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It brightened rapidly. Now it is very bright as 8.7 mag (Oct. 16, Carlos Labordena). It stays observable at 8 mag in excellent condition from October to November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 4 55.81 -24 35.0 0.446 1.275 119 8.3 3:13 (180, 80)
Oct. 24 5 7.19 -19 22.7 0.412 1.268 123 8.1 2:57 (180, 75)
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Now it is very bright as 10.0 mag (Oct. 2, Michael Mattiazzo). Although it is a tiny comet, it will approach to Sun down to 0.34 a.u. on Oct. 20, and brighten up to 8.5 mag. However, it is not observable now. In the Northern Hemisphere, it will appear in the morning sky at 10 mag in late October. Then it stasy 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)
Oct. 17 12 41.74 -9 32.9 0.683 0.355 11 8.7 3:46 (289, -9)
Oct. 24 13 3.77 4 6.2 0.829 0.360 20 9.2 3:36 (278,-18)
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Now it is 9.3 mag (Oct. 11, Marco Goiato). It stays bright as 8-9 mag until early November. It will be observable in excellent condition in the Southern Hemisphere. It locates very low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 49.05 -27 16.4 1.480 1.372 63 8.8 19:44 ( 84, 43)
Oct. 24 18 16.98 -27 17.3 1.516 1.387 63 8.9 19:53 ( 83, 42)
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Now it is very bright as 11.5 mag (Oct. 13, Paul Camilleri). It will approach to Sun down to 0.4 a.u. on Dec. 13, and it is expected to brighten up to 6.5 mag. It stays observable while the comet is brightening until late November when it brightens up to 7-8 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 9 14.40 0 2.4 1.450 1.349 63 12.1 3:46 (249, 27)
Oct. 24 9 45.43 -3 21.4 1.316 1.224 62 11.5 3:36 (254, 27)
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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 14 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 15 22.14 -15 12.5 3.019 2.195 28 11.8 19:44 ( 76, 7)
Oct. 24 15 29.34 -16 16.5 3.179 2.301 23 12.1 19:53 ( 72, 2)
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Now it is 11.2 mag (Sept. 11, Carlos Labordena). Now it is not observable. It will appear in the morning sky at 13.5 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 15 15.74 -11 55.8 3.514 2.660 26 12.2 19:44 ( 78, 4)
Oct. 24 15 25.14 -13 41.1 3.621 2.726 22 12.3 19:53 ( 73, 0)
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Brightened rapidly. Now it is very bright as 12.8 mag (Oct. 6, Taras Prystavski). It is observable at 12-13 mag in excellent condition from October to November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 23 33.97 -25 40.1 0.484 1.384 135 12.9 21:48 (180, 80)
Oct. 24 23 31.59 -20 53.2 0.481 1.364 132 12.5 21:19 (180, 75)
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It brightened up to 13.5 mag in summer (July 31, Ken-ichi Kadota). Now it is not observable. 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)
Oct. 17 13 13.13 2 4.7 2.771 1.807 11 13.0 3:46 (284,-22)
Oct. 24 13 19.74 -1 20.4 2.731 1.779 13 12.9 3:36 (285,-18)
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Now it is 14.1 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 2 42.01 27 25.1 4.913 5.831 154 13.2 1:00 (180, 27)
Oct. 24 2 38.67 27 15.4 4.881 5.832 161 13.2 0:30 (180, 28)
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It brightened up to 11.3 mag in September (Sept. 12, Carlos Labordena). Now it is fading. It has already faded down to 15.4 mag (Oct. 9, Thomas Lehmann). It stays observable in excellent condition in the Northern Hemipshere. It becomes observable in low sky from October to November also in the Southern Hemipshere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 20 3.89 33 51.0 1.061 1.605 102 13.7 19:44 (161, 19)
Oct. 24 19 53.22 26 42.5 1.250 1.664 94 14.2 19:53 (148, 21)
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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 14.5 mag (Oct. 4, Michael Jager). It stays observable in good condition for a long time after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 0.86 23 2.4 2.428 2.135 61 14.2 19:44 (122, 4)
Oct. 24 17 15.81 23 4.5 2.541 2.223 60 14.5 19:53 (119, 0)
