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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. 28 17 39.94 33 29.2 0.991 0.955 57 6.6 117.8 126.0 3:00 (254,-44)
Jan. 4 18 29.31 24 25.6 0.981 0.794 47 5.9 122.4 133.2 3:06 (268,-44)
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Still brightening very rapidly. It is observable until early February in the Northern Hemisphere, until mid January in Southern Hemisphere. 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. 28 1 22.47 13 35.3 0.799 1.446 108 8.3 78.0 261.9 21:03 (142, 32)
Jan. 4 0 47.61 12 16.7 0.817 1.306 92 7.9 69.1 260.9 21:03 (127, 24)
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It will be observable in the good condition for a long time from winter to next spring. Strongly condensed and easy to see.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 28 11 54.95 46 16.6 1.496 2.074 111 10.5 13.8 103.9 3:00 (205, 2)
Jan. 4 12 2.87 45 53.8 1.443 2.065 115 10.4 10.6 107.5 3:06 (201, 4)
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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. 28 19 12.66 -22 0.0 2.547 1.592 10 11.6 46.0 85.4 21:03 ( 52,-12)
Jan. 4 19 35.58 -21 27.1 2.564 1.600 8 11.6 45.7 83.2 21:03 ( 51,-13)
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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. 28 9 7.50 -6 0.0 2.678 3.405 130 12.5 30.2 274.3 2:44 (180, 61)
Jan. 4 8 52.29 -5 38.0 2.553 3.366 140 12.3 34.9 276.7 2:01 (180, 61)
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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. 28 21 2.61 -19 5.9 2.227 1.552 36 13.2 47.9 65.2 21:03 ( 71, 6)
Jan. 4 21 23.87 -16 40.5 2.255 1.555 34 13.2 48.2 63.9 21:03 ( 72, 3)
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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. 28 21 6.58 -15 22.2 6.520 5.783 38 13.8 11.0 70.5 21:03 ( 74, 4)
Jan. 4 21 11.68 -14 55.9 6.585 5.782 32 13.8 11.4 70.3 21:03 ( 71, -1)
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Before the perihelion passage, it brightened rapidly and reached to 13 mag. Now appearing at dawn. Yuuji Ohshima observed it on Dec. 27, then it was 12.5 mag, 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)
Dec. 28 16 13.09 -17 41.5 2.115 1.377 31 13.8 15.5 212.5 3:00 (291, 0)
Jan. 4 16 8.52 -19 14.5 2.041 1.425 39 14.2 17.1 217.3 3:06 (287, 9)
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It was reported as about 12.5 mag visually and by photos in late December, 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)
Dec. 28 22 3.92 -7 42.7 2.070 1.697 54 14.2 37.5 58.4 21:03 ( 89, 11)
Jan. 4 22 19.21 -5 22.3 2.093 1.672 51 14.1 38.9 58.4 21:03 ( 89, 8)
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Getting higher in the morning sky. 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. 28 17 44.49 21 34.1 5.852 5.217 46 14.1 15.0 65.4 3:00 (270,-40)
Jan. 4 17 51.32 22 20.3 5.831 5.223 47 14.1 15.2 62.6 3:06 (266,-35)
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Appearing at dawn, and observed as bright as expected. 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. 28 15 52.80 -17 7.4 3.306 2.581 36 14.3 27.1 105.8 3:00 (288, 4)
Jan. 4 16 5.54 -17 57.0 3.237 2.568 40 14.3 26.9 104.8 3:06 (286, 9)
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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. 28 11 57.40 10 15.6 1.522 1.958 100 14.3 9.9 93.8 3:00 (226, 32)
Jan. 4 12 1.23 10 16.3 1.493 2.010 106 14.4 6.3 82.2 3:06 (219, 36)
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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. 28 4 1.45 16 24.3 1.981 2.845 145 14.4 10.9 265.1 21:33 (180, 39)
Jan. 4 3 56.71 16 19.8 2.003 2.805 137 14.3 8.5 267.7 21:03 (180, 39)
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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. 28 11 4.20 9 19.8 1.268 1.878 112 14.6 19.2 91.4 3:00 (213, 40)
Jan. 4 11 12.65 9 22.1 1.210 1.880 117 14.5 16.6 86.0 3:06 (205, 42)
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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 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 28 13 52.96 -10 39.2 2.383 2.177 66 14.8 28.5 112.5 3:00 (266, 25)
Jan. 4 14 5.34 -11 53.6 2.306 2.173 69 14.7 27.7 112.1 3:06 (264, 30)
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Although it will be at the peak in 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. 28 9 42.79 18 20.5 0.993 1.819 134 14.8 12.3 71.8 3:00 (185, 37)
Jan. 4 9 47.69 18 52.1 0.960 1.827 140 14.8 9.7 57.7 2:55 (180, 36)
