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Great outburst occured on Oct. 24, 2007, and it bacame a naked eye comet of 2 mag. It kept so bright as 5.5 mag still on Apr. 30 (Carlos Labordena), but it was extremely faint and difficult to see. The size was so large, the diameter was larger than 60 arcmin. It is not observable in this summer. But it will become observable in good condition in autumn again. The extremely faint large diffuse object may be detected with a best sky condition, around 5-6 mag with a diameter of 1 or 2 degrees.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 7 56.67 30 27.4 4.554 3.646 23 6.1 3:40 (236, 5)
Aug. 16 8 5.66 29 58.2 4.539 3.673 27 6.1 3:48 (240, 10)
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It became so bright as 4.7 mag, and so large as 20 arcmin in June (June 12, Marco Goiato). Now it is fading. But it is still bright as 7.2 mag (Aug. 9, Maik Meyer). It keeps observable in good condition for a long time after this. It will be visible visually until around November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 2 41.46 19 35.4 0.553 1.177 92 8.1 3:40 (295, 61)
Aug. 16 2 33.33 21 17.0 0.589 1.262 100 8.6 3:48 (308, 70)
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Now it is 8.6 mag (Aug. 6, Marco Goiato). The brightness evolution got slow down in July. It is expected to be 7.5 mag in September. It keeps moving in the southern sky, and it is unobservable for a while in the Northern Hemisphere. It will appear in the evening sky at 8 mag in late September, but it keeps locating in the evening low sky until the end of 2008 when it fades out down to 10 mag. Then it turns to appear in the morning sky, and it keeps observable in the northern sky after that while fading gradually. In the Southern Hemisphere, it keeps observable until late October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 9 34.54 -46 35.1 1.483 1.357 62 8.3 20:29 ( 56,-45)
Aug. 16 10 22.39 -47 30.4 1.412 1.293 61 8.1 20:19 ( 54,-40)
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Now it is 9.9 mag (Aug. 7, Marco Goiato). Brightening rapidly as expected, and expanding the large coma. It will reach up to 9 mag and keep bright for a long time from summer to autumn. In the Northern Hemisphere, it becomes low in the south at brightest, but it keeps observable until it fades out.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 20 5.85 -11 38.0 0.354 1.355 162 10.6 22:53 ( 0, 43)
Aug. 16 20 17.41 -18 19.9 0.359 1.354 158 10.3 22:37 ( 0, 36)
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Now it is so bright as 9.6 mag (Aug. 2, Juan Jose Gonzalez). The condition in this apparition is bad. In the Southern Hemisphere, it keeps extremely low, or under the horizon, so it will not be observable. In the Northern Hemisphere, it is finally appearing in the morning sky. It keeps observable and fading in the morning sky after this. Now it is brighter than originally expected.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 7 5.50 24 59.3 2.121 1.370 31 10.5 3:40 (247, 11)
Aug. 16 7 30.25 26 3.1 2.113 1.385 33 10.5 3:48 (248, 14)
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Now it is so bright as 9.8 mag (Aug. 6, Juan Jose Gonzalez). In the Northern Hemisphere, it keeps observable until 2009 spring when the comet becomes faint. It will move near by the Northern Pole from summer to autumn, and will be observable all night. It keeps bright at 10 mag until August, then it will be visible visually until around October. In the Southern Hemisphere, it will never be observable again.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 21 11.73 85 21.1 1.648 1.759 78 10.6 0:03 (180, 40)
Aug. 16 19 33.30 87 26.8 1.680 1.779 78 10.8 21:35 (180, 37)
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It brightened up to 9.2 mag on July 15 (Juan Jose Gonzalez). It is bright as 10.8 mag still on Aug. 3 (Seiichi Yoshida). Although it kept locating extremely low for a while in the Northern Hemisphere, it is getting higher gradually after this. It will be fading gradually after this, but it will be visible visually until September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 6 13.67 26 40.3 1.692 1.188 43 11.0 3:40 (252, 22)
