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New comet discovered on the SWAN images. It was observed in the Southern Hemisphere in July, but now it is not observable. It was very bright as 9.6 mag visually on July 20 (David Seargent). It was about 10.0 mag in SOHO LASCO images on Aug. 15, almost bright as expected. In the Northern Hemisphere, it will appear at 7.5 mag in the extremely low sky at dawn in late September. It will turn to locate in the evening sky after early October. Then it keeps observable in the evening sky until early January while fading gradually. In the Southern Hemisphere, it cannot be observable until next April when it becomes fainter than 15 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 10 40.92 20 31.5 1.787 0.870 16 8.7 4:45 (259,-20)
Sept.16 11 0.92 24 10.0 1.649 0.820 22 8.2 4:35 (256,-23)
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Recovered after 117 year blank since 1889. This time it will be closer to the earth than at the discovery, and observable in good condition. It has been getting brighter and larger very rapidly since mid July. It is so bright as 8.4 mag still now, with a diameter of 8 arcmin or larger (Aug. 21, Juan Jose Gonzalez). In the Northern Hemisphere, it keeps locating very high in the evening sky until winter when it becomes too faint. It moves around the Northern Pole. So it will be observable all night until November, although it becomes low in the morning. It will be bright visually until September, but it will fade out rapidly after October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 17 19.45 62 11.0 0.561 1.122 86 9.0 19:10 (173, -8)
Sept.16 17 37.53 65 43.9 0.588 1.145 87 9.4 19:15 (172,-12)
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Now it is 11.7 mag (Sept. 4, Jakub Cerny). It is somewhat fainter than this ephemeris, however, it is well condensed and easy to see. It will be brightening rapidly after this, and will reach to 9 mag from autumn to winter, and observable in its best condition. It keeps 14 mag still in 2007 March, so it keeps visible visually for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 1 50.74 15 8.1 0.938 1.796 134 10.6 2:40 (180, 40)
Sept.16 1 56.70 14 42.5 0.877 1.772 140 10.3 2:18 (180, 40)
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It reached up to 10.3 mag on July 7 (Juan Jose Gonzalez). Then it is fading gradually. Now it is 12.6 mag (Sept. 11, Walter Ruben Robledo). It had been very low, only about 15 degree high in the Northern Hemisphere. But it will get higher gradually after this. However, it will be too faint to see visually soon.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 20 2.17 -37 48.6 1.005 1.799 126 12.9 20:49 ( 0, 87)
Sept.16 20 10.72 -36 33.1 1.083 1.831 122 13.2 20:30 ( 0, 89)
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It is bright as 12.6 mag and visible visually (June 21, Juan Jose Gonzalez). In the Northern Hemisphere, it locates rather low in the evening. It will be too low at dusk to observe in October. But it will be getting higher in the morning sky after December. It keeps 13 mag until 2007 March, so it will be visible visually for a long time.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 14 27.10 -2 31.5 2.680 2.177 50 13.0 19:10 (107, 27)
Sept.16 14 32.85 -1 4.8 2.736 2.145 44 13.0 19:15 (104, 20)
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A small outburst occured in late August, and it was visible visually, bright and strongly condensed, in early September. Since it appeared in the morning sky in early July, it has been bright as 12-13 mag and visible visually. It is observable in good condition until winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 4 23.43 31 3.4 5.632 5.837 96 13.5 4:45 (186, 24)
Sept.16 4 24.56 31 15.4 5.526 5.839 103 13.5 4:35 (183, 24)
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Although it had been asteroidal for about one year since 2005 July, the cometary activity was detected in late July in 2006. But actually, it is almost stellar now. In the Northern Hemisphere, it keeps good condition after this. It keeps locating high until next spring. Now it is 15.5 mag and completely stellar visually (Aug. 22, Seiichi Yoshida). The light curve had been completely asteroidal so far. However, it can brighten rapidly as a comet after this, and it may reach to 11 mag in winter. But actually, it is asteroidal so far, and still keeps around 14-15 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 21 46.50 25 22.5 1.071 1.972 143 14.1 22:31 (180, 29)
