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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 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. 19 3 5.36 77 10.4 0.673 1.267 97 5.2 38.4 14.7 20:19 (170,-26)
Feb. 26 3 39.89 81 5.4 0.744 1.304 96 5.5 34.6 29.3 20:09 (173,-28)
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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. 19 20 5.86 17 22.0 1.688 1.160 41 9.6 42.5 133.6 4:07 (256,-11)
Feb. 26 20 21.01 13 48.4 1.622 1.081 40 9.3 45.1 134.8 4:15 (256, -4)
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In the Southern Hemisphere, it keeps visible as bright as 9-10 mag until April, but it locates low after late March. In the Northern Hemisphere, it is not observable until June when it appears in the morning at 13 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 19 15 9.62 -62 12.6 0.841 1.262 86 10.1 122.2 159.8 4:07 (344, 61)
Feb. 26 16 30.51 -75 23.8 0.804 1.184 81 9.8 131.0 143.1 4:15 (350, 48)
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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. 19 3 32.44 -23 34.7 2.227 2.225 77 10.2 27.5 351.6 20:19 ( 97, 52)
Feb. 26 3 31.25 -20 38.3 2.419 2.308 71 10.6 23.3 357.9 20:09 ( 97, 47)
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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. 19 21 39.69 -16 21.7 2.396 1.427 8 11.9 49.9 77.0 4:07 (298, -9)
Feb. 26 22 3.13 -14 58.1 2.395 1.432 10 11.9 49.6 75.5 4:15 (294, -8)
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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. 19 4 3.53 14 38.0 1.957 2.213 91 12.1 22.3 76.8 20:19 (142, 31)
Feb. 26 4 14.29 15 13.0 2.058 2.237 87 12.3 23.3 77.8 20:09 (141, 30)
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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. 19 0 28.17 56 19.3 2.297 2.228 73 12.2 23.7 46.5 20:19 (142,-27)
Feb. 26 0 43.68 58 14.0 2.366 2.261 71 12.4 24.9 48.3 20:09 (144,-28)
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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. 19 12 53.19 17 12.9 0.793 1.676 140 12.2 9.2 358.9 2:58 (180, 38)
Feb. 26 12 52.02 18 15.6 0.798 1.710 145 12.5 9.7 332.3 2:29 (180, 37)
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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. 19 3 20.01 24 40.6 1.706 1.875 83 12.6 27.5 65.9 20:19 (139, 17)
Feb. 26 3 33.51 25 57.4 1.759 1.862 79 12.6 29.2 68.3 20:09 (139, 16)
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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. 19 3 1.29 5 40.5 1.250 1.370 74 13.0 50.7 55.4 20:19 (122, 29)
Feb. 26 3 21.41 8 59.3 1.275 1.369 73 12.9 51.9 57.4 20:09 (125, 27)
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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. 19 13 24.73 9 37.8 1.187 1.990 132 13.3 8.9 65.5 3:29 (180, 45)
Feb. 26 13 27.89 10 6.8 1.101 1.950 137 13.0 6.9 48.7 3:05 (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. 19 23 12.33 0 8.2 1.639 0.778 19 13.5 79.6 72.2 20:19 ( 81,-13)
Feb. 26 23 48.60 2 59.8 1.586 0.757 21 13.0 83.2 72.8 20:09 ( 86,-11)
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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. 19 0 29.18 11 25.0 6.437 5.733 41 13.7 10.8 69.1 20:19 (101, -4)
Feb. 26 0 34.10 11 53.0 6.508 5.734 35 13.8 11.3 68.6 20:09 (100, -7)
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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 in the morning low sky.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 19 23 27.21 55 0.3 4.217 3.960 68 13.8 16.4 102.4 20:19 (137,-35)
Feb. 26 23 39.87 54 38.7 4.355 4.034 64 13.9 15.5 99.5 20:09 (136,-35)
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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. 19 14 53.72 -35 18.3 1.713 2.100 98 14.4 38.1 248.6 4:07 (275, 79)
Feb. 26 14 29.52 -36 51.3 1.540 2.083 108 14.1 50.4 255.4 4:07 ( 0, 88)
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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. 19 10 20.78 -13 56.4 3.508 4.422 154 14.7 21.3 292.8 0:26 (180, 69)
Feb. 26 10 11.53 -12 55.8 3.566 4.496 157 14.8 20.9 295.4 23:44 (180, 68)
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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. 19 5 20.83 47 53.4 5.632 6.046 110 14.9 1.6 158.9 20:19 (171, 6)
Feb. 26 5 21.65 47 42.5 5.702 6.020 104 14.9 2.4 131.6 20:09 (168, 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. 19 1 36.68 54 59.1 1.901 1.971 79 15.0 26.4 62.8 20:19 (146,-18)
Feb. 26 1 56.99 56 21.3 1.954 1.983 77 15.0 28.0 65.5 20:09 (147,-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. 19 4 11.84 -17 36.0 4.393 4.454 87 15.2 6.1 301.7 20:19 (114, 57)
Feb. 26 4 9.70 -17 12.7 4.432 4.389 81 15.2 4.9 314.0 20:09 (110, 53)
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It was 18.5 mag still in mid January. The brightening is slower than expected. The ephemeris says it will brighten rapidly after this, and reach to 8 mag from July to August. However, it is not observable for a while. In the Northern Hemisphere, it will appear at dawn at 11.5 mag in late May, then it keeps observable for a long time after that. In the Southern Hemisphere, it only appears in the morning very low sky from late April to mid June, but not observable when the comet is bright.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 19 0 11.45 -23 57.2 2.817 2.041 31 15.5 27.1 14.7 20:19 ( 69, 12)
