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Now it is bright as 8.5 mag (Aug. 20, Carlos Labordena). It is observable at 7.5-8 mag for a long time from 2022 to 2023. In the Northern Hemisphere, it will be unobservable in mid September. Then it is not observable at the high light until 2023 summer. In the Southern Hemisphere, it stays observable for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 15 56.89 -23 31.0 2.160 2.250 81 8.3 19:51 ( 40, 20)
Sept.10 15 55.13 -25 55.8 2.230 2.200 75 8.3 19:40 ( 42, 15)
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It brightened up to 10.4 mag from June to July (July 22, Ken-ichi Kadota). Now it is not observable. In the Souther Hemisphere, it will appear in the morning sky at 12 mag in October. It will never be observable again in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 11 16.56 -13 3.3 2.094 1.220 22 10.4 19:51 ( 90,-25)
Sept.10 11 32.06 -18 11.8 2.129 1.275 23 10.7 19:40 ( 86,-28)
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Now it is 12.2 mag (Aug. 20, Chris Wyatt). It stays 11-12 mag to autumn. It stays observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it becomes extremely low from August to September. Michael Jager detected several fragments at 17.5-19 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 14 15.77 -19 26.0 1.007 0.980 58 11.4 19:51 ( 60, 7)
Sept.10 14 48.56 -23 45.8 0.983 0.997 60 11.4 19:40 ( 54, 7)
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It brightened up to 8.3 mag in winter (Jan. 6, Toshiyuki Takahashi). Appering in the morning sky in the Southern Hemisphere. It will appear in the morning sky in October also in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 9 8.43 -5 49.5 5.006 4.143 28 11.8 4:06 (273, -7)
Sept.10 9 14.74 -7 10.7 4.997 4.175 31 11.8 4:12 (278, -2)
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It brightened up to 9.3 mag in early summer (June 5, Chris Wyatt). Now it is fading. It has already faded down to 12.8 mag (Aug. 20, Chris Wyatt). In the Southen Hemisphere, it stays observable in good condition for a long time, although it becomes temporarily low in August. In the Northern Hemisphere, it is not observable until November when it fades down to 13 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 10 2.22 -39 33.5 2.595 2.068 48 11.8 4:06 (298,-34)
Sept.10 10 5.83 -39 14.2 2.669 2.114 46 12.0 4:12 (300,-28)
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Now it is bright as 12.3 mag (Aug. 21, Osamu Miyazaki). It will approach to Earth down to 0.29 a.u. in 2023 February, and it is expected to brighten up to 5 mag. In the Northern Hemisphere, it stays observable in excellent condition. In the Southern Hemisphere, it becomes unobservable from late September to early February.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 16 22.92 32 21.6 2.191 2.262 80 12.2 19:51 ( 95, 61)
Sept.10 16 13.74 31 12.3 2.215 2.181 74 12.1 19:40 ( 95, 56)
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Bright new comet. Now it is very bright as 12.4 mag (Aug. 31, Michael Mattiazzo). It stays 11-12 mag until November. In the Southern Hemisphere, it stays observable in good condition for a while. In the Northern Hemisphere, it becomes low rapidly.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 19.51 -0 13.9 1.165 1.942 126 12.7 3:33 ( 0, 55)
Sept.10 1 53.89 -7 12.5 1.010 1.894 139 12.2 2:41 ( 0, 48)
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The condition is worst in this apparition. It is not observable at all.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 11 50.24 5 8.1 1.993 1.060 15 12.3 19:51 (101, -7)
Sept.10 12 18.25 2 33.1 1.975 1.051 16 12.2 19:40 ( 97, -6)
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Now it is 12.6 mag (Aug. 18, Ken-ichi Kadota). It is expected to brighten up to 10 mag in 2023. In the Northern Hemisphere, it stays observable in good condition until 2023 autumn, although it becomes very low temporarily in summer. In the Southern Hemipshere, it stays unobservable until 2023 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 10 24.74 52 41.9 4.152 3.514 45 12.5 4:06 (215, 15)
Sept.10 10 29.79 52 53.9 4.043 3.459 48 12.4 4:12 (218, 19)
