:26 (180, 40)
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