Feb. 26 0 15.15 -20 54.5 2.810 1.976 26 15.2 27.1 16.7 20:09 ( 70, 8)
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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. 19 10 23.95 31 45.8 1.894 2.841 159 15.4 11.6 308.8 0:29 (180, 23)
Feb. 26 10 18.99 32 31.1 1.923 2.856 155 15.4 10.5 302.5 23:52 (180, 22)
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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. 19 19 9.95 1 4.8 2.529 1.981 46 16.0 37.1 75.5 4:07 (261, 10)
Feb. 26 19 27.01 2 14.3 2.425 1.917 48 15.6 38.7 74.2 4:15 (258, 13)
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It will be observable in good condition at 16 mag until March. It was reported as 14.5 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 19 7 47.73 54 15.0 1.171 1.949 128 15.7 19.1 165.5 21:50 (180, 1)
Feb. 26 7 52.47 51 57.9 1.194 1.944 125 15.8 21.9 160.0 21:27 (180, 3)
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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. 19 10 38.01 42 59.6 3.063 3.934 147 16.1 15.6 263.3 0:43 (180, 12)
Feb. 26 10 28.37 42 41.2 3.142 4.002 146 16.2 15.1 257.2 0:06 (180, 12)
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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. 19 15 53.01 -17 37.3 3.213 3.370 90 16.2 10.8 106.7 4:07 (242, 60)
Feb. 26 15 57.71 -17 57.9 3.099 3.356 96 16.1 9.3 107.5 4:15 (231, 66)
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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. 19 2 52.89 50 57.0 2.633 2.766 87 16.1 13.6 234.7 20:19 (150, -7)
Feb. 26 2 46.10 50 7.7 2.785 2.786 79 16.4 9.8 230.6 20:09 (147, -9)
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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. 19 8 49.11 36 41.3 1.144 2.054 148 16.2 10.2 335.3 22:50 (180, 18)
Feb. 26 8 47.32 37 35.5 1.201 2.074 142 16.4 6.5 343.9 22:21 (180, 17)
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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. 19 18 17.30 -1 40.2 4.044 3.626 58 16.6 7.1 352.1 4:07 (256, 22)
Feb. 26 18 16.46 -0 47.8 3.906 3.604 65 16.5 8.3 341.4 4:15 (248, 29)
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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. 19 5 25.28 25 34.4 2.340 2.858 111 16.7 5.8 107.5 20:19 (167, 28)
Feb. 26 5 28.74 25 22.8 2.423 2.852 105 16.7 8.0 101.3 20:09 (163, 28)
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It keeps visible as bright as 12-13 mag for a long time from May to September. The condition is good in the Southern Hemisphere, but it locates very low 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. 19 15 3.50 -27 53.2 1.823 2.204 98 17.2 21.3 120.8 4:07 (245, 75)
Feb. 26 15 13.00 -29 9.4 1.707 2.163 103 16.9 20.5 122.0 4:15 (233, 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. 19 2 59.71 50 28.6 1.392 1.678 87 17.0 36.4 77.3 20:19 (151, -6)
Feb. 26 3 25.92 51 13.7 1.485 1.728 86 17.2 35.7 81.3 20:09 (153, -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. 19 10 39.29 32 31.0 1.763 2.704 157 17.1 14.2 297.8 0:45 (180, 23)
Feb. 26 10 32.36 33 10.4 1.813 2.745 155 17.2 13.0 290.8 0:10 (180, 22)
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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. 19 14 37.07 26 59.1 4.170 4.684 115 17.3 17.0 1.0 4:07 (189, 28)
Feb. 26 14 36.82 29 0.9 4.060 4.640 120 17.2 17.8 356.0 4:14 (180, 26)
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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. 19 4 51.79 48 13.0 5.327 5.671 105 17.2 0.6 105.0 20:19 (166, 5)
Feb. 26 4 52.63 48 12.0 5.402 5.646 99 17.2 1.8 93.7 20:09 (163, 4)
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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. 19 3 32.72 21 12.9 2.712 2.815 85 17.4 13.3 56.8 20:19 (139, 22)
Feb. 26 3 38.79 22 4.3 2.781 2.788 80 17.4 15.0 60.4 20:09 (137, 19)
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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. 12.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Feb. 19 2 40.06 -10 50.2 1.625 1.523 66 17.4 47.1 70.1 20:19 (103, 35)
Feb. 26 2 59.55 -9 5.7 1.806 1.650 64 18.0 40.7 70.2 20:09 (105, 35)
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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. 19 9 19.66 41 14.3 3.541 4.411 148 17.5 6.6 272.9 23:21 (180, 14)
Feb. 26 9 15.78 41 12.9 3.580 4.411 142 17.5 5.9 263.0 22:49 (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. 19 4 29.67 20 35.2 1.513 1.927 98 17.7 24.6 62.6 20:19 (151, 29)
Feb. 26 4 41.10 21 51.2 1.586 1.932 94 17.9 26.0 66.3 20:09 (151, 27)
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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. 19 11 5.00 -0 17.1 3.558 4.508 162 17.8 18.1 254.1 1:10 (180, 55)
Feb. 26 10 56.67 -0 51.0 3.520 4.496 169 17.8 18.7 255.5 0:34 (180, 56)
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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. 19 13 49.78 50 26.7 6.246 6.803 120 17.8 12.2 309.7 3:54 (180, 5)
Feb. 26 13 42.40 51 19.1 6.239 6.829 122 17.8 12.7 304.3 3:20 (180, 4)
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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. 19 16 41.42 37 12.7 7.118 7.198 90 17.8 7.3 339.2 4:07 (211, 9)
Feb. 26 16 39.57 38 1.7 7.061 7.212 94 17.8 8.0 332.7 4:15 (204, 12)
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