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It started fading slowly. It is visible all night in the Northern Hemisphere. 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)
Feb. 5 2 51.42 66 37.0 0.534 1.218 102 4.5 55.4 357.8 18:58 (168, 56)
Feb. 12 2 52.75 72 25.1 0.603 1.238 99 4.8 44.9 4.8 19:04 (169, 50)
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It locates high in the Southern Hemisphere. It will be fading gradually in the evening sky. It becomes too low in the evening sky at 12-13 mag in April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 3 41.48 -31 4.7 1.851 2.057 87 9.5 40.2 339.4 18:58 ( 5, 24)
Feb. 12 3 35.56 -27 1.4 2.037 2.141 82 9.9 33.0 345.4 19:04 ( 15, 27)
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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)
Feb. 5 19 35.72 23 50.4 1.800 1.332 46 10.1 40.1 131.4 5:29 (257, 24)
Feb. 12 19 50.87 20 41.0 1.748 1.244 44 9.9 40.9 132.4 5:24 (261, 24)
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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)
Feb. 5 14 23.17 -39 3.9 1.042 1.429 89 11.1 84.2 164.5 5:22 ( 0, 16)
Feb. 12 14 39.93 -49 37.0 0.924 1.344 89 10.6 104.0 164.0 5:11 ( 0, 6)
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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)
Feb. 5 20 51.71 -18 41.0 2.407 1.431 6 11.5 50.0 80.4 5:29 (283,-15)
Feb. 12 21 15.86 -17 36.5 2.400 1.427 7 11.5 50.0 78.6 5:24 (281,-15)
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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)
Feb. 5 12 48.59 15 6.5 0.804 1.615 128 11.8 12.9 49.5 3:48 ( 0, 70)
Feb. 12 12 52.11 16 8.2 0.796 1.644 134 12.0 10.3 27.2 3:24 ( 0, 71)
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It will be fading gradually after this. Getting diffused in February. It will be visible visually until May when it becomes too low in the evening sky at 13-14 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 3 43.87 13 26.8 1.761 2.169 100 11.8 19.6 75.2 18:58 ( 11, 68)
Feb. 12 3 53.36 14 2.3 1.858 2.191 95 12.0 21.1 75.9 19:04 ( 26, 67)
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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)
Feb. 5 0 2.74 52 38.8 2.154 2.168 77 12.2 20.8 43.2 18:58 (132, 45)
Feb. 12 0 14.57 54 27.1 2.226 2.197 75 12.5 22.3 44.9 19:04 (135, 42)
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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)
Feb. 5 2 56.85 22 1.5 1.600 1.907 91 12.6 23.3 60.5 18:58 ( 51, 71)
Feb. 12 3 7.76 23 21.5 1.653 1.890 87 12.6 25.5 63.4 19:04 ( 64, 68)
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It has been rather faint, diffused, and hard to see since mid January. It will be too low in March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 0 19.97 10 34.8 6.272 5.732 52 13.7 9.7 70.3 18:58 ( 78, 34)
Feb. 12 0 24.46 10 58.9 6.358 5.733 47 13.7 10.3 69.7 19:04 ( 83, 29)
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It has brightened to 16 mag in mid January. 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)
Feb. 5 13 14.73 9 1.0 1.379 2.070 121 14.1 12.9 83.2 4:14 ( 0, 64)
Feb. 12 13 20.29 9 15.6 1.280 2.029 126 13.7 11.0 76.0 3:52 ( 0, 64)
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Not yet observed in this return. The condition of this appearance is bad. It will appear at the evening low sky in March at 12.5 mag in the Northern Hemisphere, or in April at 14 mag in the Southern Hemisphere. Then it will become faint rapidly while locating very low in the evening.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 22 5.58 -5 13.9 1.767 0.868 16 14.9 70.2 72.4 18:58 ( 85, -2)
Feb. 12 22 37.96 -2 38.3 1.701 0.816 17 14.2 75.1 72.1 19:04 ( 87, 0)
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It tends to become brightest after the perihelion passage. Therefore it becomes brightest in February. It was 15.5 mag in late January, fainter than expected by about 1-1.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 10 33.25 29 45.0 1.877 2.812 157 14.2 12.4 322.0 1:33 ( 0, 85)
