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Image:
2000 Jan. 8
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The component A brightened in late December and reached to 9 mag. On the other hand, the component D will be fainter than 16 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 2 32.02 -12 14.5 0.333 1.039 90 10.9 157.5 81.8 18:45 ( 4, 43)
Jan. 29 3 38.77 -9 18.3 0.377 1.115 100 11.6 126.9 78.2 19:10 ( 0, 46)
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Not observable around the perihelion passage at all. When it appears at dawn in 2000 June, it will be already fainter than 15 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 18 27.93 -24 39.0 2.347 1.513 24 11.8 46.8 93.1 5:37 (300, -1)
Jan. 29 18 51.82 -24 48.9 2.338 1.523 26 11.9 46.2 90.8 5:34 (300, 0)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 10 24.28 10 46.4 1.099 2.000 147 12.2 97.7 299.3 2:24 ( 0, 66)
Jan. 29 9 39.37 16 31.4 1.039 2.010 166 12.1 111.8 296.5 1:12 ( 0, 71)
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Image:
1998 Dec. 5
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Only southern people can observe it. It will appear again in 2000 August as 13 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 20 47.21 -66 5.9 4.077 3.474 46 12.8 21.3 47.2 18:45 ( 29,-32)
Jan. 29 21 4.12 -64 24.9 4.090 3.485 46 12.8 20.5 46.2 18:51 ( 31,-33)
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Only southern people can observe it. Northern people can never see it again.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 4 55.30 -76 59.4 10.430 10.284 78 13.2 5.5 311.0 20:50 ( 0,-22)
Jan. 29 4 47.49 -76 31.9 10.475 10.334 79 13.2 5.4 320.1 20:14 ( 0,-21)
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Image:
2000 Jan. 8
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It will be 3 mag in 2000 July. It keeps a good position until 2000 February when it will be 13 mag. It keeps the same brightness recently.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 1 47.27 29 6.8 2.774 3.007 94 14.0 14.6 236.5 18:45 ( 70, 75)
Jan. 29 1 41.55 28 14.0 2.826 2.922 85 13.9 11.7 233.3 18:51 ( 80, 67)
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Image:
2000 Jan. 1
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It is 13 mag visually, but it is faint as 16 mag by CCD.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 13 44.84 -10 47.0 1.663 1.978 93 14.0 25.8 136.2 5:37 (358, 44)
Jan. 29 13 52.83 -12 56.9 1.601 1.988 97 14.0 24.2 139.9 5:23 ( 0, 42)
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Image:
1999 June 12
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Appearing at dawn, however, it is too low to observe.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 16 48.46 -30 12.7 6.722 6.098 47 14.0 9.7 100.5 5:37 (320, 11)
Jan. 29 16 53.46 -30 24.8 6.634 6.096 53 14.0 9.1 100.8 5:34 (323, 13)
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Image:
2000 Jan. 8
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Now at the peak. It is around 13 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 3 32.54 19 34.4 0.887 1.573 114 14.1 32.7 116.1 19:29 ( 0, 74)
Jan. 29 3 47.42 18 1.5 0.940 1.579 110 14.3 33.3 111.4 19:16 ( 0, 73)
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Image:
1999 Dec. 30
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Because it is far away, it keeps 14 mag until late 2000, while Northern people can observe it under good condition. It is diffused.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 22 35.21 13 24.8 4.866 4.273 48 14.2 16.9 98.5 18:45 ( 86, 29)
Jan. 29 22 43.33 13 9.6 4.928 4.262 43 14.3 17.2 96.2 18:51 ( 90, 24)
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Image:
1999 Oct. 24
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Only southern people can observe it. Northern people can never see it again. Fading out very slowly after the approach to the earth, however, it faded out rapidly in December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 0 23.16 -62 46.2 2.495 2.174 59 14.6 10.2 44.6 18:45 ( 16,-12)
Jan. 29 0 30.96 -61 59.2 2.608 2.260 58 15.0 10.4 53.7 18:51 ( 19,-13)
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Image:
2000 Jan. 1
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It will keep 14 mag until 2000 March. It is 13 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 14 18.79 34 40.5 3.482 3.783 100 14.8 14.2 313.4 5:37 (270, 82)
Jan. 29 14 12.14 35 51.4 3.406 3.807 106 14.8 16.7 309.0 5:34 (243, 88)
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Image:
1999 July 31
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It will reach to 13.5 mag in June, but will not be observable 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)
Jan. 22 19 41.86 -41 34.9 4.495 3.608 22 14.8 16.8 115.5 5:37 (306,-23)
Jan. 29 19 51.50 -42 26.7 4.433 3.580 26 14.8 17.3 116.2 5:34 (308,-21)
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Image:
2000 Jan. 8
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Rapidly fading since December. It will be fainter than this ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 1 40.61 19 7.0 1.276 1.598 88 15.1 39.4 50.9 18:45 ( 48, 68)
Jan. 29 1 56.17 21 54.5 1.346 1.617 86 15.3 39.3 54.0 18:51 ( 61, 67)