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First return of a new periodic comet which brightened up to 13 mag in 2009. Now it is 15.6 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). It is expected to brighten up to 12 mag and to be observable in excellent condition in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 3 57.10 -7 53.0 0.628 1.528 139 14.7 2:15 (180, 63)
Oct. 24 4 3.87 -9 25.8 0.577 1.490 141 14.3 1:54 (180, 64)
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Now it is 15.3 mag (Sept. 12, SONEAR Observatory, Oliveira). 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)
Oct. 17 14 42.81 -8 56.6 3.876 2.947 18 14.4 19:44 ( 76, -4)
Oct. 24 14 53.44 -10 5.4 3.891 2.939 14 14.4 19:53 ( 71, -8)
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Now it is 15.1 mag (Oct. 10, Thomas Lehmann). 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 only visible in the extremely low sky in summer in 2020. 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)
Oct. 17 17 11.39 40 38.7 8.281 8.021 71 14.6 19:44 (136, -6)
Oct. 24 17 14.09 39 49.5 8.266 7.968 69 14.6 19:53 (132,-10)
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Now it is 14.6 mag (Oct. 10, Thomas Lehmann). It will brighten up to 12 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)
Oct. 17 0 14.16 65 36.4 4.706 5.304 122 14.8 22:28 (180,-11)
Oct. 24 0 8.26 65 14.2 4.647 5.262 123 14.7 21:55 (180,-10)
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Now it is 16.1 mag (Sept. 3, Blue Mountains Observatory, Leura). 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)
Oct. 17 14 41.41 -33 32.8 5.068 4.230 29 14.8 19:44 ( 56, 10)
Oct. 24 14 48.70 -34 35.5 5.070 4.198 25 14.8 19:53 ( 51, 6)
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It brightened up to 14.2 mag in August (Aug. 18, Alan Hale). It approached to Sun down to 0.47 a.u. in September, and it was expected to brighten up to 11 mag. But actually, it was fainter than predicted. It is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 12 23.12 -6 19.7 1.801 0.890 16 14.8 3:46 (283, -7)
Oct. 24 12 46.18 -6 50.8 1.916 1.013 17 15.5 3:36 (284, -8)
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Now it is 14.3 mag (Sept. 29, Thomas Lehmann). It stays 14 mag until autumn. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 14 55.07 65 13.8 4.604 4.472 76 14.9 19:44 (149,-35)
Oct. 24 15 5.30 64 2.5 4.635 4.516 76 15.0 19:53 (148,-37)
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Now it is 15.1 mag (Sept. 15, Blue Mountains Observatory, Leura). 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)
Oct. 17 17 56.36 -69 32.6 4.701 4.519 73 15.2 19:44 ( 23, 45)
Oct. 24 18 13.68 -68 26.1 4.745 4.503 69 15.2 19:53 ( 26, 44)
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Now it is 15.4 mag (Sept. 21, Slooh.com Chile Observatory, La Dehesa). It will brighten up to 13.5 mag in spring in 2021. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable until spring in 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 13.76 -50 55.1 4.127 3.764 62 15.3 19:44 ( 50, 42)
Oct. 24 17 14.09 -49 42.6 4.204 3.736 55 15.3 19:53 ( 50, 37)
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Now it is 15.5 mag (Sept. 19, M. Jaeger, E. Prosperi, S. Prosperi). It stays 15.5 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)
Oct. 17 8 10.15 17 53.6 1.986 2.111 82 15.4 3:46 (223, 25)
Oct. 24 8 18.95 17 41.1 1.938 2.145 87 15.4 3:36 (221, 26)
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Now it is 15.3 mag (Sept. 9, M. Jaeger, E. Prosperi, S. Prosperi). 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. In the Southern Hemisphere, it stays locating low for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 29.73 14 8.2 6.138 5.776 64 15.6 19:44 (120, 15)
Oct. 24 17 31.34 12 58.6 6.196 5.750 59 15.6 19:53 (113, 9)
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Now it is 17.2 mag (Aug. 17, P. Camilleri, H. Williams). It brightens up to 15 mag in winter. But it is not observable at high light. In the Southern Hemisphere, it stays observable in good condition until autumn when the comet will brighten up to 16 mag. It stays locating very low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 18 49.16 -29 53.7 2.300 2.292 77 15.9 19:44 ( 87, 56)
Oct. 24 19 0.52 -28 44.5 2.360 2.271 72 15.8 19:53 ( 86, 51)
