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It reached to 5.5 mag in early December. It will reach to 4 mag locating high in the evening sky from mid December to the end of January. In the Northern Hemisphere, it keeps observable in good condition for a long time while the comet is bright enough visible visually until 2005 October when it becomes faint as 14 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 4 50.07 -25 35.3 0.587 1.446 132 5.6 36.2 324.9 23:54 ( 0, 30)
Dec. 11 4 38.05 -21 8.0 0.508 1.391 135 5.1 54.5 330.9 23:14 ( 0, 34)
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In the Southern Hemisphere, it keeps observable in good condition until April when it reaches to 13 mag. In the Northern Hemisphere, it will become unobservable soon, however, it will appear at dusk again in mid January at 9 mag, then it will keep observable until the end of March 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)
Dec. 4 11 11.29 -45 5.9 1.303 1.331 69 7.3 74.6 219.6 5:22 (350, 9)
Dec. 11 10 31.20 -51 47.5 1.220 1.404 78 7.4 86.8 229.1 5:12 ( 0, 3)
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It will be fading gradually after this, but it keeps 11 mag until the end of January. It will be visible visually until May when it becomes too 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)
Dec. 4 3 6.21 11 41.3 1.097 2.032 154 10.5 5.3 221.7 22:11 ( 0, 67)
Dec. 11 3 5.17 11 19.0 1.142 2.042 147 10.6 2.6 198.6 21:43 ( 0, 66)
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It will be fading gradually after this, but it keeps 11 mag until mid January. In the Northern Hemisphere, it keeps observable until July 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)
Dec. 4 23 38.25 40 17.4 1.431 2.047 114 10.6 16.3 308.4 18:43 (180, 85)
Dec. 11 23 31.92 41 26.5 1.511 2.047 108 10.7 12.5 321.2 18:19 (166, 83)
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It is brightening, 13 mag in mid November, but a bit fainter than this ephemeris. Very diffused visually. It will be visible visually at 11 mag from December to January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 10 46.56 13 18.5 1.049 1.490 94 11.3 41.1 95.7 5:22 (340, 67)
Dec. 11 11 5.76 12 52.2 1.010 1.490 96 11.2 39.3 94.7 5:27 (348, 67)
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The brightening evolution has been slower than usual. But finally it comes to be visible visually. In the Northern Hemisphere, it keeps observable until 2005 spring when it reaches to 8 mag. Now it locates at the same altitude both in the evening and morning, but the altitude at dusk will be lower and lower, and becomes lower than 10 deg in January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 16 46.40 50 25.5 2.232 2.155 72 12.1 39.8 125.5 18:18 (136, 23)
Dec. 11 17 9.43 47 38.5 2.170 2.064 70 11.9 40.5 126.6 5:27 (226, 22)
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It is a bit brighter visually than this ephemeris, around 12.5 mag. It keeps observable at 12-13 mag in the evening sky until May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 2 32.28 12 7.1 1.244 2.141 147 13.2 12.0 300.0 21:37 ( 0, 67)
Dec. 11 2 28.05 12 52.3 1.260 2.109 139 13.1 10.0 313.7 21:05 ( 0, 68)
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It was 11-12.5 mag in mid November, but diffused. It keeps observable for a long time after this in the Northern Hemisphere. It is also visible at midnight or dawn, but low.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 19 49.60 66 12.9 2.861 3.109 95 13.2 29.2 111.5 18:18 (153, 47)
Dec. 11 20 19.40 64 54.0 2.951 3.189 94 13.4 28.2 113.7 18:19 (151, 48)
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It had been bright at 12-13 mag since September, however, it seems to be faint in late November.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 23 55.94 9 5.7 5.310 5.728 110 13.3 1.3 120.9 19:01 ( 0, 64)
Dec. 11 23 56.75 9 2.5 5.418 5.728 103 13.4 2.3 95.2 18:35 ( 0, 64)
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The condition of this return is bad. It is not observable around the perihelion passage. It will appear at dawn in 2005 July at 14.5 mag, then it will be fading after that.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 17 20.50 -19 6.0 2.578 1.614 9 13.8 43.3 99.4 18:18 ( 73, -9)
