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It brightened rapidly after early April and reached to 4.5-5.0 mag in mid April. After now, it locates just on the horizon at dusk until early May in the Northern Hemisphere. In the Southern Hemisphere, it will be observable in May and June, but it only locates very low in the evening sky. It may vanish at the perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 1 50.35 32 55.7 1.183 0.445 21 3.8 151.2 90.0 3:52 (226, -2)
Apr. 27 3 8.45 29 59.8 1.233 0.451 20 4.0 135.8 109.1 20:13 (125, 2)
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The return of comet in 1661 with 340 year period. It has been 0.5 mag brighter than this ephemeris since the perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 22 25.39 59 27.1 0.428 0.882 61 4.5 125.8 291.1 3:52 (218, 39)
Apr. 27 20 21.10 61 14.8 0.406 1.001 77 4.8 135.8 263.9 3:42 (210, 55)
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After it brightened rapidly and reached to 10 mag in February, it did not brightened more and kept 10 mag all over though it became closer to the earth. It may fade out very soon after this. It is moving fast towards south and will be low in the evening sky in mid June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 9 16.04 59 52.8 0.558 1.154 90 10.1 177.7 174.5 20:06 (167, 65)
Apr. 27 9 26.55 40 39.3 0.614 1.213 93 10.5 148.7 175.2 20:13 (113, 76)
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New comet. It will move northwards after this. It keeps observable until it fades out in the Northerm Hemisphere. It keeps brighter than 12 mag until May. It will approach to C/2002 C1 ( Ikeya-Zhang ) around May 1.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 19 25.65 45 17.8 1.404 1.672 86 10.5 69.9 1.9 3:52 (235, 68)
Apr. 27 19 26.00 53 6.9 1.458 1.720 86 10.7 63.8 358.8 3:42 (214, 67)
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It suddenly bursted out in late January and reached to 2.5 mag. Then it had been fading rapidly down to 9.5 mag. But the fading became slower in April. It must be 1 mag or more 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)
Apr. 20 18 49.27 16 36.7 1.283 1.775 101 10.6 48.3 331.4 3:52 (317, 66)
Apr. 27 18 36.94 21 20.0 1.318 1.880 107 11.0 46.7 325.3 3:42 (327, 74)
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The condition in this return is bad. It is not observable until June in the Southern Hemisphere, until August in the Northern Hemisphere.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 1 17.27 -2 3.1 2.541 1.598 15 12.0 42.9 75.2 3:52 (258,-20)
Apr. 27 1 36.35 -0 48.6 2.570 1.639 17 12.0 41.6 75.7 3:42 (257,-20)
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New comet. Appearing at dawn, but it must have vanished after the perihelion passage on Apr. 16.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 1 13.30 17 11.1 0.932 0.195 10 12.2 145.4 289.4 3:52 (243, -8)
Apr. 27 0 32.97 19 43.2 1.042 0.455 25 21.9 50.6 282.4 3:42 (249, 5)
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It will be observable at 13 mag until September. It is fainter than 14 mag by CCD.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 0 39.65 68 46.9 3.965 3.545 58 12.9 19.8 30.9 3:52 (203, 28)
Apr. 27 0 53.79 70 48.6 3.964 3.544 58 12.9 20.7 30.8 3:42 (201, 29)
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Takuo Kojima reported that it was in outburst at 14.4 mag on Mar. 28.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 21 1.82 -18 34.0 5.983 5.843 77 13.6 6.4 69.8 3:52 (310, 19)
Apr. 27 21 4.55 -18 19.3 5.872 5.841 83 13.6 5.5 68.8 3:42 (313, 21)
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It was as faint as 16.5 mag in mid March. It may reach only to 13.5 mag in May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 19 42.76 -2 30.7 0.778 1.296 92 14.2 57.0 103.1 3:52 (317, 43)
Apr. 27 20 9.00 -4 8.7 0.740 1.279 92 14.0 58.6 104.9 3:42 (316, 41)
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Getting higher in the morning sky. It will be 13 mag in June and July.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 20 26.09 18 9.2 2.992 2.955 78 14.6 11.8 303.2 3:52 (284, 50)
Apr. 27 20 20.38 18 55.1 2.839 2.924 84 14.4 14.9 296.4 3:42 (288, 55)
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It will be observable at 15 mag until August when it becomes low in the evening sky. It is brighter than this ephemeris recently, 14.5 mag even by CCD.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 11 1.79 20 14.6 2.553 3.266 127 15.0 5.0 246.2 21:08 ( 0, 75)
Apr. 27 11 0.01 19 56.8 2.609 3.245 121 15.0 4.0 219.8 20:38 ( 0, 75)
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It is observable until autumn at 15 mag. It was reported as 14 mag visually, but as 16 mag by CCD, so there is a large difference.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 9 55.78 69 53.5 5.007 5.097 89 15.1 11.6 174.2 20:06 (179, 55)
Apr. 27 9 58.01 68 31.2 5.081 5.111 86 15.1 12.1 169.5 20:13 (174, 56)
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It will be 11 mag in 2003 February. Although it was reported as 13.5 mag visually, it is fainter than this ephemeris recently, fainter than 16 mag by CCD.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 10 3.11 -5 37.5 4.474 5.098 123 15.1 14.8 299.7 20:09 ( 0, 49)