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It is expected to be bright as 7 mag in late 2000. It keeps extremely low until 2000 January for nothern people, then they cannot observe it until 2000 December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 1 11.52 -39 17.9 4.656 4.345 65 15.2 6.9 29.3 18:45 ( 19, 12)
Jan. 29 1 13.95 -38 35.2 4.656 4.275 61 15.1 7.8 37.5 18:51 ( 25, 11)
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Image:
1999 Dec. 30
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It has got diffused in December and now fading rapidly.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 20 38.90 57 11.4 2.068 2.085 77 15.2 14.9 21.3 18:45 (142, 28)
Jan. 29 20 43.82 58 57.1 2.109 2.120 77 15.7 17.2 19.2 5:34 (214, 25)
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Image:
2000 Jan. 1
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It will be observable as 15 mag with a good condition.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 16 34.70 34 52.6 7.309 7.126 75 15.3 3.8 76.9 5:37 (257, 54)
Jan. 29 16 36.62 35 0.7 7.245 7.124 79 15.3 3.3 64.5 5:34 (259, 59)
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Image:
2000 Jan. 3
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Although it has been brightening after perihelion passage, it turned to be 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)
Jan. 22 3 59.25 40 33.9 1.239 1.953 122 15.4 24.3 133.7 19:55 (180, 85)
Jan. 29 4 10.40 38 40.8 1.312 1.977 118 15.5 24.7 128.8 19:39 (180, 86)
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Image:
1999 Dec. 27
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Gradually fading. The altitude in the Northerm Hemisphere will not high after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 10 25.08 -21 6.1 3.810 4.483 127 15.4 15.5 248.9 2:23 ( 0, 34)
Jan. 29 10 17.57 -21 40.6 3.806 4.546 133 15.5 16.0 254.5 1:48 ( 0, 33)
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Image:
2000 Jan. 8
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It will be 13 mag at good position in 2000 September.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 22 14.63 24 34.3 4.741 4.226 53 15.6 4.3 54.1 18:45 (100, 31)
Jan. 29 22 16.57 24 55.1 4.766 4.182 48 15.6 5.3 49.8 18:51 (104, 24)
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Image:
1999 Dec. 27
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Appearing at dawn. It was 15.3 mag on Dec. 21 by KenIchi Kadota, Ageo, as bright as the ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 13 50.75 -18 33.7 2.950 3.093 88 15.7 13.8 285.1 5:37 (357, 36)
Jan. 29 13 43.49 -18 4.2 2.875 3.163 97 15.7 17.0 286.5 5:14 ( 0, 37)
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Image:
2000 Jan. 15
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It is observed as bright as 15-16 mag now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 7 5.59 27 19.2 2.799 3.750 162 15.7 9.4 280.9 23:00 ( 0, 82)
Jan. 29 7 0.98 27 30.2 2.829 3.743 154 15.7 8.3 279.5 22:28 ( 0, 83)
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Image:
1999 Dec. 29
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It keeps 16 mag and the good position until February. It is 14 mag visually, much brighter than this ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 8 15.84 23 3.0 1.552 2.535 176 16.0 12.0 260.5 0:14 ( 0, 78)
Jan. 29 8 9.98 22 47.9 1.578 2.555 170 16.1 11.4 258.3 23:36 ( 0, 78)
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Image:
2000 Jan. 3
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After the perihelion passage, it has been getting brighter. But now it is fading since January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 4 46.16 18 22.1 1.475 2.248 131 16.1 6.7 32.7 20:41 ( 0, 73)
Jan. 29 4 48.65 19 1.4 1.571 2.280 124 16.3 8.5 49.3 20:16 ( 0, 74)
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Image:
1999 Dec. 9
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It keeps 16 mag at good position until 2000 May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 10 37.60 30 4.3 3.872 4.720 146 16.2 11.2 339.2 2:36 ( 0, 85)
Jan. 29 10 35.15 31 17.0 3.859 4.748 151 16.2 11.4 334.0 2:06 ( 0, 86)
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Image:
2000 Jan. 8
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New comet. It will reach to 13 mag in 2000 November. It will be brightening gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 2 30.77 65 52.2 4.607 5.026 109 16.3 16.9 202.8 18:45 (176, 59)
Jan. 29 2 24.63 64 3.7 4.644 4.979 104 16.3 16.0 196.8 18:51 (167, 60)
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Image:
1999 May 12
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Appearing at dawn. No observations reported since June 13. It may be much fainter than this ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 14 47.09 -35 12.0 3.660 3.487 72 16.7 12.9 127.3 5:37 (346, 18)
Jan. 29 14 52.58 -36 5.7 3.607 3.528 77 16.8 11.6 130.4 5:34 (350, 18)
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Image:
2000 Jan. 15
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New comet. It keeps the good condition until March, but it will fade out after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 6 15.39 17 50.6 2.284 3.186 151 16.8 5.9 236.2 22:10 ( 0, 73)
