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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. 2 10 24.56 17 12.5 1.910 0.935 10 9.1 4:05 (242, -9)
Sept. 9 10 40.92 20 31.5 1.787 0.870 16 8.7 4:11 (242, -3)
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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. 2 17 7.07 58 7.1 0.532 1.109 86 8.8 19:53 (154, 62)
Sept. 9 17 19.45 62 11.0 0.561 1.122 86 9.0 19:42 (159, 59)
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It is brightening as expected, and it is already visible visually. Now it is 11.7 mag (Aug. 22, Seiichi Yoshida). 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. 2 1 43.75 15 18.1 1.005 1.823 129 10.9 3:00 ( 0, 70)
Sept. 9 1 50.74 15 8.1 0.938 1.796 134 10.6 2:40 ( 0, 70)
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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 11.8 mag (Aug. 27, Juan Jose Gonzalez). It keeps very low, only about 15 degree high until September in the Northern Hemisphere. When it gets higher again, it will be fainter than 14 mag, too faint to see visually.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 2 19 54.58 -38 59.2 0.933 1.769 131 12.6 21:09 ( 0, 16)
Sept. 9 20 2.17 -37 48.6 1.005 1.799 126 12.9 20:49 ( 0, 17)
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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. 2 14 21.91 -4 4.1 2.615 2.212 55 13.0 19:53 ( 71, 18)
Sept. 9 14 27.10 -2 31.5 2.680 2.177 50 13.0 19:42 ( 74, 17)
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Since it appeared in the morning sky in early July, it has been bright as 12-13 mag and visible visually. It is 13.2 mag still now (Aug. 22, Seiichi Yoshida). It is observable in good condition until winter.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 2 4 21.71 30 50.2 5.738 5.835 90 13.5 4:05 (275, 70)
Sept. 9 4 23.43 31 3.4 5.632 5.837 96 13.5 4:11 (283, 77)
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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. 2 2 3.20 -15 48.0 0.649 1.515 130 13.8 3:20 ( 0, 39)
Sept. 9 1 51.57 -16 24.4 0.677 1.581 138 14.2 2:41 ( 0, 39)
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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. 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. 2 8 50.37 28 40.7 3.678 2.893 33 13.8 4:05 (246, 16)
Sept. 9 9 0.73 28 1.2 3.693 2.962 37 14.0 4:11 (249, 20)
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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.
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Best Time(A, h)
Sept. 2 22 0.13 23 36.0 1.119 2.039 146 14.3 23:12 ( 0, 79)
Sept. 9 21 46.50 25 22.5 1.071 1.972 143 14.1 22:31 ( 0, 81)
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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. 2 11 30.32 30 27.6 6.202 5.304 24 14.3 19:53 (124, 5)
Sept. 9 11 37.42 29 35.6 6.210 5.315 25 14.4 19:42 (125, 3)
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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. 2 17 37.38 -22 28.9 1.088 1.670 105 14.5 19:53 ( 16, 31)
Sept. 9 17 46.29 -22 26.6 1.109 1.631 100 14.4 19:42 ( 18, 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. 2 22 24.01 -23 23.1 2.300 3.282 163 14.7 23:37 ( 0, 32)
Sept. 9 22 19.42 -23 37.1 2.337 3.294 158 14.7 23:05 ( 0, 31)
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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 in September, 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. 2 9 26.95 18 43.3 2.666 1.766 21 15.3 4:05 (249, 3)
Sept. 9 9 44.99 16 54.0 2.651 1.774 23 15.3 4:11 (253, 5)
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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. 2 8 56.08 48 29.7 0.558 0.743 46 16.1 4:05 (227, 24)
Sept. 9 8 28.98 57 34.3 0.533 0.879 60 15.7 4:11 (220, 36)
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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. 2 18 48.49 -22 48.9 6.057 6.645 121 15.7 20:02 ( 0, 32)
Sept. 9 18 44.16 -22 31.7 6.143 6.618 114 15.7 19:42 ( 3, 32)
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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. 2 15 19.64 27 31.1 3.287 3.050 67 15.8 19:53 ( 94, 47)
Sept. 9 15 21.37 27 2.1 3.431 3.117 63 16.0 19:42 ( 95, 44)