Sept.16 21 32.40 26 52.8 1.034 1.906 138 13.9 21:50 (180, 28)
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It had been observed at 10 mag in the evening sky from winter to spring. Although it has been unobservable since May, now it is appearing in the morning sky again. Now it is 14.5 mag (Sept. 2, Ken-ichi Kadota). It will come to locate high in October, then it will be visible visually again at 14 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 9 0.73 28 1.2 3.693 2.962 37 14.0 4:45 (239, -6)
Sept.16 9 10.40 27 23.1 3.700 3.031 42 14.1 4:35 (239, -4)
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It reached to 6 mag at best in early May at the remarkable approach to the earth, when it became double naked eye comets with the component B around the zenith. Now it is going away from the earth and fading. It has already faded down to 13.0 mag (Aug. 22, Seiichi Yoshida). It will be too faint to see visually soon. The component B has faded out rapidly since June, and already so faint, fainter than 17 mag.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 1 51.57 -16 24.4 0.677 1.581 138 14.2 2:41 (180, 71)
Sept.16 1 38.62 -16 48.9 0.713 1.647 146 14.7 2:01 (180, 72)
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It has been lost since its discovery in 1986. The condition is good in this return. In calculation, it will be 14 mag from autumn to winter. However, it was probably in outburst and brightened unexpectedly at the discovery. So it can be much fainer than this ephemeris actually. In the Northern Hemisphere, it keeps observable until it fades out in next spring.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 17 46.29 -22 26.6 1.109 1.631 100 14.4 19:10 (145, 75)
Sept.16 17 57.22 -22 22.9 1.129 1.594 96 14.3 19:15 (131, 72)
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It has been visible at 13.5 mag for a long time since last autumn until spring. Now it is not observable. However, it will be observable in good condition again at 14.5 mag in winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 11 37.42 29 35.6 6.210 5.315 25 14.4 19:10 (110,-25)
Sept.16 11 44.47 28 45.4 6.211 5.326 26 14.4 19:15 (106,-30)
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It is bright as 13.7 mag and visible visually (Aug. 22, Seiichi Yoshida). It keeps locating at the same altitude until December. But it will be too faint to see visually in October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 22 19.42 -23 37.1 2.337 3.294 158 14.7 23:05 (180, 79)
Sept.16 22 15.29 -23 44.2 2.386 3.306 151 14.8 22:33 (180, 79)
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It was in major outburst unexpectedly and reached to 10.5 mag in its last appearance in 1999. It was already recovered in 2005 October. But it has not been observed for about 1 year since that. So the current brightness is quite uncertain. It will appear in the morning sky at 15.5 mag soon, then it will fade out gradually. But actually, it can be much fainter than this ephemeris.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 9 44.99 16 54.0 2.651 1.774 23 15.3 4:45 (254, -7)
Sept.16 10 2.51 15 0.4 2.637 1.784 25 15.4 4:35 (256, -6)
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It is observable in good condition at 15 mag in September and October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 8 28.98 57 34.3 0.533 0.879 60 15.7 4:45 (212,-19)
Sept.16 7 45.97 66 16.2 0.517 1.002 74 15.5 4:35 (200,-19)
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It will be observable at 15.5 mag for a long time from September to January. However, it was 17.3 mag on Aug. 24 (Ernesto Guido and Giovanni Sostero), somewhat fainter than this ephemeris.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 7 39.75 23 56.6 1.955 1.578 53 15.9 4:45 (230, 11)
Sept.16 7 59.73 22 0.4 1.915 1.578 55 15.7 4:35 (232, 12)