Feb. 12 10 28.82 30 49.7 1.879 2.826 159 14.2 12.3 315.1 1:02 ( 0, 86)
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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)
Feb. 5 10 39.90 -15 38.4 3.449 4.270 142 14.5 20.6 287.4 1:40 ( 0, 39)
Feb. 12 10 30.32 -14 51.2 3.470 4.346 149 14.6 21.2 290.2 1:03 ( 0, 40)
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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)
Feb. 5 22 59.76 56 4.4 3.938 3.810 75 14.6 18.3 107.7 18:58 (138, 36)
Feb. 12 23 13.87 55 28.7 4.078 3.885 71 14.8 17.3 105.1 19:04 (138, 34)
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It kept bright as 13.5 mag until early January since the outburst in late November. But it seems to start fading after mid January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 3 16.74 53 6.7 2.332 2.729 103 14.6 23.4 244.1 18:58 (160, 70)
Feb. 12 3 2.79 51 57.4 2.481 2.746 94 14.8 18.1 239.1 19:04 (143, 66)
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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)
Feb. 5 15 22.71 -32 12.6 2.083 2.143 79 14.9 21.6 235.0 5:29 (348, 22)
Feb. 12 15 10.83 -33 43.0 1.896 2.120 88 14.7 28.7 242.0 5:24 (356, 21)
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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)
Feb. 5 1 3.03 52 12.4 1.794 1.956 84 14.8 22.4 58.4 18:58 (133, 54)
Feb. 12 1 18.72 53 35.3 1.848 1.963 81 14.9 24.5 60.6 19:04 (134, 51)
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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)
Feb. 5 5 21.66 48 13.0 5.508 6.099 122 14.9 2.1 235.2 20:19 (180, 77)
Feb. 12 5 20.84 48 3.7 5.567 6.073 116 14.9 1.5 202.9 19:50 (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)
Feb. 5 2 24.37 -1 6.8 1.210 1.387 77 15.0 47.1 51.9 18:58 ( 37, 48)
Feb. 12 2 42.26 2 17.3 1.228 1.376 75 15.1 49.1 53.6 19:04 ( 45, 49)
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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)
Feb. 5 4 18.65 -18 15.8 4.315 4.582 99 15.3 9.0 285.2 19:15 ( 0, 37)
Feb. 12 4 14.81 -17 57.4 4.354 4.518 93 15.2 7.5 292.5 19:04 ( 6, 37)
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It will be observable in good condition at 16 mag until March. It was reported as 14.4 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 7 44.11 57 56.8 1.147 1.970 134 15.7 12.8 180.7 22:41 (180, 67)
Feb. 12 7 44.92 56 15.9 1.155 1.957 131 15.7 16.1 172.3 22:14 (180, 69)
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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)
Feb. 5 10 57.97 43 3.2 2.947 3.798 145 15.8 15.4 274.9 1:58 (180, 82)
Feb. 12 10 48.00 43 6.9 2.998 3.866 147 15.9 15.7 269.2 1:21 (180, 82)
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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)
Feb. 5 8 56.10 33 48.2 1.060 2.020 161 15.8 17.1 334.2 23:52 ( 0, 89)
Feb. 12 8 52.17 35 25.6 1.096 2.036 155 16.0 13.9 333.3 23:21 (180, 89)
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It will be too low in the evening sky in mid February, then it will be unobservable.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 0 25.21 0 34.4 0.716 0.758 49 15.9 42.6 222.0 18:58 ( 68, 29)
Feb. 12 0 9.23 -3 21.5 0.718 0.606 37 15.9 55.4 229.1 19:04 ( 73, 17)
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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)
Feb. 5 1 48.81 -15 11.1 1.280 1.253 65 16.0 68.6 72.1 18:58 ( 37, 31)
Feb. 12 2 17.01 -12 51.4 1.449 1.391 66 16.7 56.0 70.7 19:04 ( 40, 32)
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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)
Feb. 5 15 41.66 -16 49.6 3.441 3.397 79 16.4 13.4 106.3 5:29 (339, 35)
Feb. 12 15 47.64 -17 14.6 3.327 3.383 84 16.3 12.1 106.3 5:24 (343, 36)
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It will reach to 10 mag in June and July. It keeps locating rather low in the morning until that. It must have been already bright, but no observations have been reported since 2004 June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 18 37.53 -0 48.0 2.739 2.106 41 16.7 34.3 78.5 5:29 (288, 22)