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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. 28 10 3.57 22 57.9 2.524 3.249 130 15.1 29.0 291.5 3:00 (191, 31)
Jan. 4 9 48.34 24 15.3 2.380 3.203 140 14.9 34.8 289.3 2:57 (180, 31)
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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. 28 15 3.64 40 11.5 4.232 4.159 79 15.0 5.3 92.8 3:00 (233,-18)
Jan. 4 15 6.54 40 13.4 4.201 4.192 82 15.1 4.2 78.7 3:06 (230,-13)
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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. 28 1 53.76 -40 29.3 6.077 6.159 90 15.3 5.6 310.6 21:03 ( 67, 70)
Jan. 4 1 51.50 -40 1.7 6.099 6.096 85 15.3 5.3 323.4 21:03 ( 69, 65)
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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. 28 16 42.27 38 29.1 1.201 1.210 66 15.3 34.1 158.9 3:00 (244,-35)
Jan. 4 16 48.75 34 58.3 1.226 1.210 65 15.4 30.2 160.6 3:06 (245,-28)
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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. 28 15 33.12 -24 54.5 3.689 2.995 39 15.4 9.8 177.1 3:00 (292, 12)
Jan. 4 15 33.05 -26 3.8 3.623 3.028 46 15.4 10.0 184.7 3:06 (289, 19)
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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. 28 15 33.34 27 19.4 4.181 3.879 65 16.0 8.5 89.1 3:00 (248,-17)
Jan. 4 15 37.65 27 24.1 4.033 3.804 69 15.8 8.0 81.1 3:06 (244,-11)
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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. 28 5 7.58 28 31.4 5.271 6.212 161 16.0 13.1 266.6 22:39 (180, 26)
Jan. 4 5 0.77 28 24.9 5.253 6.147 153 16.0 12.6 265.2 22:05 (180, 27)
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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. 28 13 28.83 35 14.1 5.790 5.898 91 16.0 4.2 75.0 3:00 (226, 0)
Jan. 4 13 30.86 35 23.7 5.733 5.926 96 16.0 3.4 61.2 3:06 (221, 4)
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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. 28 1 29.69 15 27.8 3.690 4.135 110 16.4 16.4 254.2 21:03 (145, 32)
Jan. 4 1 22.70 14 59.1 3.804 4.114 101 16.4 13.6 254.3 21:03 (137, 28)
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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. 28 13 45.49 1 24.2 1.882 1.842 72 16.4 21.6 100.1 3:00 (254, 19)
Jan. 4 13 54.83 1 2.0 1.861 1.901 77 16.7 18.9 97.7 3:06 (250, 24)
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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. 28 20 36.42 73 2.1 3.798 4.066 98 16.5 20.4 99.7 21:03 (159,-37)
Jan. 4 21 7.77 72 33.7 3.882 4.133 97 16.6 20.1 102.2 21:03 (159,-37)
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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. 28 14 44.94 -10 45.7 3.757 3.277 54 16.8 19.5 103.4 3:00 (273, 14)
Jan. 4 14 53.90 -11 15.7 3.641 3.244 58 16.6 19.1 102.3 3:06 (270, 20)
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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. 28 9 37.31 12 13.9 4.759 5.482 133 17.1 6.6 340.2 3:00 (184, 43)
Jan. 4 9 35.98 12 59.3 4.700 5.500 141 17.1 7.5 333.9 2:44 (180, 42)
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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. 28 5 36.75 67 45.3 1.952 2.736 134 17.4 51.6 273.2 23:04 (180,-13)
Jan. 4 4 34.57 67 4.8 1.948 2.691 130 17.4 50.7 256.0 21:35 (180,-12)
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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. 28 0 5.41 10 1.5 1.275 1.600 89 17.6 27.5 75.1 21:03 (123, 24)
Jan. 4 0 18.75 10 55.1 1.301 1.568 85 17.5 30.7 74.4 21:03 (121, 21)
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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. 28 9 22.57 24 31.9 7.280 8.057 139 17.5 9.7 302.2 2:58 (180, 31)
Jan. 4 9 18.14 25 8.4 7.243 8.092 147 17.5 10.4 300.2 2:26 (180, 30)
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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. 28 23 27.12 22 27.2 2.498 2.624 86 17.5 10.1 276.2 21:03 (125, 9)
Jan. 4 23 22.92 22 38.5 2.656 2.650 78 17.7 7.0 287.7 21:03 (121, 3)
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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. 28 5 1.69 35 33.6 2.313 3.246 157 17.7 7.8 258.7 22:34 (180, 19)
Jan. 4 4 57.74 35 21.1 2.369 3.265 151 17.8 6.4 251.7 22:02 (180, 20)
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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. 28 2 13.76 -3 10.5 2.051 2.599 113 17.9 14.3 3.3 21:03 (147, 53)
Jan. 4 2 14.78 -1 29.2 2.122 2.589 107 18.0 15.1 13.5 21:03 (139, 49)
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