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New comet. It locates in the morning sky until early January. It will reach to 1 mag in late January, but it is too close to the sun at that time. It appears at dusk in March, then it slowly fades out. Southern people cannot see it until mid February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 16 44.30 40 34.9 1.041 1.105 66 7.3 107.1 117.8 5:33 (239, 30)
Dec. 28 17 40.09 33 27.7 0.989 0.953 57 6.6 118.2 126.1 5:36 (244, 22)
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Brightening very rapidly. It will be bright locating high, so good target in December. It is also observable in January in the evening sky. It will approach to the sun down to 0.1 AU in February. But it will collapse and disappear before the perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 2 1.22 14 49.7 0.799 1.580 124 10.0 83.6 263.5 19:59 ( 0, 70)
Dec. 28 1 22.46 13 35.3 0.798 1.446 108 9.6 78.0 261.9 18:53 ( 0, 69)
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It will be observable in the good condition for a long time from winter to next spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 11 44.87 46 40.7 1.554 2.086 108 10.7 16.7 102.1 5:33 (192, 78)
Dec. 28 11 54.95 46 16.6 1.496 2.074 111 10.5 13.8 103.9 5:30 (180, 79)
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Not observable. It will appear at dawn in next June at 15.5 mag, then it will be fading.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 18 49.51 -22 20.8 2.532 1.586 12 11.5 46.1 87.6 18:22 ( 68, -7)
Dec. 28 19 12.66 -22 0.0 2.547 1.592 10 11.6 46.0 85.4 18:26 ( 69, -8)
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It will be observable in good condition at 11-12 mag in early 2003 and 2003 autumn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 9 20.56 -6 10.3 2.823 3.444 121 12.7 25.5 271.6 3:24 ( 0, 49)
Dec. 28 9 7.50 -6 0.0 2.678 3.405 130 12.5 30.2 274.3 2:44 ( 0, 49)
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It was much fainter than this ephemeris, 17.4 mag on July 31 by Akimasa Nakamura. No further observations were reported, so the current brightness is uncertain.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 20 40.95 -21 23.0 2.203 1.554 38 13.2 47.5 66.7 18:22 ( 52, 13)
Dec. 28 21 2.61 -19 5.9 2.227 1.552 36 13.2 47.9 65.2 18:26 ( 55, 13)
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Appearing at dawn. Before the perihelion passage, it brightened rapidly and reached to 13 mag. However, no observations have been reported since Nov. 3.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 16 16.79 -16 11.5 2.170 1.335 24 13.4 14.5 208.6 5:33 (294, 5)
Dec. 28 16 13.09 -17 41.5 2.115 1.377 31 13.8 15.5 212.5 5:36 (300, 10)
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It was almost always at 12 mag in 2002. But this observable 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)
Dec. 21 21 1.67 -15 47.2 6.447 5.785 44 13.8 10.5 70.8 18:22 ( 52, 21)
Dec. 28 21 6.58 -15 22.2 6.520 5.783 38 13.8 11.0 70.5 18:26 ( 57, 16)
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Although it becomes low for a while in early December, it will be getting higher after mid December. It is observable in good condition at 14-15 mag until 2003 autumn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 17 37.67 20 53.2 5.867 5.211 44 14.1 14.7 68.1 5:33 (252, 10)
Dec. 28 17 44.49 21 34.1 5.852 5.217 46 14.1 15.0 65.4 5:36 (254, 15)
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It suddenly brightened in late November and reached to 14.5 mag. It will be 13.5 mag or so in February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 21 49.13 -9 57.8 2.046 1.725 57 14.3 36.0 58.4 18:22 ( 46, 33)
Dec. 28 22 3.92 -7 42.7 2.070 1.697 54 14.2 37.5 58.4 18:26 ( 51, 32)
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It brightened about 1 mag after perihelion passage and reached to 12 mag. Now already getting fainter, but still bright as 14 mag. Only a few observations have been reported despite of the brightness.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 11 51.93 10 25.4 1.552 1.906 94 14.2 13.4 99.2 5:33 (347, 65)