Aug. 16 6 36.94 26 53.2 1.729 1.245 45 11.4 3:48 (253, 25)
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Now it is 11.0 mag (Aug. 2, Marco Goiato). Small and strongly condensed. It is expected to reach to 6 mag in 2009 February. It keeps observable until October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 18 42.19 -21 18.8 1.631 2.516 143 11.6 21:27 ( 0, 34)
Aug. 16 18 15.31 -21 39.5 1.660 2.439 130 11.5 20:33 ( 0, 33)
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Now it is bright as 11.4 mag (Aug. 3, Carlos Labordena). Slightly fainter than originally expected, but brightening well. It will reach to 11 mag and will be observable in good condition in autumn. It keeps observable, visible visually, brighter than 14 mag for a long time until 2009 May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 3 45.69 49 19.2 2.558 2.467 73 11.7 3:40 (232, 55)
Aug. 16 4 3.23 50 53.8 2.491 2.455 76 11.6 3:48 (228, 58)
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It reached to 10.9 mag in May (May 11, Marco Goiato). Now it is fading slowly. It has already faded down to 12.0 mag (July 21, Alexandre Amorim). In the Southern Hemisphere, it keeps observable until late August when it fades down to 12 mag. In the Northern Hemisphere, it will be unobservable soon. But it will appear in the morning sky again at 13 mag at the end of 2008, then it keeps bright and observable for a while.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 12 2.31 -3 52.1 3.404 2.789 45 11.9 20:29 ( 84, 2)
Aug. 16 12 13.37 -3 26.3 3.482 2.799 41 12.0 20:19 ( 85, 1)
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Now it is bright as 11.5 mag (Aug. 4, Marco Goiato). It keeps bright at 12 mag for a long time from 2008 spring to 2009 spring. However, it is only observable until mid August in the Northern Hemisphere because the comet moves southwards. It keeps observable for a long time in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 15 28.06 -34 48.4 2.468 2.846 101 12.0 20:29 ( 28, 13)
Aug. 16 15 22.88 -36 3.6 2.561 2.820 94 12.0 20:19 ( 31, 10)
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Brightening very rapidly, faster than expected. It is already so bright as 12.3 mag (Aug. 2, Juan Jose Gonzalez). It is expected to reach to 10 mag in 2009 summer. Because it moves in the northern sky, it keeps observable until it becomes brightest in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 4 7.62 66 37.8 4.649 4.414 70 13.2 3:40 (207, 48)
Aug. 16 4 4.27 68 3.4 4.516 4.370 75 13.1 3:48 (202, 50)
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It reached up to 9.5 mag on Mar. 29 (Maik Meyer). Now it is fading slowly. It faded down to 10.7 mag on May 11 (Marco Goiato), and it was a diffuse object with a weak condensation. In the Northern Hemisphere, it will never be observable again. In the Southern Hemisphere, it keeps observable until it fades out. No observations have been reported recently, and the current brightness is uncertain.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 9 50.60 -35 28.5 2.546 2.080 51 13.5 20:29 ( 70,-40)
Aug. 16 10 6.68 -38 10.8 2.621 2.155 52 13.7 20:19 ( 67,-41)
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Now it is bright as 12.7 mag (Apr. 12, Marco Goiato). In the Northern Hemisphere, it got very low in the evening sky, and will be unobservable soon. Then the comet will go southwards, so it will never be observable again in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable in good condition for a long time until autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 12 50.66 -15 25.7 3.326 2.977 61 14.0 20:29 ( 67, 5)
Aug. 16 12 59.27 -16 51.8 3.397 2.975 57 14.1 20:19 ( 68, 2)
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In the last season, it became so bright as 10 mag in 2008 January. Although it had been unobservable for a while, now it is appearing in the morning sky.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 7 34.13 25 16.8 6.948 6.050 25 14.1 3:40 (243, 6)
Aug. 16 7 39.58 25 2.6 6.896 6.052 31 14.1 3:48 (247, 12)