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Now it is 15.3 mag (Aug. 28, Chris Wyatt). It stays 16 mag until winter. In the Southern Hemisphere, it is observable in excellent condition. It will be getting higher graually after this also in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 21 4.94 -49 29.8 0.878 1.418 98 15.9 19:44 ( 15, 75)
Oct. 24 21 15.92 -44 49.8 0.875 1.387 95 15.9 19:53 ( 41, 77)
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Now it is 16.2 mag (Oct. 11, 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)
Oct. 17 21 26.68 -23 23.4 2.766 3.281 112 15.9 19:44 (177, 78)
Oct. 24 21 21.48 -25 5.4 2.852 3.240 104 15.9 19:53 (133, 76)
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It brightened up to 13.5 mag in winter (Dec. 6, Chris Wyatt). Now it is fading slowly. Now it is 14.6 mag (Sept. 20, Katsumi Yoshimoto). 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)
Oct. 17 2 17.11 -37 32.8 3.757 4.484 131 16.0 0:36 ( 0, 88)
Oct. 24 2 7.37 -36 59.0 3.805 4.523 131 16.0 23:53 ( 0, 88)
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Now it is 15.9 mag (Oct. 10, Thomas Lehmann). 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)
Oct. 17 18 25.05 19 3.5 4.679 4.584 78 16.0 19:44 (133, 20)
Oct. 24 18 25.34 18 58.1 4.780 4.596 73 16.0 19:53 (127, 15)
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Now it is 15.9 mag (Apr. 24, J. Drummond). 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)
Oct. 17 8 22.83 -32 40.9 6.609 6.399 73 16.2 3:46 (279, 54)
Oct. 24 8 25.81 -33 30.5 6.508 6.360 77 16.1 3:36 (279, 57)
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It brightened up to 13.8 mag in autumn in 2019 (Sept. 3, Chris Wyatt). Now it is fading slowly. Now it is 15.7 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). In 2020, it stays observable in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 23 56.29 1 56.2 5.528 6.451 156 16.2 22:11 (180, 53)
Oct. 24 23 52.90 2 0.9 5.626 6.493 148 16.2 21:40 (180, 53)
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It was expected to brighten very rapidly, and brighten up to 14.5 mag from August to September. However, its current brightness is very uncertain. It could not be detected as fainter than 18.0 mag on June 30 (Charles S. Morris), and fainter than 15.7 mag on July 13 (Sandor Szabo). However, Giuseppe Pappa reported as 14 mag on July 10, and Thomas Lehmann reported it is bright as 15.2 mag on July 12. In the Northern Hemisphere, it stays observable for a long time. In the Southern Hemisphere, it is not observable until late October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 10 50.69 9 19.7 1.781 1.258 43 16.3 3:46 (257, 2)
Oct. 24 10 50.47 4 55.2 1.765 1.337 48 16.5 3:36 (258, 8)
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Now it is 18.6 mag (Aug. 6, Palomar Mountain--ZTF). 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. It is observable until November when it brightens up to 16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 8 54.40 21 39.0 1.000 1.200 73 16.6 3:46 (229, 15)
Oct. 24 9 29.97 17 56.4 0.867 1.095 71 16.3 3:36 (235, 15)
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Now it is 15.9 mag (Sept. 16, J. Drummond). It is observable at 15-16 mag in 2020. It is observable in excellent 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)
Oct. 17 17 59.14 -24 13.4 7.309 6.964 66 16.4 19:44 ( 89, 44)
Oct. 24 17 59.51 -23 55.3 7.440 6.982 59 16.4 19:53 ( 84, 36)
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It will brighten very rapidly, and will brighten up to 11 mag from December to January. It stays observable for a long time. In the Southern Hemipshere, it locates low until the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 50.30 -10 25.0 1.270 1.231 64 17.0 19:44 (103, 35)
Oct. 24 18 5.41 -10 35.2 1.237 1.159 61 16.5 19:53 ( 99, 31)
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Now it is 17.0 mag (Oct. 10, Thomas Lehmann). 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)
Oct. 17 22 30.75 68 44.1 5.550 6.024 113 16.5 20:44 (180,-14)
Oct. 24 22 21.28 67 1.0 5.534 6.016 114 16.5 20:08 (180,-12)
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Now it is 17.3 mag (Oct. 10, 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 2021 spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 23 46.67 50 28.8 1.631 2.429 133 16.9 22:01 (180, 4)
