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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. 14 0 14.14 14 45.6 1.987 1.480 45 6.9 12.1 219.9 20:27 (104, -6)
Feb. 21 0 10.79 13 45.0 2.011 1.373 37 6.6 10.2 217.7 20:17 (100,-10)
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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. 14 23 18.01 -67 34.3 2.131 1.782 56 8.4 9.0 38.6 20:27 ( 25, 28)
Feb. 21 23 25.66 -66 49.2 2.014 1.696 57 8.1 9.2 51.0 20:17 ( 25, 27)
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It keeps observable at 12-13 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. 14 13 51.70 -23 7.4 1.703 2.242 110 12.4 44.1 248.8 3:59 (201, 77)
Feb. 21 13 27.68 -24 55.2 1.565 2.240 120 12.2 55.0 254.3 3:28 (180, 80)
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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. 14 1 42.45 14 32.0 1.770 1.613 64 12.5 39.6 84.9 20:27 (117, 11)
Feb. 21 2 1.74 14 56.3 1.807 1.600 61 12.5 40.6 85.0 20:17 (117, 11)
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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. 14 22 37.59 -12 18.6 2.762 1.810 12 12.6 36.9 42.2 20:27 ( 68,-10)
Feb. 21 22 49.54 -9 3.7 2.728 1.757 8 12.6 38.2 42.1 20:17 ( 69,-13)
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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. 14 0 17.62 -5 26.0 2.096 1.449 37 14.0 51.1 71.5 20:27 ( 88, 6)
Feb. 21 0 40.14 -3 32.1 2.142 1.474 36 13.3 50.4 71.2 20:17 ( 90, 6)
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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. 14 18 37.44 -23 56.1 2.016 1.508 46 13.6 49.5 89.0 3:59 (283, 24)
Feb. 21 19 2.93 -23 41.3 1.959 1.478 47 13.4 50.5 86.5 4:08 (281, 26)
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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. 14 19 56.23 16 36.9 4.229 3.539 40 13.6 9.0 60.9 3:59 (259,-14)
Feb. 21 20 0.00 17 11.2 4.112 3.463 43 13.5 9.2 54.3 4:08 (255, -8)
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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. 14 0 37.81 9 13.8 4.146 3.561 47 13.6 2.3 22.5 20:27 (103, 2)
Feb. 21 0 38.47 9 30.2 4.288 3.603 41 13.7 3.1 36.0 20:17 (100, -2)
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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. 14 23 3.25 -0 39.3 6.627 5.728 22 13.8 12.1 66.2 20:27 ( 81,-12)
Feb. 21 23 8.46 -0 4.5 6.665 5.728 17 13.8 12.3 65.8 20:17 ( 79,-15)
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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. 14 20 22.10 -24 55.2 1.895 1.062 23 14.1 40.2 76.6 3:59 (297, 5)
Feb. 21 20 41.04 -23 48.2 1.981 1.172 25 14.9 36.3 74.7 4:08 (294, 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. 14 13 30.51 10 7.0 1.467 2.192 125 14.3 3.3 97.5 3:58 (180, 45)
Feb. 21 13 31.22 10 5.8 1.421 2.206 131 14.3 0.3 279.9 3:31 (180, 45)
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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. 14 18 5.36 -20 57.5 2.513 2.081 53 14.4 27.9 89.1 3:59 (276, 29)
Feb. 21 18 18.90 -20 51.9 2.485 2.120 57 14.5 26.3 87.7 4:08 (273, 34)
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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. 14 21 22.10 -6 36.9 2.581 1.614 9 15.2 42.5 74.2 3:59 (292,-18)
Feb. 21 21 41.68 -5 11.3 2.516 1.551 9 14.8 44.5 73.3 4:08 (288,-16)
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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. 14 15 9.39 -4 14.7 1.382 1.810 98 15.0 27.9 87.6 3:59 (222, 52)
Feb. 21 15 21.88 -4 2.0 1.335 1.820 102 15.0 25.5 84.6 4:08 (213, 55)
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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. 14 22 34.69 -17 22.4 3.897 2.939 12 15.4 24.5 67.8 20:27 ( 63, -7)
Feb. 21 22 45.71 -16 17.2 3.931 2.959 9 15.4 24.3 67.6 20:17 ( 63, -9)
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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. 14 4 54.44 76 24.6 5.027 5.397 106 16.3 8.8 224.6 20:27 (176,-22)
Feb. 21 4 44.14 75 38.9 5.029 5.329 102 16.3 8.1 213.8 20:17 (174,-22)
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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. 14 0 40.95 68 2.3 2.752 2.876 87 16.3 34.0 113.1 20:27 (155,-28)
Feb. 21 1 17.45 66 19.0 2.812 2.883 84 16.4 33.3 117.5 20:17 (154,-26)
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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. 14 6 31.26 9 41.5 3.011 3.743 131 16.4 2.9 334.4 20:56 (180, 45)
Feb. 21 6 31.10 10 0.1 3.106 3.763 125 16.5 2.8 12.2 20:28 (180, 45)
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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. 14 12 8.50 2 51.1 1.693 2.556 143 16.7 8.9 320.8 2:36 (180, 52)
Feb. 21 12 5.32 3 42.5 1.672 2.585 151 16.7 11.1 314.5 2:05 (180, 51)
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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. 14 10 1.97 49 13.6 3.436 4.275 143 16.7 10.1 271.7 0:30 (180, 6)
Feb. 21 9 54.94 49 10.4 3.520 4.337 141 16.8 9.6 263.0 23:51 (180, 6)
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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. 14 7 58.90 20 59.1 3.243 4.147 153 16.7 9.1 317.0 22:23 (180, 34)
Feb. 21 7 56.09 21 44.1 3.309 4.159 145 16.8 7.9 321.3 21:52 (180, 33)
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It keeps 17 mag until early summer, and observable in good condition brighter than 18 mag until October.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 14 18 45.83 20 56.9 6.184 5.695 56 16.8 13.7 46.7 3:59 (246, -3)
Feb. 21 18 50.65 22 4.4 6.154 5.722 59 16.8 13.6 43.0 4:08 (241, 2)
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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. 14 17 3.36 40 22.3 5.831 5.824 84 17.0 11.4 354.7 3:59 (217, 0)
Feb. 21 17 2.32 41 44.3 5.774 5.833 88 17.0 12.2 349.2 4:08 (211, 4)
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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. 14 20 45.88 50 16.8 6.684 6.331 65 17.2 13.4 68.2 3:59 (230,-37)
Feb. 21 20 54.91 50 53.1 6.728 6.360 64 17.2 13.3 65.8 4:08 (228,-33)
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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. 14 9 41.79 29 38.1 1.312 2.276 163 17.2 19.9 349.8 0:10 (180, 26)
Feb. 21 9 39.94 31 49.7 1.312 2.258 157 17.3 18.2 350.0 23:36 (180, 23)
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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. 14 17 32.97 6 24.5 3.516 3.245 66 17.4 19.7 82.6 3:59 (246, 20)
Feb. 21 17 41.90 6 44.1 3.446 3.246 70 17.4 18.7 80.6 4:08 (241, 25)
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