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The return of comet in 1661 with 340 year period. Strongly condensed with a stellar nucleus. Long tail over 3 degree is visible. It was reported as 3.0-3.5 mag by naked eye, 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. 13 23 51.93 52 27.0 0.472 0.767 47 4.1 112.4 310.4 4:03 (221, 23)
Apr. 20 22 25.37 59 27.1 0.428 0.882 61 4.5 125.8 291.1 3:52 (218, 39)
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New comet. It will reach to 3 mag at the perihelion passage on Apr. 17. If it does not vanish at that time, it will appear at dawn as 11 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 13 1 44.99 3 2.6 1.186 0.235 7 7.6 114.3 45.8 19:58 (108,-17)
Apr. 20 1 21.91 16 18.5 0.911 0.170 8 5.6 166.9 284.4 3:52 (242,-10)
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New comet. Though locating low now, it is strongly condensed and easy to see. It will be 6.5 mag in late April. In the Northern Hemisphere, it is observable only until mid April being very low in the morning sky. After the perihelion passage, it will be observable in the Southern Hemisphere, but it locates very low in the evening sky. It will locate high after August, but will be fainter than 15 mag at that time. It was 5.5 mag on Apr. 12, much 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. 13 0 28.85 30 8.4 1.189 0.507 24 6.9 146.7 71.6 4:03 (237, 6)
Apr. 20 1 50.34 32 55.8 1.183 0.445 21 6.3 151.2 90.0 3:52 (226, -2)
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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 observable all through a night 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. 13 8 35.23 80 19.9 0.568 1.101 84 9.9 169.7 164.8 19:58 (177, 46)
Apr. 20 9 16.04 59 52.8 0.558 1.154 90 10.1 177.7 174.5 20:06 (167, 65)
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It suddenly bursted out in late January and reached to 2.5 mag. Then it is fading rapidly, and now it is 9.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 13 18 59.47 11 29.3 1.260 1.668 94 10.1 49.1 337.1 4:03 (313, 58)
Apr. 20 18 49.27 16 36.7 1.283 1.775 101 10.6 48.3 331.4 3:52 (317, 66)
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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. 13 19 23.08 36 53.3 1.373 1.628 84 10.3 74.0 4.6 4:03 (257, 66)
Apr. 20 19 25.65 45 17.9 1.404 1.672 86 10.5 69.9 1.9 3:52 (235, 68)
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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. 13 0 57.57 -3 21.8 2.513 1.559 13 12.1 44.3 75.0 4:03 (259,-20)
Apr. 20 1 17.27 -2 3.1 2.541 1.598 15 12.0 42.9 75.2 3:52 (258,-20)
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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. 13 0 27.19 66 51.0 3.963 3.548 58 12.9 18.9 31.4 4:03 (205, 26)
Apr. 20 0 39.65 68 46.9 3.965 3.545 58 12.9 19.8 30.9 3:52 (203, 28)
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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. 13 20 58.65 -18 50.2 6.091 5.845 71 13.7 7.3 70.5 4:03 (308, 16)
Apr. 20 21 1.82 -18 34.0 5.983 5.843 77 13.6 6.4 69.8 3:52 (310, 19)
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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. 13 19 17.12 -1 7.2 0.823 1.319 92 14.5 55.3 101.4 4:03 (319, 46)
Apr. 20 19 42.76 -2 30.7 0.778 1.296 92 14.2 57.0 103.1 3:52 (317, 43)
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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. 13 20 30.17 17 25.1 3.143 2.986 71 14.7 9.2 311.6 4:03 (281, 46)
Apr. 20 20 26.09 18 9.2 2.992 2.955 78 14.6 11.8 303.2 3:52 (284, 50)
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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. 13 11 35.80 49 1.5 1.920 2.542 117 14.9 14.7 205.9 22:09 (180, 76)
Apr. 20 11 32.14 47 24.3 2.019 2.591 113 15.1 15.0 195.6 21:38 (180, 78)
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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. 13 11 4.54 20 24.8 2.504 3.288 134 15.0 6.5 262.4 21:38 ( 0, 75)
Apr. 20 11 1.79 20 14.6 2.553 3.266 127 15.0 5.0 246.2 21:08 ( 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. 13 9 54.90 71 12.7 4.935 5.083 92 15.0 11.1 179.6 20:29 (180, 54)