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Now it is bright as 12.5 mag (Aug. 18, Ken-ichi Kadota). It stays 12 mag for a while. It becomes unobservable from August to November in the Northern Hemisphere, or from September to December in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 13 0.40 -2 56.6 5.090 4.302 34 12.4 19:51 ( 85, 2)
Sept.10 13 7.69 -2 56.9 5.155 4.312 29 12.5 19:40 ( 86, 0)
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Now it is 14.0 mag (Aug. 20, Chris Wyatt). It will brighten up to 12.5 mag in summer. In the Southern Hemisphere, it stays observable in excellent condition for a long time. 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)
Sept. 3 16 43.85 -38 4.1 2.709 2.959 94 12.9 19:51 ( 23, 12)
Sept.10 16 42.16 -35 28.3 2.834 2.957 86 13.0 19:40 ( 28, 13)
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Appearing in the morning sky in the Northern Hemisphere. It will appear in the morning sky in November also in the Southern Hemisphere. It will brighten up to 11.5 mag in winter
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 9 9.39 15 48.1 2.752 1.888 25 13.1 4:06 (255, 6)
Sept.10 9 27.18 14 33.5 2.689 1.854 27 12.9 4:12 (258, 8)
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Now it is 13.4 mag (Aug. 14, Ken-ichi Kadota). 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 stays observable in good condition for a long time, although it becomes unobservable temporarily from November to January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 17 16.71 -0 57.3 3.624 3.888 97 13.3 19:51 ( 33, 49)
Sept.10 17 15.46 -2 48.3 3.695 3.848 91 13.3 19:40 ( 38, 45)
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Now it is 13.6 mag (Aug. 10, Osamu Miyazaki). It stays observable in good condition after this. But it will be fading gradually after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 1 39.22 2 55.8 1.397 2.233 135 13.4 2:53 ( 0, 58)
Sept.10 1 35.76 2 16.1 1.387 2.276 143 13.5 2:22 ( 0, 57)
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Now it is 13.5 mag (Aug. 18, Hiroshi Abe). It is expected to brighten up to 12 mag in 2023. In the Northern Hemisphere, it stays observable in good condition for a long time, although it becomes unobservable temporarily in October. In the Southern Hemisphere, it is not observable until mid December. But it will be observable in good condition in 2023.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 13 25.74 21 36.2 4.785 4.074 40 13.6 19:51 (102, 21)
Sept.10 13 26.90 20 9.9 4.817 4.046 36 13.6 19:40 (103, 17)
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Now it is 13.7 mag (Aug. 19, Ken-ichi Kadota). It stays observable at 13-14 mag for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 18 27.53 -32 3.2 2.481 3.053 115 13.7 19:51 ( 3, 23)
Sept.10 18 30.64 -31 52.2 2.571 3.056 109 13.8 19:40 ( 6, 23)
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Now it is 14.9 mag (Aug. 18. ATLAS-HKO, Haleakala).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 40.82 29 0.1 6.438 6.020 61 13.9 4:06 (260, 42)
Sept.10 6 44.85 28 58.5 6.339 6.022 67 13.9 4:12 (264, 48)
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Now it is 16.8 mag (Aug. 16, ATLAS-MLO, Mauna Loa). It is expected to brighten very rapidly up to 11-12 mag in winter, and it will be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 5 55.89 13 46.5 2.028 1.957 71 14.5 4:06 (286, 44)
Sept.10 6 11.39 13 31.8 1.947 1.937 74 14.2 4:12 (290, 47)
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Now it is 13.8 mag (Aug. 20, Chris Wyatt). It is already unobservable in the Northern Hemisphere. It will be unobservable in late September also in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 12 57.53 -6 39.9 2.964 2.223 35 14.5 19:51 ( 82, 0)
Sept.10 13 11.13 -8 10.3 3.013 2.231 32 14.6 19:40 ( 81, -2)
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Now it is 14.2 mag (Aug. 17, Thomas Lehmann). Now it is fading. It stays 13-14 mag for a while. 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)
Sept. 3 22 37.27 -28 42.9 1.291 2.261 158 14.7 23:47 ( 0, 26)
Sept.10 22 30.77 -28 46.2 1.352 2.301 154 15.0 23:13 ( 0, 26)
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Now it is 16.2 mag (Aug. 25, D. Buczynski). 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 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)
Sept. 3 5 8.44 35 36.1 3.412 3.405 81 15.0 4:06 (259, 62)
Sept.10 5 12.09 34 52.1 3.244 3.347 87 14.8 4:12 (263, 68)