Feb. 12 18 53.47 0 4.1 2.634 2.044 44 16.3 35.6 76.9 5:24 (288, 24)
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It keeps 17 mag until May when it becomes low in the evening.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 5 22.10 26 2.1 2.188 2.872 125 16.6 2.3 166.9 20:19 ( 0, 81)
Feb. 12 5 23.04 25 47.5 2.262 2.865 118 16.6 3.7 122.7 19:53 ( 0, 81)
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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)
Feb. 5 2 8.82 48 1.6 1.215 1.582 91 16.7 37.8 69.0 18:58 (131, 66)
Feb. 12 2 33.91 49 24.9 1.302 1.629 89 16.8 37.1 73.2 19:04 (133, 64)
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Appearing at dawn. It will be observable in good condition at 15.5 mag from April to June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 5 18 16.94 -3 8.8 4.295 3.672 45 16.8 5.8 15.8 5:29 (293, 25)
Feb. 12 18 17.42 -2 27.1 4.174 3.649 51 16.7 6.3 3.9 5:24 (297, 29)
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It will be fading gradually, 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)
Feb. 5 10 52.56 30 34.0 1.704 2.622 153 16.8 14.8 311.7 1:53 ( 0, 85)
Feb. 12 10 46.17 31 38.2 1.727 2.663 156 16.9 14.9 304.6 1:19 ( 0, 87)
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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)
Feb. 5 0 52.24 11 36.1 2.877 2.540 60 16.9 25.1 66.6 18:58 ( 73, 42)
Feb. 12 1 3.40 12 46.3 2.954 2.544 56 16.9 25.8 66.9 19:04 ( 79, 38)
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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)
Feb. 5 4 52.82 48 14.4 5.190 5.721 118 17.2 2.0 270.2 19:50 (180, 77)
Feb. 12 4 51.84 48 14.0 5.256 5.696 111 17.2 0.7 261.0 19:21 (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)
Feb. 5 3 23.73 19 33.7 2.573 2.871 97 17.3 9.7 44.9 18:58 ( 30, 73)
Feb. 12 3 27.68 20 22.5 2.642 2.843 91 17.3 11.5 51.9 19:04 ( 50, 69)
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Recovery of a peculiar asteroid 2004 FS101 discovered in 2004 spring. It keeps observable at 15-16 mag for a long time from 2005 spring to 2006 winter. 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)
Feb. 5 14 35.24 23 16.2 4.421 4.773 105 17.5 15.1 12.1 5:29 (354, 78)
Feb. 12 14 36.52 25 3.9 4.291 4.728 110 17.4 16.0 6.4 5:08 ( 0, 80)
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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)
Feb. 5 9 28.23 40 55.0 3.500 4.413 154 17.5 7.4 288.9 0:29 (180, 84)
Feb. 12 9 23.88 41 8.3 3.514 4.412 152 17.5 7.1 281.3 23:52 (180, 84)
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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)
Feb. 5 4 10.48 17 47.3 1.375 1.920 107 17.5 21.0 53.0 19:08 ( 0, 73)
Feb. 12 4 19.41 19 13.6 1.442 1.922 103 17.6 22.9 58.3 19:04 ( 12, 74)
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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)
Feb. 5 5 31.60 31 34.3 1.171 1.934 127 17.7 13.0 99.0 20:29 ( 0, 87)
Feb. 12 5 39.45 31 19.0 1.232 1.944 121 17.8 15.9 98.3 20:09 ( 0, 86)
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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)
Feb. 5 14 1.59 48 32.0 6.291 6.751 113 17.8 10.9 320.5 5:01 (180, 77)
Feb. 12 13 56.18 49 30.5 6.263 6.777 117 17.8 11.6 315.1 4:28 (180, 76)
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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)
Feb. 5 11 20.18 0 56.5 3.686 4.534 145 17.9 15.8 249.6 2:20 ( 0, 56)
Feb. 12 11 12.90 0 18.9 3.613 4.521 153 17.8 17.1 252.2 1:46 ( 0, 55)
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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)
Feb. 5 16 43.27 35 42.5 7.235 7.170 82 17.9 6.0 354.1 5:29 (259, 63)
Feb. 12 16 42.64 36 26.0 7.177 7.184 86 17.8 6.6 346.3 5:24 (258, 68)
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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)
Feb. 5 7 2.42 47 15.2 3.294 4.085 138 17.9 5.6 260.2 21:59 (180, 78)
Feb. 12 6 59.14 47 5.5 3.370 4.101 132 17.9 4.4 246.0 21:28 (180, 78)
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