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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. 12 2 52.75 72 25.1 0.603 1.238 99 4.8 44.9 4.8 20:29 (167,-22)
Feb. 19 3 5.36 77 10.4 0.673 1.267 97 5.2 38.4 14.7 20:19 (170,-26)
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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. 12 19 50.87 20 41.0 1.748 1.244 44 9.9 40.9 132.4 3:58 (256,-17)
Feb. 19 20 5.86 17 22.0 1.688 1.160 41 9.6 42.5 133.6 4:07 (256,-11)
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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. 12 3 35.56 -27 1.4 2.037 2.141 82 9.9 33.0 345.4 20:29 ( 95, 58)
Feb. 19 3 32.44 -23 34.7 2.227 2.225 77 10.2 27.5 351.6 20:19 ( 97, 52)
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In the Northern Hemisphere, it will be unobservable soon because it goes to the southern sky. 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. 12 14 39.93 -49 37.0 0.924 1.344 89 10.6 104.0 164.0 3:58 (322, 70)
Feb. 19 15 9.62 -62 12.6 0.841 1.262 86 10.1 122.2 159.8 4:07 (344, 61)
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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. 12 21 15.86 -17 36.5 2.400 1.427 7 11.5 50.0 78.6 3:58 (301,-11)
Feb. 19 21 39.69 -16 21.7 2.396 1.427 8 11.9 49.9 77.0 4:07 (298, -9)
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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. 12 3 53.36 14 2.3 1.858 2.191 95 12.0 21.1 75.9 20:29 (143, 33)
Feb. 19 4 3.53 14 38.0 1.957 2.213 91 12.1 22.3 76.8 20:19 (142, 31)
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Very diffused and widely spreading visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 12 52.11 16 8.2 0.796 1.644 134 12.0 10.3 27.2 3:24 (180, 39)
Feb. 19 12 53.19 17 12.9 0.793 1.676 140 12.2 9.2 358.9 2:58 (180, 38)
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In the Northern Hemisphere, it keeps the same altitude at 35 deg high in the evening sky until June when it fades down to 15 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 0 14.57 54 27.1 2.226 2.197 75 12.1 22.3 44.9 20:29 (140,-26)
Feb. 19 0 28.17 56 19.3 2.297 2.228 73 12.2 23.7 46.5 20:19 (142,-27)
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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. 12 3 7.76 23 21.5 1.653 1.890 87 12.6 25.5 63.4 20:29 (139, 19)
Feb. 19 3 20.01 24 40.6 1.706 1.875 83 12.6 27.5 65.9 20:19 (139, 17)
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It brightened rapidly in January and reached to 13 mag. Now it is visible visually. It will keep bright at 13 mag in the evening sky until April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 2 42.26 2 17.3 1.228 1.376 75 13.1 49.1 53.6 20:29 (119, 31)
Feb. 19 3 1.29 5 40.5 1.250 1.370 74 13.0 50.7 55.4 20:19 (122, 29)
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It was 15.5 mag in early February, much fainter than expected. The brightening is much slower than expected. The ephemeris says it 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. 12 13 20.29 9 15.6 1.280 2.029 126 13.7 11.0 76.0 3:52 (180, 46)
Feb. 19 13 24.73 9 37.8 1.187 1.990 132 13.3 8.9 65.5 3:29 (180, 45)
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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. 12 22 37.96 -2 38.3 1.701 0.816 17 14.2 75.1 72.1 20:29 ( 76,-15)
Feb. 19 23 12.33 0 8.2 1.639 0.778 19 13.5 79.6 72.2 20:19 ( 81,-13)
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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. 12 23 13.87 55 28.7 4.078 3.885 71 13.7 17.3 105.1 20:29 (138,-34)
Feb. 19 23 27.21 55 0.3 4.217 3.960 68 13.8 16.4 102.4 20:19 (137,-35)
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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. 12 0 24.46 10 58.9 6.358 5.733 47 13.7 10.3 69.7 20:29 (103, -1)