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Now it is 14.5 mag (June 19, ATLAS South Africa). It was expected to brighten up to 13 mag in spring. But actually, it is fainter than originally expected. 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)
Sept. 3 6 44.57 -43 30.6 3.333 3.221 74 15.1 4:06 (322, -5)
Sept.10 6 40.83 -44 44.7 3.289 3.237 78 15.1 4:12 (328, -1)
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It has not been observed yet in this apparition. It will brighten very rapidly, and it is expected to brighten up to 15 mag in September. It is not observable in the Southern Hemisphere. It locates extremely low even in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 8 51.33 17 50.1 1.563 0.852 29 15.2 4:06 (256, 11)
Sept.10 9 24.52 13 55.6 1.597 0.849 27 15.2 4:12 (259, 9)
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Now it is very bright in outburst as 14.8 mag (Aug. 20, Chris Wyatt). It was extremely faint as 20.6 mag on July 29 (Takaaki Oribe). But it suddenly brightened by 5 mag. It stays observable in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 18 25.21 8 28.8 1.558 2.160 112 15.4 19:51 ( 9, 63)
Sept.10 18 28.66 6 42.5 1.577 2.121 108 15.5 19:40 ( 15, 61)
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Now it is 15.7 mag (Aug. 22, F. Kugel, J. Nicolas, J.-G. Bosch). It will brighten rapidly up to 15 mag in September, and it will be observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 1 47.86 3 16.2 0.679 1.556 133 15.5 3:01 ( 0, 59)
Sept.10 1 57.41 -2 55.1 0.653 1.558 138 15.4 2:43 ( 0, 52)
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Appearing in the morning sky. It will brighten up to 14 mag in early 2023, and it will be observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 7 51.56 17 6.7 4.344 3.681 43 15.6 4:06 (264, 22)
Sept.10 8 0.85 17 0.9 4.248 3.656 48 15.6 4:12 (268, 27)
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Now it is 15.5 mag (Aug. 31, Michael Jager). It will brighten up to 15 mag in autumn, and it will be observable in excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 48.59 11 54.4 1.833 2.459 116 15.7 4:02 ( 0, 67)
Sept.10 2 50.76 13 5.7 1.751 2.447 122 15.6 3:36 ( 0, 68)
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Now it is 15.3 mag (Aug. 15, Ken-ichi Kadota). It stays observable in good condition at 15 mag from summer to winter. It locates somwwhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 28.96 19 53.2 2.603 2.333 63 15.7 4:06 (273, 40)
Sept.10 6 41.44 19 50.7 2.533 2.336 67 15.7 4:12 (276, 45)
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It brightened up to 6.7 mag in early May (May 10, Mike Olason). It became brighter than originally predicted by 3 mag. Now it is fading rapidly. The condition is very bad in this apparition. It is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 11 51.94 4 5.1 3.022 2.075 16 15.7 19:51 (100, -8)
Sept.10 12 4.43 2 44.1 3.118 2.151 13 16.0 19:40 (100, -9)
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It brightened up to 9.3 mag from spring to early summer (Mar. 24, Michael Jager). It stayed bright for a while even after the perihelion passaage. But it is fading rapidly now. It has already faded down to 17.1 mag (Aug. 9, iTelescope Observatory, Siding Spring). In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 5 20.36 -64 8.0 2.200 2.473 93 15.7 4:06 (344,-13)
Sept.10 5 28.92 -68 16.8 2.294 2.556 93 16.1 4:12 (349,-16)
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Now it is 16.5 mag (Aug. 17, Thomas Lehmann). 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 is not observable after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 14 22.56 -48 52.2 5.705 5.506 73 15.7 19:51 ( 37,-12)
Sept.10 14 23.55 -48 57.8 5.822 5.528 68 15.8 19:40 ( 39,-14)
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It brightened up to 14.8 mag in August (Aug. 18, Michael Jager). It will be fading after this. In the Northern Hemisphere, it stays observable for a long time, although it becomes extremely low in November. In the Southern Hemisphere, it becomes unobservable in late September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 15 42.74 16 0.7 1.616 1.628 72 15.8 19:51 ( 76, 46)
Sept.10 15 34.09 16 14.8 1.751 1.611 65 15.9 19:40 ( 81, 41)