Dec. 11 17 42.00 -19 50.4 2.554 1.582 7 13.4 44.4 97.4 18:19 ( 73,-11)
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It bursted out in late November and reached to 13.8 mag. It is strongly condensed.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 8 8.26 40 35.1 1.891 2.665 133 13.9 48.9 319.5 3:17 (180, 85)
Dec. 11 7 45.45 44 55.9 1.818 2.664 142 13.8 54.3 313.3 2:27 (180, 80)
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It will be getting fainter gradually until 2005 June when it becomes 17 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 11 36.02 -16 27.1 3.741 3.558 71 13.9 5.3 231.9 5:22 (336, 35)
Dec. 11 11 33.53 -16 48.1 3.697 3.640 78 14.0 6.6 246.1 5:27 (346, 37)
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It will be fading slowly until 2005 August when it becomes low in the evening sky at 16.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 0 26.01 43 12.3 1.289 2.010 123 14.0 14.3 299.1 19:31 (180, 82)
Dec. 11 0 19.53 43 58.6 1.339 1.995 117 14.1 10.0 310.2 18:57 (180, 81)
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It tends to become brightest after the perihelion passage. It was 16.5 mag in mid November, fainter than expected by about 1-1.5 mag. If it brightens as expected, it will reach to 14 mag in February at the opposition.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 10 24.36 21 5.7 2.330 2.709 101 14.7 12.8 72.5 5:22 (350, 76)
Dec. 11 10 29.97 21 36.5 2.252 2.718 107 14.6 11.3 63.9 5:10 ( 0, 77)
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Diffused, but still bright as 14 mag. It keeps observable until May 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)
Dec. 4 11 41.58 39 20.6 2.963 3.176 93 14.7 2.6 51.2 5:22 (250, 72)
Dec. 11 11 42.17 39 35.7 2.940 3.246 99 14.8 2.7 357.2 5:27 (243, 78)
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It was visible visually around 13.5 mag in October, but became faint rapidly in November. It keeps observable until it becomes fainter than 18 mag in March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 0 52.18 2 14.8 1.002 1.727 120 14.8 22.5 35.5 19:58 ( 0, 57)
Dec. 11 0 58.99 4 22.5 1.063 1.738 116 15.0 24.2 41.4 19:37 ( 0, 60)
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Almost stellar. It keeps observable in good condition until April 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)
Dec. 4 23 20.76 15 29.5 0.577 1.260 104 14.8 61.9 23.4 18:27 ( 0, 71)
Dec. 11 23 33.48 21 38.6 0.631 1.281 102 15.1 55.8 28.7 18:19 ( 7, 77)
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It has been brightening more rapidly than expected, and already reached to 15.5 mag. It may be reach to 13 mag in 2006.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 5 52.59 47 17.2 5.467 6.349 151 15.2 6.5 302.6 1:01 (180, 78)
Dec. 11 5 48.67 47 39.7 5.419 6.320 154 15.2 6.6 296.5 0:30 (180, 77)
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It keeps observable at 15.5 mag 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. 4 3 44.11 37 4.3 0.679 1.641 160 15.2 66.9 252.8 22:46 (180, 88)
Dec. 11 3 6.35 34 2.8 0.636 1.569 150 15.2 73.6 245.1 21:41 ( 0, 89)
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Almost stellar. It keeps 15-16 mag in the evening sky until May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 0 44.31 -26 3.6 1.096 1.650 104 15.4 16.7 24.5 19:50 ( 0, 29)
Dec. 11 0 48.90 -24 8.3 1.108 1.610 100 15.4 20.8 31.6 19:27 ( 0, 31)
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It will be observable in good conditon at 15.5 mag in winter. In its last return in 1997, it burst out after the perihelion passage and became extremely bright, reached to 11 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 8 56.27 15 36.8 1.251 1.942 120 15.6 16.9 52.0 4:04 ( 0, 71)
Dec. 11 9 2.05 16 57.8 1.192 1.944 126 15.5 16.4 39.2 3:42 ( 0, 72)
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It will reach to 9 mag in 2006 spring. It has been brightening well as expected. In this season, it keeps observable until March when it becomes 15.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 5 20.34 -16 7.1 4.353 5.152 140 15.8 16.8 244.9 0:29 ( 0, 39)
