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Now it is 7.2 mag (Aug. 19, Stuart Rae). It keeps so bright as 6-8 mag for a long time from 2011 to 2012, and will be observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable in good condition until October when it brightens up to 6.5 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 20 23.00 17 42.7 1.393 2.278 142 7.2 22:27 ( 0, 73)
Aug. 27 19 53.75 18 56.4 1.395 2.215 133 7.0 21:30 ( 0, 74)
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Now it is very bright as 8.1 mag (Aug. 19, Michael Mattiazzo). It will approach to the sun down to 0.5 A.U. in September, and it is expected to brighten up to 6 mag. In the Southern Hemisphere, it keeps observable until early September when it becomes 7 mag. In the Northern Hemisphere, it is not observable for a while. But after appearing in the morning sky in October, it becomes observable in the excellent condition at midnight.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 12 5.83 -1 47.6 1.215 0.707 35 8.9 20:14 ( 88, -1)
Aug. 27 12 22.72 -3 30.3 1.071 0.600 33 7.9 20:03 ( 87, -2)
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Now it is very bright as 8.0 mag (Aug. 14, Willian Souza). Now it is passing very near by the earth, within 0.1 A.U., and moving very fast in the southern sky. Now it is not observable in the Northern Hemisphere. It will appear in the morning sky at 7 mag in mid September, then it keeps observable while fading gradually. In the Southern Hemisphere, it is observable in good condition for several days after this. But after that, it is not observable until winter when it becomes fainter than 16 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 8 51.77 -26 2.0 0.089 0.947 41 8.4 3:52 (285,-28)
Aug. 27 9 20.70 -4 17.1 0.178 0.847 20 8.8 3:59 (265,-16)
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It has returned after 27-year blank since 1984. It brightened very rapidly, and became very bright as 9.1 mag (July 10, Tsutomu Seki). However, it is not observable now. It will never be observable again in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 8 50.86 7 11.6 1.723 0.808 16 11.3 3:52 (254, -9)
Aug. 27 9 21.62 2 41.4 1.785 0.866 16 12.0 3:59 (258,-11)
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It will approach to the sun down to 0.9 A.U. in early September. Extremely diffuse. It is faint as 14.1 mag by CCD observations (Aug. 2, Hidetaka Sato). The central part is extremely faint as 18 mag. However, it was reported so bright as 10.7 mag visually (Aug. 4, Juan Jose Gonzalez). In the Northern Hemisphere, it keeps observable until winter, although it becomes very low from mid August to late September. In the Southern Hemisphere, it is not observable until November. It will keep 12 mag until autumn in calculation. However, it may be disintegrated in the near future.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 9 55.18 56 11.6 1.390 0.957 43 12.4 20:14 (151, 13)
Aug. 27 10 20.83 49 1.9 1.457 0.920 38 12.4 20:03 (145, 9)
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Now it is bright as 10.0 mag (Aug. 8, Juan Jose Gonzalez). It will brighten up to 10-11 mag in autumn. In the Northern Hemisphere, it keeps observable for a long time until 2012 spring, although it became low temporarily in July. In the Southern Hemisphere, it is not observable until November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 7 58.34 57 29.3 2.481 1.987 49 12.8 3:52 (217, 27)
Aug. 27 7 59.11 56 14.8 2.409 1.982 53 12.7 3:59 (220, 31)
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First return of a new periodic comet which brightened up to 13 mag in a major outburst in 2005. Now it is very bright as 11.8 mag (Aug. 8, Juan Jose Gonzalez). It will be observable in an excellent condition from summer to winter. The fragment B is also observed at 19-20 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 23 11.55 3 52.4 1.215 2.174 154 13.0 1:21 ( 0, 59)
Aug. 27 23 6.42 4 14.7 1.203 2.185 161 13.1 0:49 ( 0, 59)
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It brightened up to 15.0 mag on July 10 (Ken-ichi Kadota). Now it is not observable. The condition of this apparition is bad. In the Northern Hemisphere, it is only observable from December to February in the evening very low sky after the perihelion passage. In the Southern Hemisphere, it keeps observable for a long time, although it keeps locating extremely low. The component B was not detected, fainter than 20 mag, on May 14 (Hidetaka Sato).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 12 0.09 5 41.8 1.992 1.249 31 13.3 20:14 ( 95, 2)
Aug. 27 12 19.52 2 53.9 1.946 1.190 30 13.1 20:03 ( 93, 1)