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Now it is 15.5 mag (Aug. 30, Michael Jager). It is expected to brighten up to 15 mag in autumn, and it will be observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 1 36.25 5 59.2 1.322 2.161 135 16.0 2:49 ( 0, 61)
Sept.10 1 37.69 5 30.9 1.267 2.152 142 15.8 2:23 ( 0, 61)
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Now it is 16.4 mag (Aug. 9, Thomas Lehmann). It will brighten up to 14 mag in 2023. In the Southern Hemisphere, it stays observable in good condition for a long time. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 42.41 -12 38.6 4.423 4.083 64 16.3 4:06 (300, 18)
Sept.10 6 41.65 -13 24.9 4.284 4.045 69 16.2 4:12 (307, 23)
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Now it is 16.8 mag (June 1, ATLAS South Africa). It will brighten up to 13 mag from 2024 to 2025.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 8 35.67 -26 29.4 8.042 7.387 46 16.3 4:06 (294,-12)
Sept.10 8 40.31 -27 2.7 7.976 7.351 48 16.3 4:12 (299, -6)
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It is expected to brighten up to 13-14 mag in July. But actually, it was not detected, fainter than 17 mag (July 10, Martin Masek). In the Southern Hemisphere, it stays observable in good condition after this. In the Northern Hemisphere, it is not observable at all.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 13 16.90 -30 21.8 2.224 1.796 52 16.3 19:51 ( 60,-10)
Sept.10 13 30.48 -28 31.3 2.396 1.867 47 16.6 19:40 ( 62,-10)
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It brightened up to 14 mag in 2021. Now it is fading. It has already faded down to 16.1 mag (Aug. 22, S. Shurpakov). It is observable at 16-17 mag in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 23 52.31 14 55.2 5.141 6.051 152 16.4 1:06 ( 0, 70)
Sept.10 23 48.05 15 6.5 5.144 6.088 157 16.4 0:34 ( 0, 70)
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Now it is 16.1 mag (Aug. 23, ATLAS-MLO, Mauna Loa). It continued brightening even after the perihelion passage. It stays observable at 16-17 mag in good condition for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 23 15.75 -0 53.1 3.265 4.263 170 16.4 0:30 ( 0, 54)
Sept.10 23 12.41 -1 16.4 3.268 4.273 176 16.4 23:54 ( 0, 54)
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Now it is 16.6 mag (Aug. 31, Michael Jager). It stays observable at 16 mag from summer to winter. In the Southern Hemisphere, it locates low until October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 7 25.50 26 47.5 1.993 1.574 51 16.5 4:06 (258, 32)
Sept.10 7 47.13 25 23.6 1.957 1.572 52 16.4 4:12 (261, 34)
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Now it is 15.8 mag (Aug. 19, ATLAS-MLO, Mauna Loa). It brightened up to 14 mag from 2020 to 2021. Now it is fading slowly. It is observable at 16-17 mag in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 0 43.92 -17 58.2 3.003 3.908 149 16.5 1:57 ( 0, 37)
Sept.10 0 40.03 -18 32.8 2.991 3.925 154 16.5 1:26 ( 0, 37)
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Now it is 16.9 mag (Aug. 18, ATLAS-HKO, Haleakala). It will be observable at 16-17 mag in excellent condition from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 4 25.86 8 5.4 3.251 3.471 94 16.6 4:06 (316, 56)
Sept.10 4 30.08 7 30.3 3.155 3.470 99 16.5 4:12 (328, 59)
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Now it is 16.5 mag (Aug. 23, Ken-ichi Kadota). It is expected to brighten up to 8 mag in 2023 July. In 2022, it stays observable in good condition while the comet will be brightening gradually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 3 27.96 4 13.1 3.841 4.275 108 16.7 4:06 (343, 58)
Sept.10 3 23.89 3 15.5 3.661 4.208 116 16.6 4:09 ( 0, 58)
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Now it is 16.7 mag (Aug. 21, Ken-ichi Kadota). It will be observable at 16.5 mag in good condition from summer to autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 3 31.83 26 18.9 1.896 2.340 103 16.7 4:06 (313, 78)
Sept.10 3 36.57 26 47.1 1.839 2.362 108 16.7 4:12 (345, 82)
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Now it is 16.4 mag (Aug. 23, ATLAS-MLO, Mauna Loa). It stayed bright for a while even after the perihelion passage, but it will be fading after this. It will be fainter than 18 mag in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 21 37.33 7 26.3 6.123 7.063 156 16.7 22:47 ( 0, 62)
