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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. 15 3 19.77 37 58.0 0.370 1.215 120 3.7 116.1 348.2 19:39 (180, 86)
Jan. 22 3 6.74 49 55.4 0.413 1.206 112 3.9 92.5 350.2 18:58 (180, 74)
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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. 15 4 34.88 -47 35.8 1.370 1.805 98 8.2 73.9 317.7 20:52 ( 0, 8)
Jan. 22 4 8.00 -41 23.2 1.511 1.888 96 8.7 60.8 326.3 19:59 ( 0, 14)
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In the Northern Hemisphere, it is observable in the morning low sky until March when it reaches to 8 mag In the Southern Hemisphere, it becomes observable in the morning low sky after March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 18 47.38 32 53.7 1.934 1.605 55 10.9 40.1 129.5 5:38 (245, 24)
Jan. 22 19 4.14 29 54.5 1.892 1.513 52 10.6 39.8 130.0 5:37 (249, 24)
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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. 15 3 20.51 11 52.9 1.489 2.112 115 11.3 13.7 74.5 19:41 ( 0, 67)
Jan. 22 3 27.34 12 20.9 1.576 2.130 110 11.5 16.0 74.4 19:20 ( 0, 67)
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Very diffused and widely spreading visually. It will be fading gradually after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 12 23.79 12 52.9 0.857 1.544 113 11.3 24.4 80.5 4:46 ( 0, 68)
Jan. 22 12 34.29 13 26.8 0.835 1.565 118 11.4 20.5 73.9 4:29 ( 0, 68)
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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. 15 23 37.18 47 45.3 1.925 2.099 85 11.6 15.4 34.3 18:40 (126, 57)
Jan. 22 23 44.06 49 17.3 2.003 2.119 82 11.8 17.3 38.3 18:46 (128, 53)
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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 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. 15 19 38.57 -20 42.7 2.446 1.464 2 12.0 48.8 86.6 5:38 (284,-16)
Jan. 22 20 2.95 -20 14.9 2.430 1.449 3 11.8 49.3 84.4 5:37 (284,-15)
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Very bright at 11.5 mag visually. In the Northern Hemisphere, it is observable in the morning until early February, but will be unobservable in mid February. It goes to the southern sky and northern people cannot see it around the perihelion passage. It will appear in the morning again at 13 mag in June, then it keeps observable while fading. In the Southern Hemisphere, it is observable as bright as 9-10 mag from February to April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 13 52.91 -18 25.4 1.519 1.694 82 12.7 45.2 158.3 5:38 (349, 36)
Jan. 22 14 1.51 -23 51.5 1.347 1.605 85 12.2 54.6 161.1 5:37 (355, 31)
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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. 15 2 33.06 18 6.9 1.447 1.971 106 12.7 15.5 46.4 18:53 ( 0, 73)
Jan. 22 2 39.41 19 23.1 1.497 1.948 101 12.7 18.2 52.6 18:46 ( 12, 74)
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It appeared in the evening very low sky in early January, when it was observed at 11 mag visually. It is extremely diffused and fading rapidly. No observations have been reported since Jan. 9.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 23 23.81 -22 49.9 0.888 0.795 49 13.2 140.1 84.1 18:40 ( 42, 19)
Jan. 22 0 25.95 -20 32.2 0.988 0.957 58 14.3 110.7 78.5 18:46 ( 37, 25)
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It became bright at 12 mag in outburst in early January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 0 8.28 9 37.4 5.974 5.731 71 13.6 7.5 73.3 18:40 ( 58, 51)
Jan. 22 0 11.85 9 53.9 6.078 5.731 64 13.6 8.3 72.1 18:46 ( 66, 46)
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Completely diffused, but still bright at 12 mag 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. 15 22 11.59 58 36.8 3.527 3.581 85 14.0 21.8 113.7 18:40 (141, 44)
Jan. 22 22 28.78 57 38.4 3.661 3.658 82 14.2 20.5 112.1 18:46 (139, 42)