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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. 2 7 18.96 25 41.2 1.996 1.582 51 16.0 4:05 (259, 32)
Sept. 9 7 39.75 23 56.6 1.955 1.578 53 15.9 4:11 (263, 34)
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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. 2 15 46.46 -12 44.2 1.326 1.491 78 16.4 19:53 ( 48, 27)
Sept. 9 16 10.26 -14 40.6 1.419 1.550 77 17.2 19:42 ( 45, 27)
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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. 2 0 37.45 50 51.9 3.122 3.679 116 16.4 1:55 (180, 74)
Sept. 9 0 28.94 49 28.9 3.074 3.712 122 16.4 1:19 (180, 75)
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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. 2 16 22.36 -16 13.0 2.558 2.704 87 16.9 19:53 ( 38, 29)
Sept. 9 16 20.87 -15 49.7 2.581 2.603 80 16.7 19:42 ( 43, 27)
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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. 2 6 18.45 24 35.5 2.109 1.918 65 16.9 4:05 (268, 44)
Sept. 9 6 10.85 22 45.5 1.984 1.955 73 16.9 4:11 (277, 51)
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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. 2 5 25.62 0 59.4 1.662 1.780 79 17.4 4:05 (304, 40)
Sept. 9 5 40.26 1 54.5 1.580 1.752 81 16.9 4:11 (308, 44)
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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. 2 19 22.95 47 14.6 3.400 3.851 109 17.0 20:37 (180, 78)
Sept. 9 19 22.51 46 28.6 3.395 3.827 107 17.0 20:09 (180, 79)
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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. 2 1 10.11 -14 8.7 3.171 4.027 143 17.1 2:27 ( 0, 41)
Sept. 9 1 6.86 -14 42.2 3.144 4.045 149 17.1 1:56 ( 0, 40)
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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. 2 22 34.94 -12 43.2 2.336 3.342 174 17.1 23:48 ( 0, 42)
Sept. 9 22 30.75 -13 19.9 2.361 3.352 167 17.1 23:16 ( 0, 42)
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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. 2 21 3.55 -15 8.7 5.345 6.271 154 17.1 22:17 ( 0, 40)
Sept. 9 20 57.50 -14 54.0 5.390 6.254 146 17.1 21:43 ( 0, 40)
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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. 2 4 54.28 14 43.8 1.652 1.866 85 17.3 4:05 (298, 55)
Sept. 9 5 7.28 14 55.3 1.599 1.874 88 17.1 4:11 (304, 59)
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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. 2 3 18.30 17 26.1 2.073 2.565 107 17.2 4:05 (337, 71)
Sept. 9 3 21.21 16 45.2 2.016 2.592 113 17.2 4:10 ( 0, 72)
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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. 2 23 44.45 -6 27.7 1.588 2.576 164 17.2 1:02 ( 0, 49)
Sept. 9 23 39.16 -6 16.3 1.596 2.598 172 17.3 0:29 ( 0, 49)
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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. 2 3 5.28 -1 43.9 7.212 7.687 114 17.3 4:05 (353, 53)
Sept. 9 3 2.87 -2 3.2 7.169 7.744 121 17.4 3:52 ( 0, 53)
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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. 2 19 39.34 4 38.6 4.486 5.219 132 17.4 20:53 ( 0, 60)
Sept. 9 19 34.73 3 16.6 4.518 5.173 125 17.4 20:21 ( 0, 58)
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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. 2 2 49.95 24 39.5 4.903 5.358 111 17.5 4:05 (357, 80)
Sept. 9 2 43.23 24 36.1 4.799 5.372 119 17.5 3:33 ( 0, 80)
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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. 2 3 40.45 8 34.8 1.006 1.590 104 18.1 4:05 (333, 61)
Sept. 9 3 53.29 11 33.4 0.933 1.563 107 17.7 4:11 (342, 65)
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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. 2 4 47.95 11 16.4 4.853 4.911 87 17.8 4:05 (304, 54)
Sept. 9 4 50.60 11 15.1 4.735 4.899 93 17.8 4:11 (314, 59)
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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. 2 4 33.89 42 51.2 3.873 3.939 86 17.9 4:05 (241, 68)
Sept. 9 4 39.15 43 47.5 3.771 3.929 91 17.8 4:11 (234, 73)
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