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It was 15 mag on Jan. 14 (Michael Mattiazzo), brightening as expected. Now it must have reached up to 13.5 mag in the southern sky. In the Southern Hemisphere, it keeps observable for a long time after this. But in the Northern Hemisphere, it is not observable now. But it will appear in the morning sky at 15 mag in November, then it keeps observable while the comet will be fading slowly.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 9 16.41 -33 13.0 3.143 2.594 49 14.1 3:40 (284,-46)
Aug. 16 9 32.59 -32 36.6 3.209 2.616 46 14.2 3:48 (285,-42)
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Now it is 12.7 mag (Aug. 1, Juan Jose Gonzalez), bright and visible visually. It will be getting lower in the evening sky after this, and will be too low to observe in October. But it will locate high again in winter, and will be visible visually at 14 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 14 56.94 21 30.7 5.881 5.789 79 14.4 20:29 ( 81, 51)
Aug. 16 14 54.94 21 7.6 5.997 5.802 74 14.4 20:19 ( 84, 47)
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It had been so faint as 18 mag until July. However, an outburst occured on Aug. 3 and brightened up to 14.5 mag (Gustavo Muler). It is bright as 14.4 mag still on Aug. 6, and looks almost stellar (Erik Bryssinck). However, it will fade out rapidly after this.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 14 38.01 1 19.6 3.411 3.392 80 14.5 20:29 ( 62, 36)
Aug. 16 14 42.62 0 3.7 3.479 3.369 75 14.6 20:19 ( 64, 32)
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Now it is 15.1 mag (Aug. 1, John Drummond). It is not observable in the Northern Hemisphere now, but observable in good condition in the Southern Hemisphere. It is expected to brighten up to 10 mag from late 2009 to early 2010. Because the comet moves in the southern sky for a long time, it keeps impossible or very hard to observe in the Northern Hemisphere until 2009 September. But after 2009 October, it is observable at 10 mag for a while in good condition. In the Southern Hemisphere, it keeps observable for a long time while brightening until 2009 June when it brightens to 11 mag. But it becomes unobservable around and after the brightest time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 5 29.83 -39 3.0 5.083 4.940 76 14.8 3:40 (313, -8)
Aug. 16 5 36.99 -39 44.7 4.990 4.884 78 14.7 3:48 (317, -4)
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Now it is 14.8 mag (July 29, M. Tichy). Now it is brightest, and it will be fading after this. It keeps observable in good condition until it fades out in winter. The position is very different from the original prediction.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 3 39.24 14 4.9 1.609 1.760 80 15.4 3:40 (288, 47)
Aug. 16 3 52.72 14 48.7 1.570 1.780 84 15.5 3:48 (292, 52)
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An outburst occured in late May, and it brightened up to 14.6 mag (May 23, Gustavo Muler). However, it faded down to the original brightness in late May. Now it is 17.3 mag (June 24, Catalina Sky Survey). It will reach to 14 mag in autumn, but it locates extremely low in the Northern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 12 56.24 8 26.3 1.709 1.384 54 15.7 20:29 ( 86, 20)
Aug. 16 13 13.50 5 5.8 1.701 1.351 52 15.6 20:19 ( 83, 18)
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Now it is 16.8 mag (July 7, Gustavo Muler). It keeps observable while the comet will be brightening gradually after this. It will reach up to 14.5 mag in autumn. However, then it locates low in the evening sky, and it will be unobservable soon in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 15 32.68 -5 58.6 2.078 2.398 95 15.7 20:29 ( 43, 39)
Aug. 16 15 38.05 -6 44.7 2.118 2.355 90 15.6 20:19 ( 46, 37)
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Now it is 15.6 mag (July 28, Ken-ichi Kadota). It will be 15.5 mag until October. It locates somewhat low in the Northern Hemisphere, but it keeps observable around 16 mag until winter. It is also observed visually at 14.6 mag (Aug. 6, Juan Jose Gonzalez).
