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It keeps brighter than 4.0 mag locating high in the evening sky until late 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)
Jan. 8 3 35.00 23 43.6 0.349 1.234 129 3.6 131.8 346.3 21:02 (169, 29)
Jan. 15 3 19.77 37 58.0 0.370 1.215 120 3.7 116.1 348.2 20:58 (164, 14)
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In the Southern Hemisphere, it keeps observable in good condition until April when it reaches to 13 mag. Now it is apearing at dusk also in the Northern Hemisphere, 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)
Jan. 8 5 18.92 -53 56.1 1.258 1.722 99 8.2 87.1 305.6 22:02 ( 0, 72)
Jan. 15 4 34.88 -47 35.8 1.370 1.805 98 8.5 73.9 317.7 20:58 ( 5, 78)
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In the Northern Hemisphere, it keeps observable until 2005 spring when it reaches to 8 mag. The altitude will be constant until late February, and it will not be higher.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 18 29.81 35 52.7 1.975 1.697 59 11.1 40.4 129.1 3:11 (251,-44)
Jan. 15 18 47.38 32 53.7 1.934 1.605 55 10.9 40.1 129.5 3:19 (253,-39)
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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)
Jan. 8 3 14.81 11 30.2 1.407 2.095 121 11.2 11.1 75.3 21:02 (160, 41)
Jan. 15 3 20.51 11 52.9 1.489 2.112 115 11.3 13.7 74.5 20:58 (155, 40)
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Very diffused and widely spreading visually. It keeps bright at 11 mag in January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 12 11.29 12 30.9 0.881 1.526 109 11.2 28.2 85.3 3:11 (214, 36)
Jan. 15 12 23.79 12 52.9 0.857 1.544 113 11.3 24.4 80.5 3:19 (207, 38)
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It will be fading gradually after this. 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)
Jan. 8 23 32.02 46 19.5 1.844 2.082 89 11.4 13.4 28.0 21:02 (138,-13)
Jan. 15 23 37.18 47 45.3 1.925 2.099 85 11.6 15.4 34.3 20:58 (137,-17)
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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)
Jan. 8 19 14.38 -20 57.3 2.464 1.481 1 12.2 48.2 88.8 3:11 (314,-19)
Jan. 15 19 38.57 -20 42.7 2.446 1.464 2 12.0 48.8 86.6 3:19 (312,-17)
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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)
Jan. 8 2 28.43 16 54.1 1.401 1.995 112 12.8 12.7 37.2 21:02 (150, 32)
Jan. 15 2 33.06 18 6.9 1.447 1.971 106 12.7 15.5 46.4 20:58 (146, 29)
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It had been around 6-6.5 mag from Dec. 16 to 20. After appearing at dusk, Ken-ichi Kadota observed it as 10.1 mag on Dec. 26 and 10.9 mag on Dec. 30. It will be observable while fading after this. But it may fade out must faster than expected.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 22 5.73 -23 35.6 0.844 0.620 38 13.1 165.9 91.6 21:02 ( 70, 13)
Jan. 15 23 23.84 -22 50.4 0.888 0.795 49 14.2 140.1 84.1 20:58 ( 77, 23)
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Although it brightened to 11 mag in mid December, it became faint as 13 mag in late December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 0 5.09 9 23.9 5.865 5.730 77 13.5 6.6 74.9 21:02 (114, 16)
Jan. 15 0 8.28 9 37.4 5.974 5.731 71 13.6 7.5 73.3 20:58 (111, 12)
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Completely diffused visually. 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)
Jan. 8 21 53.02 59 42.4 3.398 3.504 87 13.8 23.1 115.0 21:02 (144,-32)
Jan. 15 22 11.59 58 36.8 3.527 3.581 85 14.0 21.8 113.7 20:58 (142,-32)
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It bursted out in late November and reached to 13.5 mag. Now it is visible visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 5 13.44 56 7.0 1.856 2.679 139 13.9 50.1 275.9 21:57 (180, -1)
Jan. 15 4 34.20 56 8.9 1.946 2.688 130 14.0 43.4 265.9 20:58 (179, -1)
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It will be getting fainter gradually until 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)
Jan. 8 11 13.75 -17 17.4 3.516 3.960 109 14.2 14.2 273.8 3:11 (217, 69)
Jan. 15 11 6.37 -17 6.4 3.482 4.038 117 14.3 16.2 277.8 3:19 (188, 72)
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It tends to become brightest after the perihelion passage. It was 16 mag in mid December, 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)