Sept.10 21 32.98 6 26.0 6.178 7.088 152 16.8 22:15 ( 0, 61)
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Now it is 16.2 mag (Aug. 21, Thomas Lehmann). It stays observable at 16 mag from 2021 to 2022. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 15 33.62 39 57.8 5.636 5.393 71 16.8 19:51 (112, 53)
Sept.10 15 37.60 39 31.9 5.705 5.420 68 16.9 19:40 (112, 50)
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Now it is 16.6 mag (Aug. 22, E. Cortes, B. Lutkenhoner, C. A. Botha). It is expected to brighten up to 7 mag in early 2024. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it stays low in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 10.15 -23 30.6 6.348 6.154 74 16.9 4:06 (314, 15)
Sept.10 6 13.12 -24 23.8 6.216 6.093 78 16.8 4:12 (320, 19)
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It brightened up to 14.2 mag in 2021 summer (July 18, 2021, Taras Prystavski). Now it is fading. It has already faded down to 16.5 mag (Aug. 21, ATLAS South Africa). In the Southern Hemisphere, it stays observable in good condition for a long time. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 14.55 -26 29.4 4.572 5.246 127 16.8 3:28 ( 0, 29)
Sept.10 2 11.11 -26 42.8 4.559 5.288 132 16.9 2:57 ( 0, 28)
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Now it is 16.5 mag (Aug. 26, ATLAS-MLO, Mauna Loa). 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)
Sept. 3 17 13.93 66 29.4 9.385 9.361 85 17.0 19:51 (164, 56)
Sept.10 17 11.29 66 0.7 9.405 9.375 85 17.0 19:40 (161, 55)
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Now it is 16.9 mag (Aug. 31, Michael Jager). It stays observable at 17 mag until winter. In the Southern Hemisphere, it locates extremely low until autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 7 44.64 24 28.3 2.584 2.027 46 17.1 4:06 (258, 27)
Sept.10 8 0.16 23 22.9 2.546 2.043 49 17.1 4:12 (261, 30)
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It brightened up to 3 mag from mid December to late December. Now it is fading. It is observable in good condition in the Southern Hemisphere. No observations have been reported since June.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 15 59.06 -22 29.8 3.766 3.762 82 17.1 19:51 ( 40, 21)
Sept.10 16 0.87 -22 8.3 3.966 3.842 75 17.3 19:40 ( 43, 19)
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Now it is 17.3 mag (Aug. 18, Michael Jager). 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)
Sept. 3 17 19.17 64 31.5 3.854 3.923 86 17.3 19:51 (163, 58)
Sept.10 17 22.45 61 38.1 3.869 3.941 86 17.3 19:40 (158, 60)
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Now it is 17.1 mag (Aug. 16, ATLAS South Africa). It will be fading gradually after this. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 19 17.74 -28 28.3 2.630 3.332 126 17.4 20:28 ( 0, 27)
Sept.10 19 18.53 -28 29.1 2.725 3.345 120 17.5 20:02 ( 0, 27)
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Now it is 17.1 mag (Aug. 11, W. Hasubick). It stays observable at 17-18 mag in 2022. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 26.51 29 35.7 4.957 5.465 115 17.5 3:40 ( 0, 85)
Sept.10 2 19.16 29 23.5 4.857 5.476 123 17.4 3:05 ( 0, 85)
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Now it is 17.4 mag (Aug. 9, Michael Jager). In 2022, it stays observable at 17 mag for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 2.66 27 51.6 0.588 0.975 69 17.4 4:06 (267, 49)
Sept.10 6 29.45 27 13.5 0.628 0.993 70 17.5 4:12 (268, 51)
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It brightened very rapidly up to 15.5 mag from last autumn to last winter (Nov. 2, 2021, Toshihiko Ikemura, Hirohisa Sato). Now it is fading. Appearing in the morning sky.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 6 22.21 15 19.9 4.489 4.165 65 17.5 4:06 (279, 39)
Sept.10 6 27.80 14 56.7 4.410 4.181 70 17.4 4:12 (285, 45)
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It was observed at 17 mag in 2021. It is observable at 17-18 mag also in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 59.29 11 11.1 2.945 3.486 114 17.5 4:06 (356, 66)
Sept.10 2 57.76 11 53.0 2.875 3.507 121 17.5 3:43 ( 0, 67)