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It is outside of Jupiter's orbit, so it keeps observable for a long time. Now it is 15.8 mag (June 2, Ernesto Guido and Giovanni Sostero). In 2006, it is still faint and locating somewhat low. But in 2007 and 2008, it is expected to be bright as 14.5-15 mag. It will locate high at that time, so it may be visible visually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 18 44.16 -22 31.7 6.143 6.618 114 15.7 19:30 (180, 78)
Sept.16 18 40.48 -22 14.2 6.237 6.592 106 15.8 19:15 (164, 77)
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It was observed as 12 mag in spring. It was diffuse visually, but bright and enjoyable with a large telescope. However, it has already faded down to 16.2 mag (Aug. 14, Mitsunori Tsumura). It keeps observable in good condition until autumn. It will be very low in November, but it will be getting higher in the morning sky after that. So it keeps observable for a long time until it becomes too faint.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 15 21.37 27 2.1 3.431 3.117 63 16.0 19:10 (139, 15)
Sept.16 15 23.83 26 36.8 3.569 3.185 59 16.1 19:15 (133, 11)
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It kept 16.5 mag for a year and a half since early 2005. Now it is at opposition and observable in very good condition. However, it will start fading after November, and will be fainter than 18 mag at the end of 2006.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 0 28.94 49 28.9 3.074 3.712 122 16.4 1:19 (180, 5)
Sept.16 0 20.18 47 49.0 3.037 3.745 128 16.4 0:43 (180, 7)
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It was observed at 18.5 mag on Aug. 27, as bright as expected (Luca Buzzi). It will brighten very rapidly in the morning sky after this. It will reach to 13.5 mag in November and December, and will be observable in an excellent condition.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 5 40.26 1 54.5 1.580 1.752 81 16.9 4:45 (219, 46)
Sept.16 5 54.77 2 52.6 1.499 1.726 84 16.5 4:35 (217, 45)
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It will pass only 0.17 A.U. from the sun in 2007 January. Now it is still faint as 17 mag. However, it may be already so bright as 14 mag (Aug. 21, Terry Lovejoy). The comet will be brightening gradually after this, but it keeps locating low in the evening in the Northern Hemisphere. It is not observable when it becomes brightest. After the perihelion passage, it is only observable in the Southern Hemisphere.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 16 20.87 -15 49.7 2.581 2.603 80 16.7 19:10 (117, 57)
Sept.16 16 20.60 -15 29.3 2.599 2.500 73 16.6 19:15 (109, 50)
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It was observed at 17 mag in spring. It will be observable in good condition at 17 mag again in autumn. It will be fainter than 18 mag in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 6 10.85 22 45.5 1.984 1.955 73 16.9 4:45 (214, 24)
Sept.16 6 0.91 20 38.9 1.856 1.996 82 16.8 4:35 (209, 29)
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It was 17.6 mag on July 23 (Filip Fratev). It will brighten after the perihelion passage. It will reach to 15.5 mag and will be observable in good condition from November to January.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 5 7.28 14 55.3 1.599 1.874 88 17.1 4:45 (202, 37)
Sept.16 5 19.36 15 2.4 1.546 1.884 92 16.9 4:35 (200, 38)
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It keeps 17 mag for a long time after this until the end of 2007. It will be observable in good condition in 2006 autumn and 2007 autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 19 22.51 46 28.6 3.395 3.827 107 17.0 20:09 (180, 9)
Sept.16 19 23.20 45 35.9 3.394 3.805 106 17.0 19:42 (180, 9)
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It was bright as 15 mag in 2004 and 2005. Now it is far away from the sun, but it still observable at 17 mag in 2006.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 1 6.86 -14 42.2 3.144 4.045 149 17.1 1:56 (180, 70)
Sept.16 1 3.02 -15 14.1 3.129 4.062 154 17.1 1:25 (180, 70)
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It was observed at 17 mag in 2005 summer. It will reach to 17 mag again in 2006 summer.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 22 30.75 -13 19.9 2.361 3.352 167 17.1 23:16 (180, 68)