Dec. 11 5 12.75 -16 53.5 4.295 5.089 140 15.7 17.0 248.9 23:49 ( 0, 38)
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It was observed as 16.5 mag on Oct. 6, fainter than this ephemeris by 1.5 mag. After this, it keeps observable while it will be fading gradually until it becomes fainter than 18 mag in April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 11 39.99 -10 29.3 2.652 2.542 72 16.2 13.6 124.3 5:22 (332, 40)
Dec. 11 11 44.84 -11 20.4 2.611 2.599 78 16.3 11.5 127.1 5:27 (341, 42)
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It will be getting fainter and lower until March, when it becomes 17.5 mag and too low.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 23 35.37 2 52.6 2.142 2.556 103 16.3 12.5 62.7 18:41 ( 0, 58)
Dec. 11 23 41.05 3 35.3 2.221 2.549 97 16.3 14.6 63.8 18:19 ( 0, 59)
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It will be fainter than 18 mag in January. But the total magnitude seems to be brighter than this ephemeris because it is very diffused.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 1 36.48 8 15.5 1.826 2.602 133 16.3 2.6 299.3 20:42 ( 0, 63)
Dec. 11 1 36.07 8 27.4 1.943 2.646 126 16.6 2.2 12.8 20:14 ( 0, 63)
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It will be as faint as 17.5 mag in March when it becomes low in the evening western sky.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 0 52.26 -3 45.4 3.240 3.805 118 16.3 3.3 342.3 19:58 ( 0, 51)
Dec. 11 0 52.20 -3 20.9 3.355 3.824 111 16.4 3.9 11.3 19:30 ( 0, 52)
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It is observable at 16.5 mag in good condition until February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 5 59.72 28 9.6 2.002 2.954 161 16.6 9.8 266.4 1:08 ( 0, 83)
Dec. 11 5 54.22 28 3.7 1.970 2.943 169 16.5 11.0 264.6 0:36 ( 0, 83)
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It will be too low in the evening sky at 17.5 mag in early February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 22 23.47 4 38.2 5.555 5.597 87 16.5 3.6 215.0 18:18 ( 23, 58)
Dec. 11 22 22.82 4 20.0 5.732 5.648 80 16.7 2.4 199.1 18:19 ( 35, 54)
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It was 17.8 mag on Oct. 21, brighening well as expected. We can observe it in good condition while it is brightening, then the comet will reach to 9 mag in next spring and summer. It may become a naked-eye object due to the Deep Impact mission on July 4.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 11 55.99 11 46.5 2.446 2.439 77 17.1 22.3 104.7 5:22 (309, 57)
Dec. 11 12 6.17 11 8.3 2.320 2.398 82 16.8 21.8 103.8 5:27 (318, 60)
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It is observable at 17 mag in good condition until January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 0 51.27 9 25.1 2.525 3.175 123 17.0 2.2 139.0 19:57 ( 0, 64)
Dec. 11 0 52.45 9 16.6 2.601 3.165 116 17.1 3.6 101.8 19:30 ( 0, 64)
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It keeps observable at 18 mag in good condition until January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 6 46.05 11 32.0 3.341 4.214 148 17.7 18.7 237.5 1:55 ( 0, 67)
Dec. 11 6 38.33 10 22.8 3.342 4.261 156 17.7 19.2 239.8 1:20 ( 0, 65)
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Asteroid with a cometary orbit. It will become fainter than 18 mag soon. It will be 17.5 mag again in 2006 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 3 40.89 14 12.7 2.187 3.144 163 17.7 13.1 283.9 22:45 ( 0, 69)
Dec. 11 3 35.00 14 36.0 2.190 3.113 155 17.8 12.2 286.9 22:12 ( 0, 70)
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It keeps 18 mag until 2005 spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Dec. 4 14 13.38 41 38.7 6.757 6.531 72 17.8 3.9 31.6 5:22 (243, 44)
Dec. 11 14 14.46 42 4.8 6.704 6.554 77 17.8 4.4 18.7 5:27 (244, 49)
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It will reach to 16.7 mag at best in early 2006. Because it moves in the northern sky, it keeps observable for a long time 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)
Dec. 4 5 30.08 46 6.5 5.062 5.966 154 17.9 8.6 303.9 0:39 (180, 79)
Dec. 11 5 25.10 46 37.9 5.023 5.937 156 17.8 8.6 299.1 0:07 (180, 78)
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