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 21 21.37 -29 34.3 1.980 2.974 166 15.7 0:12 ( 0, 25)
Aug. 16 21 15.52 -29 31.8 1.978 2.961 162 15.7 23:34 ( 0, 26)
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Not it is 16.5 mag (July 31, Gustavo Muler). It will be brightening gradually after this, and reach to 12-13 mag in 2009 winter and spring. In the Northern Hemisphere, it keeps observable for a long time until 2009 May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 21 31.10 -27 8.2 1.494 2.495 168 16.4 0:21 ( 0, 28)
Aug. 16 21 22.90 -27 52.4 1.450 2.443 165 16.3 23:41 ( 0, 27)
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It was observed at 16.5 mag in last winter. Now it is appearing in the morning sky again. It will be observable at 15.5 mag in good condition in next autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 4 14.06 21 42.4 3.516 3.329 71 16.5 3:40 (273, 44)
Aug. 16 4 9.83 22 9.4 3.376 3.330 78 16.4 3:48 (279, 52)
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Now it is 16.0 mag (June 30, Michael Jager). It keeps observable in good condition after this in the Northern Hemisphere. It will be fading gradually, and will be fainter than 18 mag in November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 23 12.19 52 45.2 1.968 2.463 107 16.4 2:02 (180, 72)
Aug. 16 23 4.23 54 42.3 1.985 2.511 109 16.5 1:27 (180, 70)
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Now it is 16.8 mag (July 13, Gustavo Muler). It will be observable at 16 mag in good condition in autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 2 44.24 12 4.1 1.787 2.119 94 16.5 3:40 (305, 56)
Aug. 16 2 54.31 12 21.7 1.712 2.114 98 16.5 3:48 (313, 60)
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It brightened up to 15.0-15.5 mag on June 24 (Michael Jager). But it is already fading. It has already faded down to 18.3 mag (July 24, Yasukazu Ikari). It will be getting lower rapidly in the evening sky after this. It will be fainter than 18 mag, and will be too low to observe, in September.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 14 39.97 16 40.0 1.936 1.973 77 16.9 20:29 ( 77, 45)
Aug. 16 14 45.52 11 32.7 2.050 2.013 73 17.1 20:19 ( 74, 40)
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It is expected to reach up to 7 mag in winter, and will be observable in good condition. However, this comet has not been observed since 1986. It was not detected, fainter than 18 mag, on May 31 (Katsumi Yoshimoto). Nothing brighter than 20.6 mag was found around the predicted position on June 12 (Mitsunori Tsumura). It is predicted to be brightening up to around 17 mag, bright enough to be recovered. It will brighten very rapidly near by the perihelion. The condition of this apparition is good. It keeps observable for a long time until 2009 early summer both in the Northern Hemisphere and Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 20 5.86 -25 14.5 1.045 2.030 161 17.5 22:51 ( 0, 30)
Aug. 16 19 56.53 -25 22.9 1.011 1.965 152 16.9 22:15 ( 0, 30)
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It was observed at 16.5-17 mag in 2007 autumn. Now it is 17.3 mag (July 2, J. F. Hernandez). It will be observable at 17 mag for a long time from summer to autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 4 17.13 26 19.3 2.632 2.471 69 17.0 3:40 (266, 45)
Aug. 16 4 27.07 26 45.8 2.576 2.497 74 17.0 3:48 (269, 51)
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It must have already brightened up to 17 mag. However, it was not detected, fainter than 18.5 mag on Aug. 2 (Giovanni Sostero and Ernesto Guido). It is expected to brighten rapidly after this and reach up to 10 mag in winter. However, it may be much fainter than expected in fact. It keeps observable in good condition for a long time until early summer in next year when the comet fades out.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 2 25.04 18 24.7 1.938 2.290 96 17.4 3:40 (303, 63)
Aug. 16 2 34.13 19 11.6 1.813 2.241 101 17.1 3:48 (312, 68)