Oct. 24 23 38.31 49 47.1 1.564 2.355 132 16.7 21:25 (180, 5)
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It brightened up to 14.6 mag in summer (July 18, Thomas Lehmann). Now it is 17.0 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). It stays observable until December when it becomes fainter than 18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 20 10.25 -13 25.9 1.790 2.166 97 16.8 19:44 (136, 62)
Oct. 24 20 21.59 -13 37.9 1.883 2.185 93 17.0 19:53 (126, 58)
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Now it is 17.0 mag (Oct. 10, Thomas Lehmann). 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)
Oct. 17 20 43.37 2 54.2 1.619 2.161 109 16.9 19:44 (162, 51)
Oct. 24 20 52.56 1 51.1 1.692 2.168 104 17.0 19:53 (152, 49)
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First return of a new periodic comet which brightened up to 17.5 mag in 2012. Now it is 17.5 mag (Aug. 15, Toshihiko Ikemura, Hirohisa Sato). It stays observable at 17 mag in good condition from summer to winter. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 5 19.41 35 16.7 1.759 2.432 121 17.0 3:37 (180, 20)
Oct. 24 5 19.98 36 4.2 1.710 2.450 127 17.0 3:10 (180, 19)
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Now it is 15.0-15.5 mag (Sept. 19, Michael Jager). It will be fading after this, and will be fainter than 18 mag in November. 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)
Oct. 17 8 40.45 19 42.0 1.340 1.471 76 17.0 3:46 (228, 19)
Oct. 24 8 55.25 18 59.6 1.327 1.512 79 17.3 3:36 (228, 20)
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Now it is 16.6 mag (Sept. 19, D. Buczynski). It is observable at 16.5-17 mag from spring in 2020 to summer in 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 17 16.38 1 0.1 5.089 4.634 57 17.0 19:44 (107, 21)
Oct. 24 17 17.29 -0 6.7 5.184 4.633 51 17.1 19:53 (100, 15)
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Now it is 16.6 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). It stays at 17 mag from 2020 to 2021.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 18 55.53 30 9.8 8.842 8.858 87 17.1 19:44 (146, 15)
Oct. 24 18 55.97 29 55.7 8.911 8.854 83 17.1 19:53 (139, 11)
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Now it is 16.7 mag (Oct. 8, Michael Jager). It will approach to Earth down to 0.5 a.u. in November, and brighten up to 17 mag. It is observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 23 34.54 27 48.1 0.516 1.458 147 17.2 21:49 (180, 27)
Oct. 24 23 40.01 25 26.8 0.502 1.436 145 17.1 21:28 (180, 30)
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Now it is 17.9 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). It will approach to Earth down to 0.46 a.u. in 2021 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)
Oct. 17 0 43.62 -17 6.2 1.380 2.305 151 17.3 22:55 (180, 72)
Oct. 24 0 10.39 -19 26.8 1.369 2.222 139 17.1 21:55 (180, 74)
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Now it is 17.5 mag (Aug. 15, Toshihiko Ikemura, Hirohisa Sato). Main-belt asteroid. But it showed a straight tail like a comet in 2019. In 2020, it brightens up to 16.5 mag and stays observable in good condition from September to October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 0 4.67 -4 10.8 1.380 2.323 155 17.2 22:19 (180, 59)
Oct. 24 0 1.39 -5 39.4 1.441 2.338 146 17.4 21:48 (180, 61)
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Recovered from SWAN images after 24-year blank. It brightened up to 10.2 mag in spring (May 31, Marco Goiato). Now it is fading very rapidly. It has already faded down to 18.3 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 7 21.94 7 0.7 1.802 2.099 92 17.3 3:46 (218, 40)
Oct. 24 7 26.31 6 20.9 1.772 2.152 98 17.7 3:36 (215, 42)
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Now it is 17.6 mag (Sept. 20, A. Diepvens). 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)
Oct. 17 6 2.44 16 31.8 4.091 4.574 113 17.5 3:46 (190, 38)
Oct. 24 6 2.63 16 35.6 3.986 4.563 119 17.4 3:36 (185, 38)
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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 18.7 mag (Sept. 20, ATLAS-MLO, Mauna Loa). In the Southern Hemisphere, it stays observable for a long time. It will be observable in good condition after this also in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 6 38.34 -12 22.7 7.613 7.848 99 17.6 3:46 (219, 62)