Apr. 20 9 55.78 69 53.5 5.007 5.097 89 15.1 11.6 174.2 20:06 (179, 55)
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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. 13 10 9.52 -6 30.1 4.428 5.149 131 15.1 16.3 297.9 20:43 ( 0, 49)
Apr. 20 10 3.11 -5 37.5 4.474 5.098 123 15.1 14.8 299.7 20:09 ( 0, 49)
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It will be 15 mag in spring and summer.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 13 17 7.72 5 28.0 4.752 5.359 122 15.2 12.4 345.5 3:44 ( 0, 60)
Apr. 20 17 5.95 6 52.3 4.667 5.345 128 15.1 12.8 340.0 3:15 ( 0, 62)
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It bursted out in early February and reached to 13.5 mag. Then it did not become so fainter. It must be brighter than this ephemeris. But the condition is worst. It always locates very low 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. 13 3 11.89 19 0.6 2.167 1.364 27 15.2 53.4 72.7 19:58 (107, 9)
Apr. 20 3 36.71 20 41.8 2.242 1.423 27 15.6 50.8 74.8 20:06 (110, 8)
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It will be 10.5 mag in 2003 spring. It was a bit 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. 13 6 7.75 26 48.2 3.070 2.866 68 15.4 16.3 93.8 19:58 ( 93, 48)
Apr. 20 6 16.59 26 39.8 3.132 2.840 64 15.3 17.6 94.2 20:06 ( 96, 42)
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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. 13 11 46.65 8 25.7 1.768 2.684 150 15.5 12.3 292.5 22:20 ( 0, 63)
Apr. 20 11 41.69 8 54.5 1.777 2.642 142 15.4 10.1 290.1 21:47 ( 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. 13 16 1.64 -38 23.0 2.405 3.185 134 15.7 6.8 214.8 2:38 ( 0, 17)
Apr. 20 15 58.64 -39 0.3 2.290 3.130 140 15.5 7.9 230.5 2:08 ( 0, 16)
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Fading rapidly after February. It will be fainter than 16 mag in May when it becomes low.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 13 5 3.95 17 20.3 2.431 2.010 53 15.7 34.8 76.9 19:58 ( 91, 30)
Apr. 20 5 20.35 18 10.2 2.546 2.067 51 15.9 33.6 78.8 20:06 ( 94, 27)
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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. 13 10 31.75 26 28.2 1.786 2.501 125 15.9 13.6 205.1 21:05 ( 0, 81)
Apr. 20 10 29.53 24 58.7 1.837 2.485 119 15.9 13.5 192.1 20:36 ( 0, 80)
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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. 13 10 26.51 25 17.5 0.923 1.707 124 16.0 23.6 137.6 21:01 ( 0, 80)
Apr. 20 10 34.98 23 15.2 1.002 1.746 120 16.2 24.5 135.4 20:42 ( 0, 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. 13 15 57.16 -16 39.6 3.012 3.853 142 16.1 5.4 277.5 2:34 ( 0, 38)
Apr. 20 15 54.16 -16 33.9 2.961 3.861 149 16.1 6.9 277.4 2:03 ( 0, 38)
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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. 13 12 16.53 -13 8.6 4.585 5.551 162 16.8 15.2 275.9 22:49 ( 0, 42)
Apr. 20 12 9.56 -12 57.2 4.672 5.600 155 16.8 14.1 276.8 22:15 ( 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. 13 9 16.37 16 24.4 6.361 6.825 113 16.8 7.7 303.4 19:58 ( 6, 71)
Apr. 20 9 13.56 16 52.1 6.511 6.856 105 16.8 6.3 305.6 20:06 ( 32, 69)
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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. 13 18 38.00 -16 42.2 11.068 11.346 103 17.1 0.7 26.1 4:03 (339, 36)
Apr. 20 18 38.01 -16 37.6 10.970 11.359 110 17.1 0.7 335.7 3:52 (344, 37)
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It bursted out and reached to 15 mag in early January. It is getting fainter rather 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. 13 8 50.23 24 1.8 1.697 2.189 105 17.2 17.4 106.4 19:58 ( 36, 77)
Apr. 20 8 59.09 23 24.8 1.796 2.216 100 17.4 18.9 107.4 20:06 ( 52, 73)
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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. 13 8 56.10 20 15.6 2.983 3.426 107 17.6 4.9 105.9 19:58 ( 25, 74)
Apr. 20 8 58.90 20 4.1 3.081 3.429 101 17.6 6.8 106.4 20:06 ( 46, 70)
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