Apr. 27 9 57.46 -4 47.5 4.531 5.048 115 15.1 13.2 301.6 20:13 ( 14, 49)
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It will be 15 mag in spring and summer. It was a bit brighter than this ephemeris recently.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 17 5.95 6 52.3 4.667 5.345 128 15.1 12.8 340.0 3:15 ( 0, 62)
Apr. 27 17 3.59 8 16.6 4.594 5.333 133 15.1 13.2 334.9 2:45 ( 0, 63)
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Fading now. It is observable in good condition until to fade out.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 11 32.14 47 24.3 2.019 2.591 113 15.1 15.0 195.6 21:38 (180, 78)
Apr. 27 11 30.21 45 40.4 2.124 2.640 109 15.4 15.3 186.4 21:09 (180, 79)
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It will be 10.5 mag in 2003 spring. It was fainter than this ephemeris, around 16 mag recently.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 6 16.59 26 39.8 3.132 2.840 64 15.3 17.6 94.2 20:06 ( 96, 42)
Apr. 27 6 26.05 26 29.6 3.191 2.814 59 15.3 18.8 94.9 20:13 ( 99, 37)
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The condition in this return is bad. We can observe it only until August before perihelion passage when it becomes to 13 mag in the evening sky.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 11 41.69 8 54.5 1.777 2.642 142 15.4 10.1 290.1 21:47 ( 0, 64)
Apr. 27 11 37.71 9 14.2 1.796 2.601 134 15.3 7.5 286.5 21:16 ( 0, 64)
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It will reach to 13 mag at the end of this year. In the northern hemisphere, it keeps low in the south after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 15 58.64 -39 0.3 2.290 3.130 140 15.5 7.9 230.5 2:08 ( 0, 16)
Apr. 27 15 54.31 -39 32.9 2.185 3.074 146 15.4 9.3 242.7 1:36 ( 0, 15)
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Fading rapidly after February. The observation season will end soon.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 5 20.35 18 10.2 2.546 2.067 51 15.9 33.6 78.8 20:06 ( 94, 27)
Apr. 27 5 36.35 18 50.9 2.661 2.124 48 16.1 32.5 80.7 20:13 ( 97, 23)
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It is brighter than this ephemeris recently, 15.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 10 29.53 24 58.7 1.837 2.485 119 15.9 13.5 192.1 20:36 ( 0, 80)
Apr. 27 10 28.82 23 23.4 1.894 2.468 113 15.9 13.9 179.8 20:13 ( 7, 78)
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It keeps brighter than 17 mag until August.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 15 54.16 -16 33.9 2.961 3.861 149 16.1 6.9 277.4 2:03 ( 0, 38)
Apr. 27 15 50.50 -16 27.1 2.922 3.869 157 16.1 8.2 277.3 1:32 ( 0, 39)
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Asteroid with a cometary orbit of 6.8 year period. Fading now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 10 34.98 23 15.2 1.002 1.746 120 16.2 24.5 135.4 20:42 ( 0, 78)
Apr. 27 10 43.91 21 13.8 1.088 1.787 117 16.4 25.1 133.4 20:23 ( 0, 76)
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Fading. It will be about 18 mag in June when it becomes low in the evening.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 12 9.56 -12 57.2 4.672 5.600 155 16.8 14.1 276.8 22:15 ( 0, 42)
Apr. 27 12 3.18 -12 45.5 4.774 5.649 147 16.9 12.8 277.4 21:41 ( 0, 42)
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Fading very slowly. It was brighter than the ephemeris recently, reported around 16 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 9 13.56 16 52.1 6.511 6.856 105 16.8 6.3 305.6 20:06 ( 32, 69)
Apr. 27 9 11.33 17 16.2 6.665 6.887 98 16.9 5.1 309.0 20:13 ( 52, 64)
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It keeps 17 mag locating at the same altitude until October in the Northerm Hemisphere.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 18 38.01 -16 37.6 10.970 11.359 110 17.1 0.7 335.7 3:52 (344, 37)
Apr. 27 18 37.73 -16 33.5 10.877 11.373 117 17.1 1.0 302.8 3:42 (349, 38)
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Not yet observed in this return. It is getting brighter in the morning sky. It will reach to 15.5 mag in July and August. It bursted out and became 6 mag brighter than this ephemeris in the previous return in 1996.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 18 59.26 -19 10.9 1.434 1.960 105 17.7 23.9 78.9 3:52 (339, 33)
Apr. 27 19 10.52 -18 37.0 1.344 1.932 109 17.4 22.8 77.2 3:42 (340, 34)
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Already passed the peak and fading now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 8 58.90 20 4.1 3.081 3.429 101 17.6 6.8 106.4 20:06 ( 46, 70)
Apr. 27 9 2.52 19 48.9 3.182 3.432 95 17.7 8.4 106.8 20:13 ( 59, 65)
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It bursted out and reached to 15 mag in early January. It is getting fainter rapidly these days.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 20 8 59.09 23 24.8 1.796 2.216 100 17.7 18.9 107.4 20:06 ( 52, 73)
Apr. 27 9 8.53 22 42.7 1.898 2.243 96 18.0 20.2 108.2 20:13 ( 62, 68)
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