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Good condition and visible with naked-eye in the Southern Hemisphere. In the Northern Hemisphere, it will appear in the evening low sky in late May. It was a bit fainter than this ephemeris recently, 3.5 mag around May 10.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 2 16.53 -12 42.7 0.323 0.774 36 1.9 367.6 106.9 3:18 (269,-24)
May 22 6 14.02 -19 57.2 0.288 0.868 52 1.9 460.1 87.1 20:42 ( 76,-14)
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Good condition in the evening sky. After the approach to the earth on May 6, it should have start fading, however, it became brighter actually. It was 3 mag in mid May, brighter than this ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 8 32.02 18 19.5 0.415 0.962 71 4.1 207.6 24.7 20:35 ( 87, 41)
May 22 9 6.78 34 4.7 0.579 0.968 68 4.8 106.2 27.7 20:42 (106, 46)
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It appeared in the morning sky in late April, and it was observed as bright as 3-4 mag with a long tail as 10 deg in spite of locating very low. In the Northern Hemisphere, the comet will be higher and higher after this. Although it becomes fainter rapidly, it will be a good target for visual observation in May. Not observable in the Southern Hemisphere.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 1 6.67 43 31.8 1.398 0.875 38 8.4 32.5 16.8 3:18 (231, 20)
May 22 1 12.83 46 49.1 1.525 1.033 42 9.6 27.2 19.0 3:11 (229, 24)
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Appearing at dawn. Now it is 9.5 mag, as bright as expected. In the Northern Hemisphere, it keeps low after this until autumn. Not observable in the Southern Hemisphere.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 1 59.67 38 16.2 2.322 1.498 27 9.6 52.7 48.9 3:18 (230, 9)
May 22 2 24.61 42 10.5 2.318 1.516 29 9.6 52.7 51.8 3:11 (226, 11)
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It keeps 10-11 mag until mid May. Good condition in the Southern Hemisphere, but it locates lower than 10 deg in the Northern Hemisphere. It becomes higher after June, but the comet will be fading at that time.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 23 48.17 -5 21.9 1.629 1.413 59 10.2 44.8 68.0 3:18 (283, 9)
May 22 0 7.19 -3 26.2 1.619 1.434 60 10.3 42.9 67.8 3:11 (282, 11)
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The condition is worst in this return. It is not observable around the perihelion passage. It will appear at dawn in autumn, when it will already fade to 15 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 2 52.47 16 51.7 2.025 1.037 8 10.8 65.3 80.7 3:18 (238,-13)
May 22 3 24.00 17 54.9 2.031 1.038 8 10.3 64.8 83.1 3:11 (235,-15)
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Well condensed and easy to see. It will be 6.5 mag in the southern sky from autumn to winter in 2004. In the Northern Hemisphere, it is observable in good condition until early September when it becomes to 7.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 19 50.39 35 38.9 2.163 2.504 97 10.7 30.8 318.0 3:18 (263, 77)
May 22 19 36.30 38 22.7 2.002 2.421 101 10.3 36.6 310.8 3:11 (237, 84)
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It is observable in the evening low sky until June in the Southern Hemisphere, but it is fading.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 6 10.43 14 42.0 2.344 1.682 38 13.5 42.1 97.7 20:35 (102, 9)
May 22 6 30.39 13 58.6 2.399 1.707 37 13.6 41.6 99.1 20:42 (103, 5)
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Appearing at dawn. But no observations have been reported yet.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 0 8.38 7 25.1 6.324 5.724 49 13.7 10.1 60.0 3:18 (270, 13)
May 22 0 12.36 7 59.9 6.238 5.724 55 13.7 9.5 59.1 3:11 (272, 16)
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Appearing at dawn. It will fade out gradually, and keeps observable brighter than 17 mag until the end of 2004.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 0 56.14 14 28.1 4.915 4.148 36 14.7 3.8 18.4 3:18 (257, 7)
May 22 0 56.52 14 52.8 4.879 4.196 43 14.8 3.5 5.6 3:11 (260, 11)
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It became brighter than expected after the perihelion passage, and it was observed visually around 13.5 mag in February and March. It keeps the same brightness still in late April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 12 40.17 5 0.9 1.652 2.449 132 14.8 9.5 192.7 21:06 ( 0, 60)
May 22 12 39.82 3 54.3 1.739 2.474 126 15.0 9.8 176.6 20:42 ( 2, 59)
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Michael Jager reported as bright as 15.5 mag on Apr. 15. However, many CCD observers reported it as faint as 17-18 mag, probably because it is diffused. It will become low soon.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 4 50.93 67 6.3 1.625 1.246 50 15.0 42.4 163.5 20:35 (156, 25)
May 22 5 2.55 62 41.9 1.732 1.222 43 14.9 36.3 164.9 20:42 (153, 20)
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Not yet observed in this return. Appearing at dawn. If it keeps the same brightness as in the previous return, it should be as bright as 15.5 mag already.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 0 1.81 4 25.0 2.879 2.400 52 15.6 28.0 67.3 3:18 (273, 12)