Oct. 24 6 36.88 -12 36.5 7.569 7.899 105 17.6 3:36 (210, 65)
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First return of a new periodic comet which brightened up to 17 mag in 2013. 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)
Oct. 17 6 23.80 36 59.2 0.760 1.431 108 18.0 3:46 (191, 17)
Oct. 24 6 56.76 38 21.4 0.690 1.379 108 17.6 3:36 (194, 15)
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Now it is 17.9 mag (Sept. 23, ATLAS-MLO, Mauna Loa). It stays 17.5 mag until November. It is observable in excellent condition in the Southern Hemisphere. It locates very low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 23 2.39 -36 21.6 2.483 3.138 122 17.6 21:17 ( 0, 89)
Oct. 24 23 1.95 -36 16.1 2.559 3.140 117 17.7 20:49 ( 0, 89)
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It brightened up to 13.2 mag from spring to autumn in 2019 (June 30, Thomas Lehmann). Now it is fading slowly. It has already faded down to 16.9 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). In the Southern Hemisphere, it stays observable for a long time. In the Northern Hemisphere, it stays low for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 22 20.53 -26 54.5 4.270 4.871 121 17.7 20:35 (180, 82)
Oct. 24 22 16.76 -26 3.5 4.409 4.912 114 17.8 20:04 (180, 81)
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It stays observable at 17 mag for a long time until 2027. In the Southern Hemipshere, it stays observable in good condition for a long time. It is not observable in the Northern Hemipsphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 10 5.23 -47 44.9 12.411 11.904 57 17.7 3:46 (307, 38)
Oct. 24 10 6.40 -48 24.4 12.358 11.886 59 17.7 3:36 (307, 41)
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Now it is 17.2 mag (Sept. 12, D. Buczynski). 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)
Oct. 17 19 37.55 50 32.3 3.940 4.206 98 17.8 19:44 (163, 1)
Oct. 24 19 32.41 49 23.1 3.950 4.162 95 17.8 19:53 (156, -1)
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Now it is 17.4 mag (Sept. 5, ATLAS-MLO, Mauna Loa). It stays observable at 17.5-18 mag in good condition until winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 7 27.42 17 5.0 1.732 2.041 92 17.8 3:46 (213, 31)
Oct. 24 7 35.91 17 10.2 1.679 2.065 97 17.8 3:36 (211, 32)
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Now it is 17.2 mag (Oct. 12, Toshihiko Ikemura, Hirohisa Sato). It was observed at 17 mag in 2019. In 2020, it is observable at 17.5 mag in good condition from summer to autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 0 32.18 -7 53.2 2.858 3.800 157 17.8 22:46 (180, 63)
Oct. 24 0 28.34 -7 57.0 2.907 3.807 150 17.8 22:15 (180, 63)
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Now it is 18.9 mag (Sept. 20, A. Diepvens). It will brighten up to 17 mag in December. It is 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)
Oct. 17 2 31.25 43 12.8 1.123 2.013 143 18.0 0:50 (180, 12)
Oct. 24 2 28.29 42 59.6 1.080 1.994 147 17.8 0:19 (180, 12)
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Now it is 17.9 mag (Sept. 20, E. Meza). 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)
Oct. 17 4 21.52 -45 35.4 6.470 6.918 112 18.0 2:39 ( 0, 79)
Oct. 24 4 16.02 -46 38.9 6.409 6.868 113 17.9 2:06 ( 0, 78)
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Now it is 16.5 mag (Sept. 16, J. Drummond). In the Southern Hemisphere, it stays observable at 18 mg until winter. It is not observable in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 19 17.12 -86 15.9 4.412 4.362 80 17.9 19:44 ( 3, 38)
Oct. 24 19 2.79 -85 45.4 4.470 4.362 77 17.9 19:53 ( 4, 38)
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New comet discovered in the images of SOHO spacecraft. It approached to Sun down to 0.09 a.u. on Aug. 8, and it brightened up to 3 mag. It will appear in the morning sky in October. But it must be fainter than 18 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Oct. 17 11 3.21 -3 30.9 2.487 1.786 36 18.5 3:46 (269, 7)
Oct. 24 11 9.34 -4 21.2 2.537 1.910 41 18.8 3:36 (268, 10)
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