Sept.16 22 26.87 -13 52.7 2.399 3.362 160 17.2 22:45 (180, 69)
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It is outside of Jupiter's orbit. So it keeps 16.5-17.5 mag for a long time until 2008. In 2006, it keeps observable in good condition until November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 20 57.50 -14 54.0 5.390 6.254 146 17.1 21:43 (180, 70)
Sept.16 20 51.92 -14 37.9 5.449 6.236 138 17.1 21:10 (180, 70)
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It will be observable at 17 mag in good condition in September and October. Then it will fade out rapidly, and will be fainter than 18 mag in December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 3 21.21 16 45.2 2.016 2.592 113 17.2 4:10 (180, 38)
Sept.16 3 22.81 15 56.7 1.963 2.619 120 17.1 3:44 (180, 39)
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It brightened much more rapidly than expected after late April, and reached to 9.5 mag on June 15 (Willian Souza). Then it has been fading very rapidly. It is reported bright as 12.7 mag visually still now (Aug. 27, Juan Jose Gonzalez), however, it will be too faint to see visually soon. CCD observers reported that it has already fainter than 16 mag. Although it keeps higher than 20 deg in the evening sky until November, it may be too faint to observe soon even by CCD observers.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 16 10.26 -14 40.6 1.419 1.550 77 17.2 19:10 (116, 54)
Sept.16 16 32.93 -16 17.7 1.519 1.609 76 18.0 19:15 (111, 53)
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Although it was so faint as 20.7 mag on Aug. 2 (P. Birtwhistle), it brightened very rapidly up to 17.9 mag on Aug. 28 (Filip Fratev). The condition of this apparition is excellent. It will brighten furthermore rapidly after this, and it is expected to reach to 16 mag in October and November.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 3 53.29 11 33.4 0.933 1.563 107 17.7 4:42 (180, 44)
Sept.16 4 5.89 14 52.4 0.865 1.539 110 17.3 4:27 (180, 40)
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It keeps observable at 17 mag in good condition until October.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 23 39.16 -6 16.3 1.596 2.598 172 17.3 0:29 (180, 61)
Sept.16 23 33.72 -6 4.5 1.617 2.622 176 17.4 23:51 (180, 61)
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It reached to 6 mag in 2004. It had been visible visually until January. It has already faded down to 17.2 mag (Aug. 9, Ken-ichi Kadota). It will be fading slowly around 17-18 mag until December.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 3 2.87 -2 3.2 7.169 7.744 121 17.4 3:52 (180, 57)
Sept.16 3 0.05 -2 23.2 7.135 7.801 128 17.4 3:22 (180, 57)
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It will reach to 14.5 mag in 2007 summer, but it will be observable only in the Southern Hemisphere at that time. Now it is 17.2 mag (Aug. 27, J. Young). In the Northern Hemisphere, it keeps observable at 17.5 mag in good condition until autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 19 34.73 3 16.6 4.518 5.173 125 17.4 20:21 (180, 52)
Sept.16 19 30.79 1 54.6 4.563 5.127 119 17.4 19:49 (180, 53)
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It was observed at 17 mag in late 2005. In 2006, it will be observable at 17.5 mag in autumn.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 2 43.23 24 36.1 4.799 5.372 119 17.5 3:33 (180, 30)
Sept.16 2 35.63 24 28.0 4.706 5.386 128 17.5 2:58 (180, 30)
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The perihelion passage is in 2008. It will be observable for several years after this at around 17 mag. But it may fade out rapidly just after the perihelion passage.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 4 50.60 11 15.1 4.735 4.899 93 17.8 4:45 (198, 42)
Sept.16 4 52.67 11 12.5 4.617 4.886 99 17.7 4:35 (193, 43)
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It will reach to 17 mag in autumn and winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 9 4 39.15 43 47.5 3.771 3.929 91 17.8 4:45 (188, 11)
Sept.16 4 43.67 44 44.1 3.669 3.919 96 17.8 4:35 (185, 10)
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