Dec. 28 11 57.40 10 15.6 1.522 1.958 100 14.3 9.9 93.8 5:32 ( 0, 65)
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Appearing at dawn. It is observable at 12.5 mag for long time from April to August in 2003.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 15 40.11 -16 14.5 3.370 2.595 32 14.4 27.2 106.7 5:33 (300, 12)
Dec. 28 15 52.80 -17 7.4 3.306 2.581 36 14.3 27.1 105.8 5:36 (303, 14)
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It brightened very rapidly since September and already reached to 14 mag. But it is only observable until next spring. It is not observable around the perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 4 7.22 16 32.7 1.970 2.885 153 14.7 12.8 263.6 22:07 ( 0, 72)
Dec. 28 4 1.45 16 24.3 1.981 2.845 145 14.4 10.9 265.1 21:33 ( 0, 71)
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It will be observable in good condition at 14 mag in winter.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 10 54.58 9 28.2 1.330 1.878 107 14.7 21.6 95.0 4:57 ( 0, 64)
Dec. 28 11 4.20 9 19.8 1.268 1.878 112 14.6 19.2 91.4 4:39 ( 0, 64)
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Although it will be at the peak in 2003 January and be observable in good condition, it may reach to 14.5 mag at best.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 9 36.20 17 58.4 1.032 1.815 128 14.8 15.3 80.6 3:39 ( 0, 73)
Dec. 28 9 42.79 18 20.5 0.993 1.819 134 14.8 12.3 71.8 3:18 ( 0, 73)
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Although it was expected to be 11 mag, the brightening pace is very slow in this return. It is still 15 mag. It will be 13.5 mag at best in 2003 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 13 40.36 -9 21.3 2.458 2.181 62 14.9 29.2 112.9 5:33 (319, 36)
Dec. 28 13 52.96 -10 39.2 2.383 2.177 66 14.8 28.5 112.5 5:36 (325, 37)
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It became faint after the perihelion passage. It was reported as fainter than 15 mag recently, so 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)
Dec. 21 15 0.04 40 17.3 4.260 4.127 75 15.0 6.6 102.3 5:33 (246, 49)
Dec. 28 15 3.64 40 11.5 4.232 4.159 79 15.0 5.3 92.8 5:36 (248, 54)
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New comet. It will keep 14-15 mag until the end of 2003.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 10 15.81 21 48.1 2.688 3.297 120 15.3 23.5 293.4 4:19 ( 0, 77)
Dec. 28 10 3.58 22 57.8 2.527 3.251 130 15.1 29.0 291.5 3:39 ( 0, 78)
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The brightening pace is slow and it has been around 15.5 mag since late October.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 16 34.00 42 25.4 1.169 1.221 68 15.3 38.7 157.4 5:33 (238, 32)
Dec. 28 16 42.27 38 29.1 1.201 1.210 66 15.3 34.1 158.9 5:36 (244, 35)
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It will reach to 1 mag in 2004 spring. In the Northern Hemisphere, it locates low in the evening sky until February, then it will not be observable until 2004 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 1 56.70 -40 52.4 6.055 6.222 95 15.3 6.1 299.0 19:57 ( 0, 14)
Dec. 28 1 53.76 -40 29.3 6.077 6.159 90 15.3 5.6 310.6 19:26 ( 0, 15)
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Appearing at dawn. It keeps 15 mag until spring, but it will be low for the northern observers.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 15 32.59 -23 46.4 3.744 2.963 32 15.4 9.8 170.9 5:33 (306, 8)
Dec. 28 15 33.12 -24 54.5 3.689 2.995 39 15.4 9.8 177.1 5:36 (312, 12)
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It will reach to 7 mag in 2003 autumn. In the Northern Hemisphere, it will observable only until 2003 July, when it reaches to 10 mag. After that, only southern people can observe it until 2003 December, when it fades to 9 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 15 28.77 27 22.2 4.322 3.955 61 16.1 8.9 95.8 5:33 (261, 39)
Dec. 28 15 33.34 27 19.4 4.181 3.879 65 16.0 8.5 89.1 5:36 (264, 44)