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Already bright and visible visually at 13.9 mag (Aug. 7, Alan Hale). It will be observable in good condition at 12 mag in autumn and winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 0 2.24 7 40.5 1.439 2.324 142 13.6 2:12 ( 0, 63)
Aug. 27 0 1.20 7 30.8 1.371 2.298 149 13.4 1:43 ( 0, 63)
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Now it is bright and visible visually at 13.1 mag (June 6, Chris Wyatt). It keeps bright as 13-14 mag for a long time after this until 2013. It is not observable in the Northern Hemisphere, but it is observable in good condition in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 11 11.47 -74 28.3 5.486 5.543 87 13.5 20:14 ( 19,-37)
Aug. 27 11 17.69 -74 30.8 5.525 5.534 85 13.5 20:03 ( 19,-38)
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It is not observable at all due to the bad condition in this apparition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 10 26.70 15 29.3 2.489 1.495 8 13.7 20:14 (117,-10)
Aug. 27 10 47.94 13 38.2 2.522 1.525 7 14.0 20:03 (115,-11)
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It was very bright and visible visually as 12.4 mag in July and early August (Aug. 2, Jakub Koukal). Now it is fading rapidly. In the Northern Hemisphere, it keeps observable at 14-15 mag in good condition until autumn. It locates low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 18 41.29 32 28.9 1.263 1.927 115 13.9 20:46 ( 0, 88)
Aug. 27 18 19.69 33 29.3 1.367 1.935 107 14.0 20:03 ( 40, 88)
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Now it is 13.2 mag and visible visually (July 5, Jakub Koukal). It will be observable at 13-14 mag for a long time from 2011 to 2012.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 18 27.40 -8 27.6 4.751 5.444 128 13.9 20:33 ( 0, 47)
Aug. 27 18 20.64 -8 55.9 4.838 5.427 120 13.9 20:03 ( 1, 46)
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It is already unobservable in the Northern Hemisphere. It will be unobservable soon also in the Southern Hemisphere. No observations have been reported since July.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 11 22.12 -2 6.1 7.152 6.260 26 14.2 20:14 ( 95,-10)
Aug. 27 11 26.71 -2 36.4 7.194 6.260 20 14.3 20:03 ( 96,-13)
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Big asteroid discovered in 1906. It suddenly showed the cometary activity on Dec. 11, probably due to an impact of a small object. It was very bright as 11.5 mag visually (Dec. 17, Juan Jose Gonzalez). It had a dust coma still on Jan. 9 (Joseph Brimacombe). Then it turned to be stellar at 13.8 mag (Apr. 5, Juan Jose Gonzalez). Now it is not observable.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 11 32.99 14 27.2 3.595 2.701 23 14.4 20:14 (106, 1)
Aug. 27 11 43.83 13 5.9 3.613 2.690 20 14.4 20:03 (106, -1)
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It brightened rapidly. Now it is bright and visible visually at 14.2 mag (Aug. 7, Alan Hale). It will be observable at 15 mag in good condition from July to October. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 20 16.58 -25 43.4 1.368 2.318 153 14.9 22:22 ( 0, 29)
Aug. 27 20 14.32 -26 33.1 1.404 2.312 146 14.9 21:53 ( 0, 28)
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Now it is 13.8 mag and visible visually (Aug. 2, Jakub Cerny). It keeps 14-15 mag from 2011 summer to 2012 summer. But it is not observable around the perihelion. It is observable in good condition in the Northern Hemisphere in 2011, and in the Southern Hemisphere in 2012. Juan Jose Gonzalez reported that it is very bright as 10.8 mag visually with a large coma of 5 arcmin (Aug. 3).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 14 4.07 11 32.1 3.030 2.686 60 15.2 20:14 ( 82, 30)
Aug. 27 14 13.67 9 53.5 3.056 2.649 57 15.2 20:03 ( 82, 28)
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Brightening rapidly. Now it is 15.0 mag (July 18, Hidetaka Sato). It was reported very bright visually, as 13.4 mag (Aug. 1, Jakub Cerny). It is expected to be 13 mag and will be observable in good condition in 2013. In the Northern Hemisphere, it keeps observable for a long time after this. It is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 1 42.24 64 18.3 7.277 7.380 91 15.3 3:52 (180, 61)
Aug. 27 1 33.73 64 53.4 7.167 7.352 96 15.3 3:16 (180, 60)
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Now it is fading slowly, but still bright and visible visually as 13.6 mag (Aug. 9, Seiichi Yoshida). It will keep 14-15 mag until mid September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 23 12.68 -13 34.6 2.330 3.304 161 15.3 1:23 ( 0, 42)
Aug. 27 23 2.45 -16 43.9 2.354 3.349 167 15.4 0:45 ( 0, 38)