Jan. 8 10 41.35 25 1.5 1.991 2.761 133 14.3 9.5 4.6 3:11 (185, 30)
Jan. 15 10 41.09 26 10.0 1.946 2.773 140 14.3 10.2 350.3 3:04 (180, 29)
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It will be fading slowly until 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)
Jan. 8 0 22.15 47 21.7 1.567 1.956 97 14.5 12.1 43.8 21:02 (145, -7)
Jan. 15 0 29.08 48 25.9 1.625 1.952 93 14.6 15.0 49.8 20:58 (143,-10)
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It has been brightening more rapidly than expected. 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)
Jan. 8 5 32.13 48 26.8 5.364 6.208 146 15.0 5.4 274.9 22:19 (180, 7)
Jan. 15 5 28.60 48 28.1 5.383 6.180 141 15.0 4.7 268.9 21:48 (180, 7)
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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)
Jan. 8 1 25.04 -13 59.0 1.155 1.472 86 15.2 35.8 45.1 21:02 (109, 47)
Jan. 15 1 37.93 -10 57.1 1.167 1.445 83 15.1 39.1 47.0 20:58 (110, 43)
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Brighening well as expected. We can observe it in good condition while it is brightening, then the comet will reach to 9 mag in 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)
Jan. 8 12 44.30 9 16.9 1.826 2.233 100 15.5 18.8 97.6 3:11 (224, 34)
Jan. 15 12 52.86 9 2.6 1.708 2.192 105 15.2 17.6 95.1 3:19 (217, 38)
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Diffused, and fading rapidly. It was around 16 mag in mid December, fainter than this ephemeris by 1 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 11 30.53 41 27.9 2.876 3.523 124 15.3 10.4 296.6 3:11 (193, 12)
Jan. 15 11 24.06 41 59.5 2.877 3.592 130 15.4 12.2 290.9 3:19 (185, 13)
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It will be observable in good conditon at 15.5 mag until late January. In its last return in 1997, it burst out after the perihelion passage and became extremely bright, reached to 11 mag. However, it is faint in this return.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 9 9.62 24 54.3 1.037 1.969 154 15.4 20.4 352.7 2:00 (180, 30)
Jan. 15 9 7.57 27 17.6 1.024 1.979 160 15.4 21.1 345.9 1:31 (180, 28)
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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 at 15.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 4 41.95 -18 37.0 4.215 4.838 124 15.5 14.6 265.0 21:29 (180, 74)
Jan. 15 4 35.06 -18 41.8 4.228 4.774 118 15.4 13.4 269.4 20:58 (177, 74)
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It will be at opposition and reach to 13.5 mag in March and April. No observations have been reported since 2004 August. So it is uncertain if the comet is brightening as expected.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 15 41.27 -27 26.2 2.786 2.263 48 15.8 8.7 195.1 3:11 (288, 23)
Jan. 15 15 39.46 -28 27.7 2.623 2.229 56 15.6 10.3 207.0 3:19 (285, 31)
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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)
Jan. 8 1 15.15 15 33.2 0.647 1.227 95 15.7 51.2 223.1 21:02 (132, 24)
Jan. 15 1 0.19 11 25.1 0.670 1.125 83 15.8 43.6 219.7 20:58 (121, 21)
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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)
Jan. 8 0 39.69 38 48.5 0.896 1.408 96 15.9 42.3 50.3 21:02 (141, 1)
Jan. 15 0 59.99 41 42.9 0.971 1.448 95 16.1 40.8 55.3 20:58 (143, -2)
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It will be observable in good condition at 16 mag until March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 7 53.37 60 35.6 1.194 2.055 141 16.0 3.1 299.5 0:44 (180, -6)
Jan. 15 7 50.45 60 34.3 1.170 2.029 140 15.9 3.8 239.1 0:14 (180, -6)
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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)
Jan. 8 5 31.42 27 11.4 1.981 2.905 155 16.4 9.3 254.5 22:18 (180, 28)
Jan. 15 5 27.25 26 53.6 2.017 2.896 147 16.5 7.4 249.6 21:47 (180, 28)
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New comet. It keeps 16.5 mag in good condition until late January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 11 6.38 25 31.7 1.728 2.457 127 16.6 10.4 355.5 3:11 (192, 29)
Jan. 15 11 5.14 26 46.8 1.706 2.498 134 16.6 11.7 340.4 3:19 (182, 28)
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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)
Jan. 8 0 11.88 7 11.1 2.552 2.536 77 16.6 21.2 65.5 21:02 (114, 19)
