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It did not brighten as expected when it approached to the earth. But it reached to 3 mag anyway. Good condition and visible with naked-eye in the Southern Hemisphere. In the Northern Hemisphere, it appears in the evening low sky. It has a long tail of about 20 degree by photo.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 22 6 14.02 -19 57.2 0.288 0.868 52 3.7 460.1 87.1 20:42 ( 76,-14)
May 29 8 34.01 -14 29.8 0.480 0.970 71 5.3 162.8 75.4 20:49 ( 67, 8)
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Good condition in the evening sky. The brightening evolution became unexpectedly slower after April, but it brightened a bit in mid May and reached to 3 mag. Now 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 22 9 6.78 34 4.7 0.579 0.968 68 4.4 106.2 27.7 20:42 (106, 46)
May 29 9 30.22 42 16.0 0.765 0.989 65 5.1 60.8 30.5 20:49 (118, 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. It has a evident tail still in mid May. 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 22 1 12.83 46 49.1 1.525 1.033 42 9.6 27.2 19.0 3:11 (229, 24)
May 29 1 18.62 49 36.9 1.637 1.183 45 10.7 23.7 18.5 3:05 (227, 28)
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It will be visible as bright as 10 mag until July. In the Northern Hemisphere, it keeps low 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 22 2 24.61 42 10.5 2.318 1.516 29 9.6 52.7 51.8 3:11 (226, 11)
May 29 2 52.19 45 47.1 2.323 1.540 30 9.7 52.3 55.4 3:05 (222, 12)
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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 22 19 36.30 38 22.7 2.002 2.421 101 10.3 36.6 310.8 3:11 (237, 84)
May 29 19 16.87 41 9.6 1.852 2.338 105 10.0 43.4 303.2 2:51 (180, 84)
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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 22 3 24.00 17 54.9 2.031 1.038 8 10.3 64.8 83.1 3:11 (235,-15)
May 29 3 55.51 18 38.4 2.045 1.048 7 10.4 63.9 85.5 3:05 (233,-16)
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Good condition in the Southern Hemisphere, but it locates low 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 22 0 7.19 -3 26.2 1.619 1.434 60 10.3 42.9 67.8 3:11 (282, 11)
May 29 0 25.31 -1 35.2 1.609 1.458 62 10.5 40.9 67.8 3:05 (281, 13)
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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 22 0 12.36 7 59.9 6.238 5.724 55 13.7 9.5 59.1 3:11 (272, 16)
May 29 0 16.05 8 33.3 6.146 5.724 61 13.6 8.8 58.0 3:05 (274, 20)
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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 22 6 30.39 13 58.6 2.399 1.707 37 13.6 41.6 99.1 20:42 (103, 5)
May 29 6 49.95 13 8.8 2.455 1.734 35 13.8 41.1 100.5 20:49 (105, 2)
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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 22 0 56.52 14 52.8 4.879 4.196 43 14.8 3.5 5.6 3:11 (260, 11)
May 29 0 56.45 15 16.3 4.831 4.244 49 14.8 3.3 348.6 3:05 (262, 16)
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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 22 5 2.55 62 41.9 1.732 1.222 43 14.9 36.3 164.9 20:42 (153, 20)
May 29 5 10.72 58 52.0 1.829 1.207 38 14.9 31.7 165.7 20:49 (153, 15)
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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 22 12 39.82 3 54.3 1.739 2.474 126 15.0 9.8 176.6 20:42 ( 2, 59)
May 29 12 40.68 2 44.6 1.833 2.500 120 15.3 10.6 163.1 20:49 ( 17, 56)
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Observed as bright as expected. It will become brighter while getting higher after this, and be observable in good condition as bright as 11 mag in autumn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 22 0 13.93 5 40.4 2.787 2.371 55 15.3 28.0 67.5 3:11 (273, 15)
May 29 0 26.07 6 55.0 2.694 2.344 59 15.1 27.9 67.7 3:05 (274, 17)
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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. It will turn to be visible in the morning sky in July, then it will be visible visually at 13 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
May 22 5 45.97 69 0.8 4.980 4.420 51 15.4 9.6 96.6 20:42 (157, 28)
May 29 5 58.79 68 54.2 4.938 4.347 49 15.3 10.2 94.1 20:49 (158, 26)
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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 22 15 47.14 1 26.2 1.184 2.156 158 15.5 10.1 251.4 23:44 ( 0, 56)
May 29 15 42.92 0 57.7 1.232 2.193 155 15.7 9.7 239.7 23:13 ( 0, 56)
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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 22 13 9.75 10 50.2 2.374 3.108 128 15.8 7.0 220.9 21:07 ( 0, 66)
May 29 13 8.06 10 9.5 2.432 3.094 122 15.8 6.8 201.8 20:49 ( 6, 65)
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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 22 19 41.26 -18 28.8 1.917 2.654 127 16.1 4.1 260.8 3:11 (351, 36)
May 29 19 38.61 -18 35.4 1.886 2.695 134 16.1 6.8 259.8 3:05 (358, 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 22 20 11.02 -14 36.9 1.845 2.502 119 16.3 7.7 102.4 3:11 (341, 38)
May 29 20 14.10 -14 52.0 1.757 2.485 125 16.2 5.9 117.1 3:05 (347, 39)
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It keeps 17 mag until July, and keeps good condition until September 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 22 18 32.53 12 6.8 2.608 3.346 129 16.9 3.6 270.0 2:34 ( 0, 67)
May 29 18 30.42 12 2.1 2.574 3.361 134 16.9 5.3 255.2 2:04 ( 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 22 19 10.35 39 4.2 5.750 6.094 105 16.9 10.4 338.0 3:11 (182, 86)
May 29 19 7.74 40 8.4 5.743 6.124 107 17.0 9.9 331.6 2:41 (180, 85)
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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 22 15 13.79 55 51.8 5.678 5.991 103 17.0 15.5 270.7 23:10 (180, 69)
May 29 15 1.17 55 46.3 5.736 6.006 100 17.1 14.9 263.7 22:30 (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 22 11 33.41 11 40.2 3.533 3.963 107 17.2 3.4 163.8 20:42 ( 39, 62)
May 29 11 34.24 11 15.2 3.616 3.947 101 17.2 4.6 146.9 20:49 ( 51, 56)
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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 22 15 5.76 -2 10.3 0.752 1.732 158 17.5 28.1 355.8 23:03 ( 0, 53)
May 29 15 5.24 0 53.2 0.769 1.724 150 17.5 24.3 359.8 22:35 ( 0, 56)
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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 22 11 33.37 9 32.7 2.488 2.973 108 17.7 6.7 116.6 20:42 ( 37, 60)
May 29 11 36.61 9 8.9 2.607 3.003 103 18.0 8.5 116.3 20:49 ( 48, 55)
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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 22 11 58.30 51 58.0 1.722 2.014 91 17.7 9.4 34.2 20:42 (158, 71)
May 29 12 3.25 52 42.7 1.800 2.014 86 17.8 9.2 56.1 20:49 (149, 68)
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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 22 13 16.19 6 40.7 6.519 7.239 132 17.8 6.9 249.0 21:14 ( 0, 62)
May 29 13 13.37 6 22.1 6.650 7.284 125 17.9 6.2 242.8 20:49 ( 3, 61)
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