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It was expected to keep 14-15 mag for a long time from 2011 summer to 2012 summer. However, it is lost. It was observed only during two days in 2010 June. So the orbital elements are extremely uncertain. The condition is good in the Southern Hemisphere. But in the Northern Hemisphere, it is not observable until 2012 August.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 15 43.97 -51 44.1 2.665 2.983 98 15.4 20:14 ( 21, -2)
Aug. 27 15 39.83 -52 8.5 2.722 2.936 91 15.4 20:03 ( 24, -4)
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It brightened up to 17.1 mag in late June (June 24, J. F. Hernandez). Recent brightness has not been reported. It will brighten up to 13 mag in next winter. But the condition of this apparition is bad, and it will not be observable around the perihelion passage. It will be unobservable soon in the Northern Hemisphere. It will be observable until September when it brightens up to 15 mag in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 12 28.53 1 12.0 2.580 1.915 39 15.6 20:14 ( 88, 5)
Aug. 27 12 42.15 -0 40.3 2.589 1.881 36 15.4 20:03 ( 87, 3)
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Appearing in the morning sky, it was revealed to be a comet. Now it is very bright as 14.7 mag (Aug. 1, G. V. Borisov, V. Rumyantsev). It has already passed the perihelion in April, and it will be fading rapidly after this. It will be getting higher in the morning sky gradually, but it will be fainter than 18 mag in October. it is not observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 7 53.86 48 0.3 2.835 2.212 43 15.6 3:52 (227, 24)
Aug. 27 8 16.00 48 13.9 2.836 2.255 46 15.9 3:59 (228, 26)
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Now it is bright and visible visually at 14.0 mag (Aug. 1, Juan Jose Gonzalez). Brighter than originally predicted. It will be observable at 14-15 mag in good condition from summer to autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 23 17.82 -17 56.1 1.164 2.140 159 15.6 1:27 ( 0, 37)
Aug. 27 23 14.26 -18 40.5 1.160 2.151 164 15.6 0:56 ( 0, 36)
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It has brightened in outburst up to 14 mag in 2006 January. Another outburst occured in late May, and brightened up to 14.3 mag (June 4, Juan Jose Gonzalez). It was bright as 14.5 mag still on June 27 (Jakub Koukal). Recent brightness has not been reported. It will be getting lower in the evening sky after this, and will be unobservable in October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 16 2.67 -16 20.2 8.145 8.301 95 15.9 20:14 ( 35, 31)
Aug. 27 16 3.67 -16 26.4 8.240 8.282 88 16.0 20:03 ( 39, 29)
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It is expected to be bright as 9 mag from 2012 to 2013. Now it is 16.5 mag (Aug. 11, V. Gerke, A. Novichonok). In the Northern Hemisphere, although it becomes low temporarily in 2011 autumn, it keeps observable in good condition for a long time until 2012 autumn when the comet brightens up to 10 mag. In the Southern Hemisphere, it is hardly observble before the perihelion passage. But it becomes observable in good condition since 2013 after the perihelion passage.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 12 18.99 52 12.3 6.339 5.725 48 16.1 20:14 (136, 29)
Aug. 27 12 26.06 51 18.4 6.288 5.666 48 16.0 20:03 (135, 27)
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Now it is 16.7 mag (Aug. 4, C. Rinner, F. Kugel). It will be fading very slowly after this. In the Northern Hemisphere, it keeps observable for a long time until 2012 spring when it fades down to 17-18 mag. It will not be observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 22 46.70 52 59.0 4.721 5.206 113 16.0 0:56 (180, 72)
Aug. 27 22 43.29 52 39.5 4.699 5.234 116 16.0 0:25 (180, 72)
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It reached up to 14 mag in 2010 autumn and winter. Now it is fading. In the Southern Hemisphere, it keeps observable in good condition while fading gradually. In the Northern Hemisphere, it will never be observable again. No observations have been reported since May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 6 19.69 -45 7.2 3.623 3.509 75 16.1 3:52 (318,-12)
Aug. 27 6 24.49 -47 58.1 3.613 3.545 78 16.1 3:59 (323, -9)
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It became bright as 12 mag in 2010. Now it is fading. It has already faded down to 16.8 mag (Aug. 2, J.F. Soulier and A. Novichonok).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 2 21.06 4 28.9 3.211 3.707 111 16.2 3:52 (342, 58)
Aug. 27 2 21.14 4 20.9 3.138 3.726 118 16.1 3:59 (358, 59)