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It keeps 16 mag until 2003 June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 13 26.21 35 8.6 5.847 5.869 86 16.0 5.1 84.6 5:33 (261, 66)
Dec. 28 13 28.83 35 14.1 5.790 5.898 91 16.0 4.2 75.0 5:36 (263, 72)
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It is expected to be 1 mag in the southern sky in 2004 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 5 14.56 28 35.9 5.307 6.277 169 16.1 13.2 267.9 23:14 ( 0, 84)
Dec. 28 5 7.58 28 31.4 5.271 6.212 161 16.0 13.1 266.6 22:39 ( 0, 84)
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After the outburst in late September, it has been fading more slowly than expected, and it kept 15 mag still in mid December. However, now it is extremely diffused.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 13 35.00 1 55.2 1.898 1.782 68 16.1 24.2 102.0 5:33 (312, 46)
Dec. 28 13 45.49 1 24.2 1.882 1.842 72 16.4 21.6 100.1 5:36 (318, 49)
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It will be observable at 16-17 mag until the end of 2003.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 1 38.02 16 1.8 3.583 4.157 119 16.4 19.3 254.4 19:38 ( 0, 71)
Dec. 28 1 29.69 15 27.8 3.690 4.135 110 16.4 16.4 254.2 19:02 ( 0, 70)
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It keeps 16 mag since August unexpectedly.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 20 3.70 73 24.2 3.722 3.998 99 16.4 20.5 96.8 18:22 (160, 41)
Dec. 28 20 36.42 73 2.1 3.798 4.066 98 16.5 20.4 99.7 18:26 (160, 41)
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Appearing at dawn. It will be 14 mag from spring to summer. No observations have been reported since 2002 June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 14 35.86 -10 12.7 3.868 3.311 49 16.9 19.8 104.4 5:33 (307, 27)
Dec. 28 14 44.94 -10 45.7 3.757 3.277 54 16.8 19.5 103.4 5:36 (312, 30)
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It keeps 17 mag until April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 9 38.11 11 32.5 4.829 5.464 125 17.1 5.7 349.1 3:41 ( 0, 67)
Dec. 28 9 37.31 12 13.9 4.759 5.482 133 17.1 6.6 340.2 3:13 ( 0, 67)
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Asteroid with a cometary orbit. It will be 15.7 mag at opposition in early September in 2003.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 6 37.46 66 39.7 1.986 2.781 136 17.4 50.3 289.8 0:44 (180, 58)
Dec. 28 5 36.75 67 45.3 1.952 2.736 134 17.4 51.6 273.2 23:04 (180, 57)
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Asteroid with a cometary orbit. Fading now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 23 33.21 22 23.1 2.339 2.601 94 17.4 14.2 270.3 18:22 ( 44, 73)
Dec. 28 23 27.12 22 27.2 2.498 2.624 86 17.5 10.1 276.2 18:26 ( 62, 67)
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It is getting fainter gradually. It keeps brighter than 18 mag until March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 9 26.58 23 56.1 7.331 8.022 131 17.5 9.0 304.3 3:30 ( 0, 79)
Dec. 28 9 22.57 24 31.9 7.280 8.057 139 17.5 9.7 302.2 2:58 ( 0, 79)
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Now it is much brighter than expected, as bright as 16 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 21 5 6.42 35 42.2 2.270 3.227 163 17.5 8.8 264.2 23:06 (180, 89)
Dec. 28 5 1.69 35 33.6 2.313 3.246 157 17.7 7.8 258.7 22:34 (180, 89)
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The ephemeris says it is 17 mag at dusk in February. But it will not appear as predicted. It must have reached to 18 mag at meridian transit in the evening in 2002 autumn, but not recovered. It implies the comet is really 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)
Dec. 21 23 53.55 9 16.6 1.249 1.634 93 17.7 24.2 76.2 18:22 ( 15, 64)
Dec. 28 0 5.41 10 1.5 1.275 1.600 89 17.6 27.5 75.1 18:26 ( 26, 63)
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New comet. 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)
Dec. 21 2 14.02 -4 48.6 1.985 2.610 119 17.9 13.8 352.0 20:14 ( 0, 50)
Dec. 28 2 13.76 -3 10.5 2.051 2.599 113 17.9 14.3 3.3 19:46 ( 0, 52)
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