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It brightened rapidly from mid December and reached to 7.5 mag in mid January. Then it turned to be brightening very slowly, and still 7 mag in mid February. In the Northern Hemisphere, it is getting lower in the evening sky after this, and will be unobservable in early March. It is not observable until April in the Southern Hemisphere.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 0 10.79 13 45.0 2.011 1.373 37 6.6 10.2 217.7 19:11 ( 94, 19)
Feb. 28 0 8.03 12 51.3 2.018 1.264 30 6.2 9.0 216.1 19:17 ( 98, 11)
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It is expected to be 2 mag in spring. In the Southern Hemisphere, it keeps observable around the same altitude in the evening sky until that time. On the other hand, in the Northern Hemisphere, it is not observable until that time.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 23 25.66 -66 49.2 2.014 1.696 57 8.1 9.2 51.0 19:11 ( 27,-31)
Feb. 28 23 34.92 -66 13.5 1.886 1.610 58 7.8 9.8 63.5 19:17 ( 29,-33)
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It keeps observable at 12 mag in the south until April. In the Northern Hemisphere, it locates 30 deg high, not so high in the south.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 13 27.68 -24 55.2 1.565 2.240 120 12.2 55.0 254.3 3:28 ( 0, 30)
Feb. 28 12 56.97 -26 27.1 1.453 2.241 132 12.0 66.4 260.1 2:30 ( 0, 29)
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It will be observable at 12-13 mag in the evening sky until April. But it will be getting lower gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 2 1.74 14 56.3 1.807 1.600 61 12.5 40.6 85.0 19:11 ( 77, 43)
Feb. 28 2 21.52 15 20.4 1.845 1.590 59 12.5 41.5 85.3 19:17 ( 80, 40)
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Not yet recovered in this return. At the previous appearance, it brightened after the perihelion passage and reached to 10 mag. If it behaves so again, it may brighten after the perihelion passage on Jan. 9 and reach to 13 mag in March. However, it keeps locating very 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)
Feb. 21 0 40.14 -3 32.1 2.142 1.474 36 13.3 50.4 71.2 19:11 ( 74, 16)
Feb. 28 1 2.23 -1 39.0 2.191 1.503 35 12.5 49.5 71.1 19:17 ( 78, 15)
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Not obesrvable. In the Northern Hemisphere, it will appear at dawn at 12.5 mag. However, because it had been fading since the discovery although it was coming closer to the Sun, the brightness in May is quite uncertain. Then it keeps low until autumn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 22 49.54 -9 3.7 2.728 1.757 8 12.6 38.2 42.1 19:11 ( 86,-10)
Feb. 28 23 1.75 -5 41.5 2.690 1.708 5 12.6 39.5 41.8 19:17 ( 92,-12)
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Curernt brightness is uncertain. It was observed as 16.1 mag on Dec. 31, 1.5 mag fainter than expected. Although it had been expected to reach to 10 mag in spring, it may be 12.5 or 14 mag at best. It is observable in good condition in the Southern Hemisphere. But in the Northern Hemisphere, it keeps locating lower than 15 deg until June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 19 2.93 -23 41.3 1.959 1.478 47 13.4 50.5 86.5 5:16 (309, 11)
Feb. 28 19 28.73 -23 11.1 1.906 1.452 48 13.1 51.3 84.1 5:08 (308, 10)
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It will be 6.5 mag in the southern sky from autumn to winter in 2004. It is getting higher in the morning sky. In the Northern Hemisphere, it is observable in good condition until early September when it becomes to 7.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 20 0.00 17 11.2 4.112 3.463 43 13.5 9.2 54.3 5:16 (266, 25)
Feb. 28 20 3.55 17 52.5 3.984 3.385 46 13.3 9.5 47.2 5:08 (268, 29)
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It is still observable visually at 13 mag, however, it is getting lower and lower 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)
Feb. 21 0 38.47 9 30.2 4.288 3.603 41 13.7 3.1 36.0 19:11 ( 86, 23)
Feb. 28 0 39.53 9 49.2 4.417 3.646 34 13.9 3.9 42.0 19:17 ( 91, 16)
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Not observable. It will appear at dawn in May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 23 8.46 -0 4.5 6.665 5.728 17 13.8 12.3 65.8 19:11 ( 91, -1)
Feb. 28 23 13.74 0 31.3 6.692 5.727 11 13.8 12.5 65.4 19:17 ( 95, -7)
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Getting brighter than expected after the perihelion passage. It seems to be observable visually around 13.5 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 13 31.22 10 5.8 1.421 2.206 131 14.3 0.3 279.9 3:31 ( 0, 65)
Feb. 28 13 30.29 10 7.0 1.382 2.221 138 14.3 3.7 273.9 3:02 ( 0, 65)
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The condition is worst in this return. It is not observable around the perihelion passage. It will appear at dawn in autumn, when it will already fade 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. 21 21 41.68 -5 11.3 2.516 1.551 9 14.8 44.5 73.3 5:16 (271, -8)
Feb. 28 22 2.07 -3 37.2 2.451 1.490 10 14.4 46.7 72.5 5:08 (269, -7)