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Brightening rapidly. Now it is 16.2 mag (Aug. 4, C. Rinner, F. Kugel). It will be obserbale at 14 mag in good condition in autumn. It locates somewhat low in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 5 48.84 8 1.5 1.797 1.570 60 16.3 3:52 (280, 28)
Aug. 27 6 10.61 8 19.4 1.737 1.540 61 16.2 3:59 (282, 31)
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Now it is 16.4 mag (Aug. 2, C. Rinner, F. Kugel). It is visible visually at 15.1 mag (Aug. 2, Jakub Cerny). It will brighten up to 16 mag from summer to autumn, and will be observable in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 16 33.99 -7 4.3 1.631 2.077 101 16.3 20:14 ( 32, 42)
Aug. 27 16 42.73 -8 6.7 1.686 2.066 96 16.4 20:03 ( 34, 41)
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Now it is 16.6 mag (July 22, Hidetaka Sato). In the Southern Hemisphere, it keeps observable at 16-17 mag for a long time from summer to winter. It is not observable in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 17 13.86 -80 57.3 1.634 2.141 105 16.4 20:14 ( 3,-26)
Aug. 27 15 38.07 -79 6.6 1.711 2.107 98 16.4 20:03 ( 8,-27)
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Now it is 16.5 mag (Aug. 1, Hidetaka Sato). In the Southern Hemisphere, it keeps observable at 16-17 mag for a long time from 2011 to 2013. In the Northern Hemisphere, it is only observable until October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 17 9.68 -19 22.2 4.523 4.985 111 16.8 20:14 ( 16, 34)
Aug. 27 17 7.94 -20 14.4 4.599 4.950 104 16.8 20:03 ( 21, 32)
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Now it is 14.7 mag (Aug. 1, J.F. Soulier and A. Novichonok). It is fading now, but it was reported much brighter than this ephemeris.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 0 24.15 -15 19.2 1.586 2.475 143 16.8 2:34 ( 0, 40)
Aug. 27 0 18.84 -16 7.8 1.586 2.516 150 17.0 2:01 ( 0, 39)
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Now it is 17.5 mag (July 26, C. Rinner, F. Kugel). It keeps observable at 17 mag for a long time from 2011 to 2012.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 0 43.64 18 57.8 7.371 8.030 127 16.9 2:53 ( 0, 74)
Aug. 27 0 38.94 18 45.9 7.284 8.033 135 16.9 2:21 ( 0, 74)
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It reached up to 7.7 mag in 2009 summer (2009 Aug. 13, Chris Wyatt). Now it is fading. It has already faded down to 15.3 mag (June 29, Hidetaka Sato). It will never be observable again in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable in good condition until autumn when it becomes fainter than 18 mag. No observations have been reported since July.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 15 19.72 -60 34.0 7.218 7.406 96 17.0 20:14 ( 20,-12)
Aug. 27 15 18.68 -60 3.4 7.361 7.454 91 17.1 20:03 ( 22,-12)
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Now it is 16.5 mag (July 2, J. F. Hernandez). It was observed around 16 mag in 2009 and 2010. In 2011, it keeps observable at 17 mag from spring to autumn. It locates somewhat low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 16 52.85 -23 56.3 3.802 4.229 108 17.4 20:14 ( 19, 28)
Aug. 27 16 54.63 -24 2.6 3.913 4.237 101 17.5 20:03 ( 23, 27)
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It approached to the sun down to 0.88 A.U. in mid April, and it brightened up to 8.6 mag (Apr. 13, Juan Jose Gonzalez). Now it is fading. It has already faded down to 16.1 mag by CCD observations (July 29, Hidetaka Sato). However, it is still very bright visually as 12.7 mag (Aug. 7, Jakub Koukal). It will get diffuse and fade out rapidly after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 2 51.85 14 19.0 1.746 2.188 101 17.5 3:52 (319, 64)
Aug. 27 2 51.60 13 28.9 1.741 2.276 108 17.8 3:59 (338, 67)
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New comet discovered by de la Cueva, et al., Spain. Now it is 17.7 mag (July 28, I. de la Cueva, et al.). It keeps 17-18 mag until early 2013. It keeps observable in good condition until early 2012 in the Southern Hemisphere, although it locates low in the Northern Hemisphere. In the Northern Hemisphere, it will be observable in good condition from 2012 autumn to early 2013.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 1 18.96 -43 19.2 2.827 3.526 126 17.7 3:28 ( 0, 12)
Aug. 27 1 17.97 -44 17.0 2.774 3.499 128 17.7 2:59 ( 0, 11)
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Now it is 17.6 mag (July 22, Hidetaka Sato). It is observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it locates extremely low. It will be fainter than 18 mag in late September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 20 15 1.48 -30 43.1 2.525 2.642 85 17.7 20:14 ( 39, 11)
Aug. 27 15 13.03 -29 45.5 2.590 2.625 80 17.8 20:03 ( 41, 11)
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