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It keeps bright as 13.5 mag still in early January since the outburst in late November.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 4 34.21 56 8.8 1.946 2.688 130 14.0 43.4 265.9 20:51 (180, 69)
Jan. 22 4 1.49 55 25.6 2.059 2.700 120 14.2 36.3 257.3 19:52 (180, 70)
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It tends to become brightest after the perihelion passage. It was 16 mag in early January, 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. 15 10 41.09 26 10.0 1.946 2.773 140 14.3 10.2 350.3 3:04 ( 0, 81)
Jan. 22 10 39.58 27 22.0 1.911 2.785 146 14.2 11.1 338.9 2:35 ( 0, 82)
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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. 15 11 6.37 -17 6.4 3.482 4.038 117 14.3 16.2 277.8 3:29 ( 0, 38)
Jan. 22 10 58.15 -16 46.3 3.458 4.116 126 14.3 18.0 281.3 2:53 ( 0, 38)
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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. 15 0 29.08 48 25.9 1.625 1.952 93 14.6 15.0 49.8 18:40 (132, 66)
Jan. 22 0 38.23 49 36.4 1.682 1.951 90 14.7 17.7 53.5 18:46 (131, 61)
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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. 15 12 52.86 9 2.6 1.708 2.192 105 15.2 17.6 95.1 5:15 ( 0, 64)
Jan. 22 13 0.86 8 54.8 1.594 2.151 110 14.8 16.3 92.1 4:55 ( 0, 64)
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It has been brightening rapidly. 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. 15 5 28.60 48 28.1 5.383 6.180 141 15.0 4.7 268.9 21:48 (180, 77)
Jan. 22 5 25.61 48 25.8 5.415 6.153 135 14.9 3.9 261.8 21:18 (180, 77)
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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. 15 1 37.93 -10 57.1 1.167 1.445 83 15.1 39.1 47.0 18:40 ( 14, 43)
Jan. 22 1 52.16 -7 46.4 1.180 1.421 81 15.1 42.1 48.7 18:46 ( 21, 45)
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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. 15 15 39.46 -28 27.7 2.623 2.229 56 15.6 10.3 207.0 5:38 (327, 18)
Jan. 22 15 36.14 -29 35.2 2.450 2.198 63 15.4 12.8 217.8 5:37 (334, 20)
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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. 15 11 24.06 41 59.5 2.877 3.592 130 15.4 12.2 290.9 3:47 (180, 83)
Jan. 22 11 16.32 42 27.5 2.888 3.661 136 15.5 13.6 285.6 3:12 (180, 83)
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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. 15 4 35.06 -18 41.8 4.228 4.774 118 15.4 13.4 269.4 20:54 ( 0, 36)
Jan. 22 4 28.83 -18 39.1 4.250 4.710 112 15.4 12.0 274.1 20:21 ( 0, 36)
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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. It will be fading gradually after this, and will be 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)
Jan. 15 9 7.57 27 17.6 1.024 1.979 160 15.4 21.1 345.9 1:31 ( 0, 82)
Jan. 22 9 4.34 29 38.9 1.023 1.991 165 15.5 20.9 340.8 1:00 ( 0, 85)
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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. 15 7 50.45 60 34.3 1.170 2.029 140 15.9 3.8 239.1 0:14 (180, 64)
Jan. 22 7 47.42 60 7.5 1.155 2.006 139 15.8 6.4 207.8 23:39 (180, 65)
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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. 15 1 0.19 11 25.1 0.670 1.125 83 15.8 43.6 219.7 18:40 ( 42, 60)
Jan. 22 0 48.09 7 40.5 0.692 1.014 72 15.9 39.0 217.7 18:46 ( 54, 50)
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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. 15 0 59.99 41 42.9 0.971 1.448 95 16.1 40.8 55.3 18:40 (120, 73)
Jan. 22 1 21.69 44 12.0 1.049 1.491 94 16.3 39.6 60.0 18:46 (125, 70)
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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. 15 5 27.25 26 53.6 2.017 2.896 147 16.5 7.4 249.6 21:47 ( 0, 82)
Jan. 22 5 24.24 26 35.7 2.065 2.888 139 16.5 5.2 241.0 21:16 ( 0, 82)