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Appearing at dawn and observed as bright as expected. It is fading out 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. 21 18 18.90 -20 51.9 2.485 2.120 57 14.5 26.3 87.7 5:16 (315, 19)
Feb. 28 18 31.62 -20 42.3 2.453 2.160 61 14.5 24.7 86.4 5:08 (316, 20)
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In the Northern Hemisphere, it is not observable until when it becomes fainter than 18 mag. In the Southern Hemisphere, it is appearing in the very low sky at dawn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 20 41.04 -23 48.2 1.981 1.172 25 14.9 36.3 74.7 5:16 (295, -7)
Feb. 28 20 57.93 -22 40.7 2.055 1.277 28 15.5 33.0 73.2 5:08 (294, -5)
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The brightness evolution is gradual in this return. So it will reach to 15 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. 21 15 21.88 -4 2.0 1.335 1.820 102 15.0 25.5 84.6 5:16 (358, 51)
Feb. 28 15 33.13 -3 40.9 1.290 1.833 106 14.9 22.9 81.0 5:05 ( 0, 51)
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Not observable. It becomes observable again at 15.5 mag after June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 22 45.71 -16 17.2 3.931 2.959 9 15.4 24.3 67.6 19:11 ( 80,-15)
Feb. 28 22 56.55 -15 12.1 3.958 2.980 7 15.5 24.1 67.4 19:17 ( 84,-19)
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It is expected to be 5 mag in 2005 spring. Until that time, it keeps observable in the Northern Hemisphere, which the comet will be getting brighter gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 4 44.14 75 38.9 5.029 5.329 102 16.3 8.1 213.8 19:11 (177, 49)
Feb. 28 4 37.40 74 51.2 5.035 5.262 97 16.2 7.4 202.8 19:17 (173, 49)
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It is getting fainter slowly and will be unobervable at 17 mag in May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 1 17.45 66 19.0 2.812 2.883 84 16.4 33.3 117.5 19:11 (151, 44)
Feb. 28 1 49.46 64 24.8 2.881 2.892 80 16.4 32.4 120.8 19:17 (149, 44)
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It reached to 15.5 mag in January, much brighter than expected. It already began to be fading, 16-16.5 mag in mid February.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 6 31.10 10 0.1 3.106 3.763 125 16.5 2.8 12.2 20:28 ( 0, 65)
Feb. 28 6 31.81 10 19.0 3.209 3.783 118 16.7 3.6 41.8 20:01 ( 0, 65)
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It will be fading slowly and become 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. 21 12 5.32 3 42.5 1.672 2.585 151 16.7 11.1 314.5 2:05 ( 0, 59)
Feb. 28 12 1.19 4 38.7 1.662 2.614 159 16.8 12.7 310.5 1:34 ( 0, 60)
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It is observable around 17 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. 21 7 56.09 21 44.1 3.309 4.159 145 16.8 7.9 321.3 21:52 ( 0, 77)
Feb. 28 7 53.97 22 25.2 3.388 4.172 137 16.9 6.6 328.3 21:23 ( 0, 77)
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Fading slowly. It will be observable in good condition until May when it will be 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. 21 9 54.94 49 10.4 3.520 4.337 141 16.8 9.6 263.0 23:51 (180, 76)
Feb. 28 9 48.41 48 57.3 3.615 4.400 137 16.9 9.1 253.8 23:17 (180, 76)
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It is observable around 17 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. 21 18 50.65 22 4.4 6.154 5.722 59 16.8 13.6 43.0 5:16 (271, 42)
Feb. 28 18 55.14 23 15.6 6.120 5.749 63 16.8 13.4 39.2 5:08 (271, 45)
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It keeps 17 mag until July.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 17 2.32 41 44.3 5.774 5.833 88 17.0 12.2 349.2 5:16 (244, 68)
Feb. 28 17 0.44 43 10.2 5.721 5.843 92 17.0 13.0 343.7 5:08 (237, 72)
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It will be fainter than 18 mag in May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 20 54.91 50 53.1 6.728 6.360 64 17.2 13.3 65.8 5:16 (226, 30)
Feb. 28 21 3.80 51 32.7 6.771 6.389 63 17.3 13.1 63.3 5:08 (226, 31)
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It will be fainter than 18 mag in late March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 2 57.48 13 6.5 1.634 1.663 74 17.3 41.5 53.8 19:11 ( 63, 53)
Feb. 28 3 13.94 15 52.9 1.695 1.673 71 17.4 41.6 56.4 19:17 ( 71, 51)
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Unusual minor planet with a period of 55 years. It becomes to be at peak in mid February, and fainter than 18 mag in late March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 9 39.94 31 49.7 1.312 2.258 157 17.3 18.2 350.0 23:36 ( 0, 87)
Feb. 28 9 38.44 33 47.3 1.326 2.242 150 17.4 15.8 352.3 23:07 ( 0, 89)
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It will be observable at 17.5 mag in good condition until August.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 21 17 41.90 6 44.1 3.446 3.246 70 17.4 18.7 80.6 5:16 (302, 46)
Feb. 28 17 50.31 7 7.2 3.375 3.247 74 17.4 17.7 78.4 5:08 (304, 48)
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