Feb. 19 0 29.18 11 25.0 6.437 5.733 41 13.7 10.8 69.1 20:19 (101, -4)
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It will be at opposition and reach to 13.5 mag in March and April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 15 10.82 -33 42.7 1.897 2.121 88 14.7 28.7 242.0 3:58 (274, 68)
Feb. 19 14 53.72 -35 18.3 1.713 2.100 98 14.4 38.1 248.6 4:07 (275, 79)
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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. 12 10 30.32 -14 51.2 3.470 4.346 149 14.6 21.2 290.2 1:03 (180, 70)
Feb. 19 10 20.78 -13 56.4 3.508 4.422 154 14.7 21.3 292.8 0:26 (180, 69)
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It keeps 14.5 mag until June when it becomes too 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. 12 5 20.84 48 3.7 5.567 6.073 116 14.9 1.5 202.9 20:29 (174, 6)
Feb. 19 5 20.83 47 53.4 5.632 6.046 110 14.9 1.6 158.9 20:19 (171, 6)
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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. 12 1 18.72 53 35.3 1.848 1.963 81 14.9 24.5 60.6 20:29 (144,-17)
Feb. 19 1 36.68 54 59.1 1.901 1.971 79 15.0 26.4 62.8 20:19 (146,-18)
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It will reach to 9 mag in 2006 spring. In the Southern Hemisphere, it keeps observable until that. In the Northern Hemisphere, it will be too low in the evening in March. Then it keeps unobservable until 2006 March, except it appears very low in the morning at 12 mag from late August to early September. After 2006 March, northern people can observe it for a long time while it is getting fainter.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 4 14.81 -17 57.4 4.354 4.518 93 15.2 7.5 292.5 20:29 (119, 61)
Feb. 19 4 11.84 -17 36.0 4.393 4.454 87 15.2 6.1 301.7 20:19 (114, 57)
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It is brightest now, about 5 months after the perihelion passage. It is fainter than expected in this return, and reaches to 15.5 mag at best.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 10 28.82 30 49.7 1.879 2.826 159 15.4 12.3 315.1 1:02 (180, 24)
Feb. 19 10 23.95 31 45.8 1.894 2.841 159 15.4 11.6 308.8 0:29 (180, 23)
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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. 12 7 44.92 56 15.9 1.155 1.957 131 15.7 16.1 172.3 22:14 (180, -1)
Feb. 19 7 47.73 54 15.0 1.171 1.949 128 15.7 19.1 165.5 21:50 (180, 1)
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It kept bright as 13.5 mag until early January since the outburst in late November. However, it is fading rapidly after that.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 12 3 2.79 51 57.4 2.481 2.746 94 15.8 18.1 239.1 20:29 (154, -5)
Feb. 19 2 52.89 50 57.0 2.633 2.766 87 16.1 13.6 234.7 20:19 (150, -7)
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It will be observable in good condition 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)
Feb. 12 10 48.00 43 6.9 2.998 3.866 147 15.9 15.7 269.2 1:21 (180, 12)
Feb. 19 10 38.01 42 59.6 3.063 3.934 147 16.1 15.6 263.3 0:43 (180, 12)
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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. 12 18 53.47 0 4.1 2.634 2.044 44 16.3 35.6 76.9 3:58 (265, 7)
Feb. 19 19 9.95 1 4.8 2.529 1.981 46 16.0 37.1 75.5 4:07 (261, 10)
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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. 12 8 52.17 35 25.6 1.096 2.036 155 16.0 13.9 333.3 23:21 (180, 19)
Feb. 19 8 49.11 36 41.3 1.144 2.054 148 16.2 10.2 335.3 22:50 (180, 18)
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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. 12 15 47.64 -17 14.6 3.327 3.383 84 16.3 12.1 106.3 3:58 (250, 54)