May 22 0 13.93 5 40.4 2.787 2.371 55 15.3 28.0 67.5 3:11 (273, 15)
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At the previous appearance, it brightened after the perihelion passage and reached to 10 mag. If it has behaved so again, it could have reach to 13 mag in February and March. However, it must be much fainter actually than expected. It seems to go while nobody succeeded to observe it in this return.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 4 35.44 12 54.2 2.923 1.980 17 15.4 35.8 81.2 20:35 (114,-11)
May 22 4 52.15 13 28.5 2.992 2.031 15 15.6 34.6 82.7 20:42 (118,-14)
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It keeps locating high in the evening sky until August when it becomes fainter than 18 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 15 51.77 1 42.5 1.147 2.120 158 15.4 10.2 261.9 0:21 ( 0, 57)
May 22 15 47.14 1 26.2 1.184 2.156 158 15.5 10.1 251.4 23:44 ( 0, 56)
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It is expected to be 5 mag in 2005 spring. Until that time, it keeps observable in the Northern Hemisphere, which the comet will be getting brighter gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 5 33.97 69 10.3 5.014 4.493 53 15.5 9.0 99.9 20:35 (156, 30)
May 22 5 45.97 69 0.8 4.980 4.420 51 15.4 9.6 96.6 20:42 (157, 28)
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It was diffused around 11.5 mag visually in February and March. But it began to fade out rapidly in April and reached to 15 mag in late April. It will become low soon.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 8 21.56 -11 10.8 2.424 2.429 78 15.6 12.1 311.1 20:35 ( 61, 19)
May 22 8 18.06 -10 22.2 2.590 2.460 71 15.9 8.3 316.0 20:42 ( 68, 13)
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It is observable at 15-16 mag for a long time until 2005 autumn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 13 12.38 11 23.0 2.325 3.121 134 15.8 7.7 237.7 21:38 ( 0, 66)
May 22 13 9.75 10 50.2 2.374 3.108 128 15.8 7.0 220.9 21:07 ( 0, 66)
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In the Northern Hemisphere, it keeps fading at about 35 deg high until August when it becomes fainter than 18 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 19 42.54 -18 26.3 1.955 2.613 120 16.0 1.1 266.8 3:18 (345, 35)
May 22 19 41.26 -18 28.8 1.917 2.654 127 16.1 4.1 260.8 3:11 (351, 36)
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It was 18.5 mag in April, 1 mag or more fainter than expected. Now it should be brightening, but it can be fainter than this ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 20 6.88 -14 28.6 1.939 2.519 113 16.5 9.7 94.6 3:18 (336, 37)
May 22 20 11.02 -14 36.9 1.845 2.502 119 16.3 7.7 102.4 3:11 (341, 38)
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It will be observable at 17.5 mag in good condition until August.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 18 33.86 12 2.4 2.651 3.333 124 16.9 2.2 302.6 3:02 ( 0, 67)
May 22 18 32.53 12 6.8 2.608 3.346 129 16.9 3.6 270.0 2:34 ( 0, 67)
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It will be fading slowly until November when it becomes fainter than 18 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 19 12.38 37 54.3 5.762 6.064 102 16.9 10.7 344.3 3:18 (236, 85)
May 22 19 10.35 39 4.2 5.750 6.094 105 16.9 10.4 338.0 3:11 (182, 86)
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It keeps 17 mag until July.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 15 26.81 55 44.1 5.629 5.977 105 17.0 16.0 277.7 23:51 (180, 69)
May 22 15 13.79 55 51.8 5.678 5.991 103 17.0 15.5 270.7 23:10 (180, 69)
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It brightened rapidly in the former half of 2004 and reached to 17.5 mag. It becomes low in the evening sky in June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 11 33.35 12 0.5 3.453 3.978 114 17.2 2.6 195.2 20:35 ( 22, 66)
May 22 11 33.41 11 40.2 3.533 3.963 107 17.2 3.4 163.8 20:42 ( 39, 62)
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Althouhg it must be fainter than 17 mag, it unexpectedly brightened from February to March and reached to 14.5 mag. It has already begun to fade, and faded to 16 mag in mid April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 11 30.95 9 50.7 2.372 2.943 114 17.4 4.7 116.9 20:35 ( 21, 63)
May 22 11 33.37 9 32.7 2.488 2.973 108 17.7 6.7 116.6 20:42 ( 37, 60)
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New periodic comet. It only reaches to 17.5 mag at best, and will be fainter than 18 mag in late June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 15 7.03 -5 36.0 0.746 1.743 165 17.5 30.7 354.0 23:32 ( 0, 50)
May 22 15 5.76 -2 10.3 0.752 1.732 158 17.5 28.1 355.8 23:03 ( 0, 53)
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It becomes fainter than 18 mag in June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 11 55.31 50 53.1 1.643 2.018 96 17.6 11.2 13.9 20:35 (172, 74)
May 22 11 58.30 51 58.0 1.722 2.014 91 17.7 9.4 34.2 20:42 (158, 71)
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It will be fainter than 18 mag soon.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 15 13 19.43 6 56.8 6.399 7.193 139 17.7 7.6 254.0 21:45 ( 0, 62)
May 22 13 16.19 6 40.7 6.519 7.239 132 17.8 6.9 249.0 21:14 ( 0, 62)
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