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Now it is 16.9 mag (Aug. 23, Thomas Lehmann). It was observed at 15 mag in 2021. Now it is fading. It stays observable at 16-17 mag for a while in 2022.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 17 44.15 29 47.3 5.402 5.638 98 17.5 19:51 ( 70, 77)
Sept.10 17 44.24 29 27.6 5.497 5.665 94 17.6 19:40 ( 75, 74)
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Now it is 17.2 mag (Aug. 15, Ken-ichi Kadota). In the Northern Hemisphere, it stays observable at 17 mag in good condition for a long time until winter. 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)
Sept. 3 6 19.46 44 4.3 2.996 2.781 68 17.5 4:06 (241, 50)
Sept.10 6 34.28 44 36.4 2.933 2.788 71 17.5 4:12 (240, 53)
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Now it is 18.1 mag (Aug. 19, ATLAS-MLO, Mauna Loa). It stays 18 mag for a long time even after the perihelion passage.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 2 34.61 -6 34.7 4.554 5.180 123 17.7 3:48 ( 0, 49)
Sept.10 2 33.50 -6 58.5 4.501 5.205 129 17.7 3:19 ( 0, 48)
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Now it is 17.9 mag (Aug. 21, ATLAS-HKO, Haleakala). It stays observable at 18 mag in good condition from August to September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 23 51.17 -8 55.2 1.339 2.326 164 17.8 1:05 ( 0, 46)
Sept.10 23 47.38 -9 2.1 1.330 2.329 170 17.8 0:34 ( 0, 46)
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Now it is 17.4 mag (Aug. 19, ATLAS-MLO, Mauna Loa). It will be unobservable in September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 13 47.03 -11 46.4 5.340 4.737 48 17.8 19:51 ( 71, 6)
Sept.10 13 52.86 -12 21.2 5.418 4.740 43 17.9 19:40 ( 72, 4)
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It approached to Sun down to 0.14 a.u. on May 15. But it was not observable around that time. In the Northern Hemisphere, it stays observable at 17-18 mag in good condition from July to November. In the Southern Hemisphere, it stays extremely low.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 4 10.59 43 9.1 1.518 1.841 91 17.9 4:06 (236, 73)
Sept.10 4 5.91 44 7.7 1.471 1.896 98 17.9 4:12 (217, 78)
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It brightened up to 17 mag in early 2022. Now it is fading. It will be fainter than 18 mag in autumn. It is not observable in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 7 36.53 -51 2.3 5.991 5.753 71 17.9 4:06 (322,-16)
Sept.10 7 38.70 -52 30.0 5.984 5.772 73 17.9 4:12 (326,-13)
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It brightened up to 18 mag in last winter. Appearing in the morning sky. It stays observable at 18 mag for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 7 48.41 23 16.4 2.845 2.255 45 17.9 4:06 (259, 26)
Sept.10 8 2.31 22 32.5 2.802 2.272 48 17.9 4:12 (262, 30)
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Now it is 17.3 mag (June 27, ATLAS South Africa). Very far object. It stays 18 mag for a long time from 2021 to 2026. In the Southern Hemisphere, it stays observable in good condition for a long time. In the Northern Hemisphere, it is not observable at all.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 8 13.68 -64 50.9 10.740 10.575 77 17.9 4:06 (332,-27)
Sept.10 8 16.16 -65 28.7 10.739 10.567 77 17.9 4:12 (334,-25)
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Now it is 17.5 mag (Aug. 8, ATLAS-MLO, Mauna Loa). It is expected to brighten up to 12 mag in 2024. In the Northern Hemisphere, it stays observable in good condition for a long time until 2023 autumn, although it becomes temporarily low in December. In the Southern Hemisphere, it becomes unobservable in October. But it will be observable in excellent condition at the high light.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 18 8.21 28 51.1 5.601 5.922 103 18.0 19:51 ( 51, 81)
Sept.10 18 4.31 27 43.0 5.626 5.870 99 17.9 19:40 ( 61, 76)
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Now it is 20.0 mg (Aug. 4, J. Maikner). At the discovery, it was expected to be observable at 16-17 mag for a long time from 2020 to 2022. It had been lost for a long time since 2015, but the recent observations are found. Actually, it brigthens up to 20-21 mag at best.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 3 0 50.31 11 8.1 5.429 6.273 143 21.1 2:04 ( 0, 66)
Sept.10 0 48.33 11 2.6 5.388 6.289 151 21.0 1:34 ( 0, 66)
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