Jan. 29 6 13.42 17 28.9 2.366 3.218 144 16.9 4.2 226.8 21:40 ( 0, 72)
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Although it has passed the perihelion in 1998 September, it is unexpectedly bright still now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 3 6.81 -19 48.6 5.421 5.593 94 16.9 10.0 353.1 19:02 ( 0, 35)
Jan. 29 3 6.54 -18 39.2 5.569 5.648 89 17.0 9.9 0.4 18:51 ( 5, 36)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 7 28.07 50 13.4 1.530 2.423 148 17.0 13.5 235.8 23:22 (180, 75)
Jan. 29 7 20.73 49 13.7 1.586 2.458 144 17.1 13.0 224.2 22:47 (180, 76)
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Image:
1999 Dec. 23
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It was extremely diffused in December. No observations reported in January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 0 21.59 -9 2.6 2.264 1.976 60 17.0 34.8 62.8 18:45 ( 46, 34)
Jan. 29 0 36.03 -7 12.3 2.365 2.017 57 17.5 34.1 62.9 18:51 ( 51, 32)
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Retrograde asteroid. It will be overhead as 17 mag until March.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 13 16.51 13 29.4 1.992 2.478 107 17.2 35.9 305.8 5:14 ( 0, 68)
Jan. 29 13 0.62 16 7.4 1.871 2.499 118 17.1 44.0 303.3 4:31 ( 0, 71)
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It will pass the perihelion in 2002 February and it will brighten gradually after this. But the altitude is highest now and keeps low after this for the Northern people.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 13 17.78 -23 41.0 7.667 7.800 94 17.3 5.3 206.1 5:15 ( 0, 31)
Jan. 29 13 16.34 -24 13.6 7.519 7.769 101 17.3 5.6 216.2 4:46 ( 0, 31)
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Image:
1999 Nov. 19
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No observations reported since mid December. Only few observations reported even before that.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 10 11.40 -0 18.2 1.996 2.857 144 17.3 10.6 288.4 2:10 ( 0, 55)
Jan. 29 10 6.32 0 9.6 1.988 2.899 152 17.4 12.5 291.4 1:37 ( 0, 55)
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Image:
1999 June 30
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It keeps the good condition until autumn. It will fade out gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 17 4.16 14 2.4 6.642 6.172 57 17.3 11.5 60.0 5:37 (281, 40)
Jan. 29 17 8.82 14 44.6 6.603 6.205 62 17.3 11.3 56.0 5:34 (284, 44)
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Image:
1999 Nov. 13
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Although the condition is good, it will fade out gradually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 3 14.23 14 18.7 5.460 5.850 108 17.4 7.3 307.4 19:09 ( 0, 69)
Jan. 29 3 11.79 14 50.0 5.618 5.889 101 17.4 6.2 316.4 18:51 ( 8, 70)
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Although the condition is good until April, it will be only 17 mag at best.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 9 56.44 1 36.7 2.130 3.016 149 17.4 8.8 242.8 1:55 ( 0, 57)
Jan. 29 9 52.43 1 11.7 2.102 3.028 155 17.4 9.8 251.4 1:23 ( 0, 56)
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Image:
1999 Jan. 22
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A Centaur asteroid. The perihelion passage is in 2004. It will keep the current brightness over 10 years after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 9 52.87 -0 8.6 12.513 13.363 148 17.5 3.0 271.5 1:51 ( 0, 55)
Jan. 29 9 51.40 -0 7.3 12.459 13.360 155 17.5 3.3 274.8 1:22 ( 0, 55)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 1 43.95 21 28.0 6.827 6.907 90 17.6 2.5 27.9 18:45 ( 51, 70)
Jan. 29 1 44.77 21 44.4 6.908 6.873 83 17.6 3.3 39.9 18:51 ( 65, 65)
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Image:
1999 Nov. 13
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Because it is extremely far away, it keeps brighter than 17 mag until late 2000.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 2 7.17 5 33.0 5.520 5.612 90 17.7 5.1 183.6 18:45 ( 21, 59)
Jan. 29 2 7.30 4 59.4 5.630 5.598 83 17.7 4.6 168.8 18:51 ( 35, 55)
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The best condition of this comet is until March, at 45 deg high as 18 mag for the Northern people.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 7 57.34 -15 15.7 3.311 4.153 144 17.8 9.2 297.9 23:51 ( 0, 40)
Jan. 29 7 53.50 -14 41.3 3.320 4.165 144 17.8 9.5 305.5 23:20 ( 0, 40)
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Both the brightness and altitude are at best now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 14 25.89 65 39.0 3.421 3.824 106 17.8 27.0 347.5 5:37 (189, 59)
Jan. 29 14 16.92 68 45.2 3.395 3.834 109 17.8 28.2 341.6 5:34 (182, 56)
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Only 8 observations reported during one month in 1984. The orbit and brightness are extremely uncertain. The ephemeris says it is highest and brightest until April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 22 9 23.95 7 49.3 2.296 3.235 159 17.9 8.9 278.0 1:22 ( 0, 63)
Jan. 29 9 19.51 8 0.3 2.246 3.212 166 17.8 10.1 280.8 0:50 ( 0, 63)
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