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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. 15 15 20.84 -15 20.4 3.771 3.439 63 16.6 16.3 107.1 5:38 (324, 32)
Jan. 22 15 28.19 -15 52.5 3.664 3.425 68 16.5 15.4 106.7 5:37 (329, 33)
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It will be fading gradually after this, and will be 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)
Jan. 15 11 5.13 26 46.8 1.707 2.499 134 16.6 11.7 340.4 3:28 ( 0, 82)
Jan. 22 11 2.31 28 4.5 1.695 2.540 141 16.7 13.0 328.8 2:57 ( 0, 83)
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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. 15 0 21.24 8 13.9 2.635 2.535 73 16.7 22.4 65.8 18:40 ( 52, 52)
Jan. 22 0 31.11 9 19.4 2.717 2.536 68 16.7 23.4 66.0 18:46 ( 60, 49)
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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. 15 1 3.16 -0 23.1 3.971 3.915 79 16.9 10.1 53.4 18:40 ( 31, 50)
Jan. 22 1 7.22 0 20.1 4.093 3.932 73 17.0 11.2 55.7 18:46 ( 41, 48)
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Fading rapidly, and it will be 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. 15 1 49.93 14 22.5 1.439 1.823 95 17.1 30.1 58.4 18:40 ( 20, 68)
Jan. 22 2 2.61 16 10.0 1.525 1.846 92 17.5 30.7 60.7 18:46 ( 34, 68)
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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. 15 3 52.88 13 12.1 1.196 1.925 123 17.2 15.0 27.5 20:13 ( 0, 68)
Jan. 22 3 57.09 14 45.3 1.251 1.922 118 17.3 16.9 38.4 19:50 ( 0, 70)
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Because it moves in the northern sky, it keeps observable for a long time in the Northern Hemisphere. It has been brightening rapidly, but it will reach to 16 mag at best in early 2006.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 15 5 0.88 48 5.6 5.039 5.800 137 17.3 5.6 280.3 21:20 (180, 77)
Jan. 22 4 57.39 48 11.0 5.080 5.774 130 17.3 4.5 277.2 20:49 (180, 77)
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It keeps 17.5 mag until May when it becomes low in the evening sky. It will be observable again at 16.5 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. 15 3 18.99 17 20.0 2.378 2.957 117 17.3 5.8 354.4 19:39 ( 0, 72)
Jan. 22 3 19.34 18 2.1 2.439 2.928 110 17.3 6.5 17.8 19:12 ( 0, 73)
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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. 15 1 12.02 10 6.0 3.038 3.120 85 17.3 12.9 75.1 18:40 ( 36, 61)
Jan. 22 1 18.25 10 31.4 3.128 3.112 80 17.4 14.4 74.2 18:46 ( 47, 57)
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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. 15 5 18.22 32 7.8 1.026 1.918 145 17.4 3.3 108.1 21:38 ( 0, 87)
Jan. 22 5 20.89 31 59.0 1.067 1.920 138 17.5 6.7 102.5 21:13 ( 0, 87)
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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. 15 9 39.89 39 38.6 3.540 4.418 149 17.5 7.0 311.7 2:03 (180, 85)
Jan. 22 9 36.43 40 9.1 3.514 4.416 153 17.5 7.3 303.6 1:32 (180, 85)
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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. 15 11 37.13 3 0.5 3.995 4.584 121 17.6 11.1 235.8 4:00 ( 0, 58)
Jan. 22 11 32.37 2 17.6 3.883 4.570 129 17.5 12.7 241.7 3:27 ( 0, 57)
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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. 15 7 17.25 47 2.4 3.134 4.037 153 17.7 8.7 285.6 23:36 (180, 78)
Jan. 22 7 11.68 47 14.5 3.175 4.053 149 17.8 7.8 278.4 23:03 (180, 78)
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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. 15 14 12.08 45 39.3 6.421 6.676 100 17.8 8.4 337.3 5:38 (221, 75)
Jan. 22 14 9.49 46 35.1 6.371 6.701 105 17.8 9.3 331.4 5:37 (202, 77)
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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. 15 16 42.22 33 56.2 7.399 7.131 70 17.9 4.4 22.8 5:38 (256, 48)
Jan. 22 16 43.00 34 27.1 7.347 7.144 74 17.9 4.9 12.2 5:37 (257, 53)
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