Feb. 19 15 53.01 -17 37.3 3.213 3.370 90 16.2 10.8 106.7 4:07 (242, 60)
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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. 12 5 23.04 25 47.5 2.262 2.865 118 16.6 3.7 122.7 20:29 (171, 29)
Feb. 19 5 25.28 25 34.4 2.340 2.858 111 16.7 5.8 107.5 20:19 (167, 28)
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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. 12 18 17.42 -2 27.1 4.174 3.649 51 16.7 6.3 3.9 3:58 (262, 15)
Feb. 19 18 17.30 -1 40.2 4.044 3.626 58 16.6 7.1 352.1 4:07 (256, 22)
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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. 12 2 17.01 -12 51.4 1.449 1.391 66 16.7 56.0 70.7 20:29 (100, 36)
Feb. 19 2 40.06 -10 50.2 1.625 1.523 66 17.4 47.1 70.1 20:19 (103, 35)
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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. 12 2 33.91 49 24.9 1.302 1.629 89 16.8 37.1 73.2 20:29 (150, -6)
Feb. 19 2 59.71 50 28.6 1.392 1.678 87 17.0 36.4 77.3 20:19 (151, -6)
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It 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. 12 10 46.17 31 38.2 1.727 2.663 156 16.9 14.9 304.6 1:19 (180, 23)
Feb. 19 10 39.29 32 31.0 1.763 2.704 157 17.1 14.2 297.8 0:45 (180, 23)
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Because it moves in the northern sky, it keeps observable for a long time in the Northern Hemisphere. 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. 12 4 51.84 48 14.0 5.256 5.696 111 17.2 0.7 261.0 20:29 (169, 5)
Feb. 19 4 51.79 48 13.0 5.327 5.671 105 17.2 0.6 105.0 20:19 (166, 5)
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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. 12 14 36.52 25 3.9 4.291 4.728 110 17.4 16.0 6.4 3:58 (198, 28)
Feb. 19 14 37.07 26 59.1 4.170 4.684 115 17.3 17.0 1.0 4:07 (189, 28)
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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. 12 3 27.68 20 22.5 2.642 2.843 91 17.3 11.5 51.9 20:29 (141, 24)
Feb. 19 3 32.72 21 12.9 2.712 2.815 85 17.4 13.3 56.8 20:19 (139, 22)
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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. 12 9 23.88 41 8.3 3.514 4.412 152 17.5 7.1 281.3 23:52 (180, 14)
Feb. 19 9 19.66 41 14.3 3.541 4.411 148 17.5 6.6 272.9 23:21 (180, 14)
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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. 12 4 19.41 19 13.6 1.442 1.922 103 17.6 22.9 58.3 20:29 (153, 31)
Feb. 19 4 29.67 20 35.2 1.513 1.927 98 17.7 24.6 62.6 20:19 (151, 29)
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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. 12 13 56.18 49 30.5 6.263 6.777 117 17.8 11.6 315.1 3:58 (185, 5)
Feb. 19 13 49.78 50 26.7 6.246 6.803 120 17.8 12.2 309.7 3:54 (180, 5)
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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. 12 11 12.90 0 18.9 3.613 4.521 153 17.8 17.1 252.2 1:46 (180, 55)
Feb. 19 11 5.01 -0 16.8 3.558 4.508 162 17.8 18.1 254.1 1:10 (180, 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. 12 16 42.64 36 26.0 7.177 7.184 86 17.8 6.6 346.3 3:58 (218, 5)
Feb. 19 16 41.42 37 12.7 7.118 7.198 90 17.8 7.3 339.2 4:07 (211, 9)
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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. 12 5 39.45 31 19.0 1.232 1.944 121 17.8 15.9 98.3 20:29 (175, 24)
Feb. 19 5 48.73 31 1.7 1.300 1.957 116 18.0 18.4 98.1 20:19 (173, 24)
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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. 12 6 59.14 47 5.5 3.370 4.101 132 17.9 4.4 246.0 21:28 (180, 8)
Feb. 19 6 56.95 46 50.5 3.456 4.117 126 18.0 3.4 224.1 20:59 (180, 8)
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