Jan. 15 0 21.24 8 13.9 2.635 2.535 73 16.7 22.4 65.8 20:58 (112, 16)
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It will brighten gradually, then 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)
Jan. 8 15 13.15 -14 45.8 3.874 3.453 57 16.7 17.0 107.5 3:11 (273, 22)
Jan. 15 15 20.84 -15 20.4 3.771 3.439 63 16.6 16.3 107.1 3:19 (269, 28)
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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)
Jan. 8 1 37.93 12 30.1 1.356 1.802 99 16.8 29.3 56.0 21:02 (135, 30)
Jan. 15 1 49.93 14 22.5 1.439 1.823 95 17.1 30.1 58.4 20:58 (134, 27)
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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)
Jan. 8 0 59.65 -1 4.4 3.847 3.897 85 16.8 9.0 50.3 21:02 (116, 33)
Jan. 15 1 3.16 -0 23.1 3.971 3.915 79 16.9 10.1 53.4 20:58 (113, 29)
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Although the condition is good, it will be fainter than 18 mag in late February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 3 50.47 11 39.8 1.147 1.930 129 17.2 13.4 13.6 21:02 (172, 43)
Jan. 15 3 52.88 13 12.1 1.196 1.925 123 17.2 15.0 27.5 20:58 (165, 40)
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It will be getting lower in the evening sky after this, then will be unobservable in March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 1 6.48 9 45.2 2.947 3.128 91 17.3 11.2 76.4 21:02 (126, 27)
Jan. 15 1 12.02 10 6.0 3.038 3.120 85 17.3 12.9 75.1 20:58 (123, 24)
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It keeps 17.5 mag and locating high until February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 3 19.90 16 40.8 2.321 2.987 124 17.3 6.2 329.5 21:02 (164, 37)
Jan. 15 3 18.99 17 20.0 2.378 2.957 117 17.3 5.8 354.4 20:58 (157, 34)
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Although the condition is good, it will be fainter than 18 mag in February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 5 17.37 32 13.1 0.994 1.918 151 17.3 0.5 179.7 22:04 (180, 23)
Jan. 15 5 18.23 32 7.7 1.026 1.918 145 17.4 3.3 108.1 21:38 (180, 23)
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Split comets. It is observable in good condition at 17.5 mag until March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 9 42.69 39 4.8 3.580 4.420 144 17.5 6.4 321.0 2:33 (180, 16)
Jan. 15 9 39.89 39 38.6 3.540 4.418 149 17.5 7.0 311.7 2:03 (180, 15)
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New comet. It will be observable at 17.5 mag until May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 11 40.97 3 45.1 4.117 4.599 113 17.7 9.7 228.2 3:11 (210, 47)
Jan. 15 11 37.13 3 0.5 3.995 4.584 121 17.6 11.1 235.8 3:19 (196, 51)
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Although it has passed the perihelion about 1 year ago, it has been brightening gradually, and reached to 17.5 mag now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 7 23.08 46 41.9 3.106 4.022 155 17.7 9.3 292.3 0:14 (180, 8)
Jan. 15 7 17.25 47 2.4 3.134 4.037 153 17.7 8.7 285.6 23:36 (180, 8)
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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)
Jan. 8 5 5.03 47 56.9 5.009 5.827 143 17.8 6.6 283.5 21:52 (180, 7)
Jan. 15 5 0.88 48 5.6 5.039 5.800 137 17.7 5.6 280.3 21:20 (180, 7)
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It keeps 18 mag until spring.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 14 13.86 44 46.8 6.475 6.651 96 17.8 7.5 343.6 3:11 (217, -6)
Jan. 15 14 12.08 45 39.3 6.421 6.676 100 17.8 8.4 337.3 3:19 (212, -2)
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It keeps 18 mag until summer.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 16 41.09 33 30.2 7.445 7.118 66 17.9 4.1 34.5 3:11 (244,-22)
Jan. 15 16 42.22 33 56.2 7.399 7.131 70 17.9 4.4 22.8 3:19 (240,-16)
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Diffused, and fading rapidly. It will be fainter than 18 mag in January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 1 45.66 10 6.9 2.467 2.816 100 17.9 10.1 62.3 21:02 (135, 33)
Jan. 15 1 50.29 10 41.4 2.606 2.858 94 18.2 11.7 64.0 20:58 (131, 29)
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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)
Jan. 8 6 7.36 6 26.4 3.528 4.449 156 17.9 16.5 245.2 22:54 (180, 49)
Jan. 15 6 0.67 5 40.9 3.619 4.497 149 18.0 14.8 245.8 22:20 (180, 49)
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