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It was bright as 12.7 mag on May 12 (Juan Jose Gonzalez), and strongly condensed. However, it has been getting diffuse and fading rapidly after that. Now it is 16.6 mag (July 5, Ken-ichi Kadota). A temporary outburst seems to be ending. It keeps observable in good condition until autumn. But it is moving southwards gradually, and the altitude will be getting somewhat lower in the Northern Hemisphere. It must be already too faint to see visually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 16 32.99 -20 13.8 1.985 2.557 112 17.1 20:29 ( 19, 32)
Aug. 16 16 37.66 -20 52.2 2.079 2.571 107 17.4 20:19 ( 22, 31)
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It was bright as 15.0 mag on July 5 (Michael Jager), but it has already faded down to 17.1 mag (July 31, Z. Kanuchova, M. Pikler, M. Husarik). It moved northwards very fast, but it will be fainter than 18 mag soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 17 55.33 -10 44.5 1.709 2.493 130 17.1 20:41 ( 0, 44)
Aug. 16 17 46.84 -8 32.0 1.857 2.543 121 17.4 20:19 ( 5, 46)
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It will brighten up to 12 mag in 2012. It is faint still in 2008, but observable at 17 mag in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 23 22.28 8 7.1 9.845 10.649 140 17.2 2:12 ( 0, 63)
Aug. 16 23 19.22 7 54.9 9.741 10.611 147 17.2 1:41 ( 0, 63)
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It was observed at 17.5-18 mag in 2006 and 2007. In 20080, it will be observable at 17.5-18 mag from summer to autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 22 50.95 -21 12.8 3.197 4.149 157 17.3 1:41 ( 0, 34)
Aug. 16 22 47.75 -22 2.1 3.175 4.152 162 17.3 1:10 ( 0, 33)
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It will be observable at 17 mag in good condition in autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 0 50.10 30 10.8 1.754 2.319 111 17.4 3:39 ( 0, 85)
Aug. 16 0 54.80 30 21.6 1.686 2.318 116 17.3 3:17 ( 0, 85)
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It was observed at 16.5-17 mag in 2006 and 2007. Because it is a very distant comet, it is observable at 17 mag still in 2008 in good condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 17 55.57 44 3.9 6.124 6.454 104 17.5 20:42 (180, 81)
Aug. 16 17 49.40 43 36.3 6.191 6.475 101 17.6 20:19 (167, 81)
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Now it is 18.2 mag (July 2, J. M. Ruiz M.). It will be observable at 16 mag in good condition from autumn to winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 2 17.44 23 52.9 2.529 2.830 96 18.0 3:40 (295, 68)
Aug. 16 2 22.87 24 49.0 2.417 2.803 101 17.9 3:48 (306, 74)
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Peculiar asteroid moving along a cometary orbit with a period of 40 years. It will be observable at 18 mag in good condition from August to September. It has already passed the perihelion in May.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 22 26.85 5 26.3 2.148 3.083 152 18.0 1:17 ( 0, 60)
Aug. 16 22 21.92 6 10.8 2.136 3.097 157 17.9 0:44 ( 0, 61)
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It was predicted to be so bright as 14 mag now. But actually, it is extremely faint as 19.5 mag (Aug. 4, Gustavo Muler). Although it locates in good condition, it will be hard to observe.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 22 21.18 16 20.1 1.530 2.425 144 19.8 1:11 ( 0, 71)
Aug. 16 22 17.65 16 33.4 1.548 2.469 148 19.8 0:40 ( 0, 72)
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It was observed at 16-17 mag at the discovery in 1999. It is predicted to be already 18 mag. But actually, it was not detected, fainter than 22.5 mag, in 2006 September (Carl Hergenrother). So it must be now fainter than at the discovery by 3-4 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Aug. 9 0 18.22 5 32.1 3.443 4.170 130 21.3 3:08 ( 0, 61)
Aug. 16 0 16.72 5 28.8 3.351 4.152 137 21.2 2:39 ( 0, 61)
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