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Image:
1999 Dec. 23
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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. 8 23 52.73 -14 43.8 0.337 0.901 66 10.0 156.1 91.1 21:02 ( 93, 30)
Jan. 15 1 12.58 -14 17.2 0.319 0.967 77 10.3 171.0 86.5 20:58 (102, 41)
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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. 8 17 39.77 -23 38.6 2.371 1.501 21 11.8 47.6 97.7 3:10 (301, -2)
Jan. 15 18 3.86 -24 15.6 2.358 1.505 23 11.8 47.3 95.4 3:18 (300, 1)
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Image:
1999 Dec. 21
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Rapidly brightening. It will be 11 mag in January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 11 26.83 1 36.0 1.360 1.989 115 12.6 57.4 301.7 3:10 (208, 50)
Jan. 15 11 0.04 5 39.5 1.211 1.993 130 12.4 77.1 300.9 3:18 (183, 49)
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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. 8 20 6.02 -69 31.1 4.040 3.458 47 12.8 23.0 51.0 21:02 ( 19, 23)
Jan. 15 20 28.04 -67 48.4 4.060 3.465 47 12.8 22.2 48.8 20:58 ( 20, 22)
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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. 8 5 15.77 -77 40.8 10.335 10.184 78 13.2 5.8 292.0 22:05 ( 0, 47)
Jan. 15 5 4.76 -77 22.6 10.384 10.234 78 13.2 5.7 301.6 21:26 ( 0, 48)
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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. 8 0 11.38 -64 44.1 2.242 2.002 63 13.7 10.4 22.0 21:02 ( 31, 44)
Jan. 15 0 16.52 -63 41.0 2.373 2.088 61 14.1 10.1 34.0 20:58 ( 33, 42)
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Image:
1999 Dec. 23
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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. 8 3 5.37 23 30.7 0.798 1.570 123 13.8 31.3 128.3 21:02 (163, 30)
Jan. 15 3 18.44 21 23.6 0.840 1.570 118 14.0 32.0 121.7 20:58 (159, 31)
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Image:
1999 Dec. 21
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It keeps 15 mag until April. It is about 13.5 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 13 26.16 -6 25.5 1.794 1.964 84 14.1 28.6 131.0 3:10 (248, 38)
Jan. 15 13 35.91 -8 36.5 1.728 1.970 88 14.0 27.2 133.3 3:18 (244, 44)
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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. 8 16 37.68 -29 47.2 6.874 6.102 35 14.1 10.6 100.3 3:10 (298, 13)
Jan. 15 16 43.19 -30 0.2 6.803 6.100 41 14.1 10.2 100.3 3:18 (294, 18)
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Image:
1999 Dec. 23
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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. 8 2 3.74 31 12.4 2.679 3.175 111 14.2 20.8 242.4 21:02 (151, 17)
Jan. 15 1 54.62 30 6.8 2.724 3.092 102 14.1 17.7 239.5 20:58 (144, 15)
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Image:
1999 Dec. 10
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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. 8 22 19.49 14 10.2 4.729 4.296 58 14.2 16.4 104.1 21:02 (103, -6)
Jan. 15 22 27.26 13 44.9 4.800 4.284 53 14.2 16.7 101.1 20:58 (100, -9)
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Image:
1999 Dec. 23
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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. 8 20 30.66 54 31.0 1.972 2.022 78 14.3 9.9 25.5 21:02 (135,-42)
Jan. 15 20 34.47 55 42.6 2.022 2.052 77 14.8 12.5 23.5 20:58 (137,-45)
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Image:
1999 Dec. 23
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Although it was bright as 12 mag visually in October and November, it faded out in December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 1 12.35 12 56.3 1.146 1.568 94 14.7 39.2 44.2 21:02 (130, 26)
Jan. 15 1 25.98 16 7.3 1.209 1.581 91 14.9 39.4 47.6 20:58 (131, 22)
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Image:
1999 Dec. 9
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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. 8 14 27.67 32 38.8 3.646 3.737 87 14.8 9.4 323.0 3:10 (229, 0)
Jan. 15 14 23.90 33 35.8 3.563 3.759 93 14.8 11.8 318.0 3:18 (222, 5)
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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. 8 19 23.65 -39 58.2 4.590 3.665 17 15.0 15.8 114.9 21:02 ( 35, -3)
Jan. 15 19 32.57 -40 45.6 4.547 3.636 19 14.9 16.3 115.1 3:18 (324, -1)
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Image:
1999 Dec. 7
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Still brightening after perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 3 39.69 44 46.9 1.119 1.915 131 15.1 23.0 145.3 21:02 (174, 10)
Jan. 15 3 48.92 42 37.4 1.176 1.934 126 15.2 23.7 139.2 20:58 (171, 12)
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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. 8 1 9.12 -40 38.9 4.640 4.484 74 15.3 5.5 5.7 21:02 ( 67, 54)
Jan. 15 1 9.90 -39 59.3 4.650 4.415 70 15.3 6.1 18.9 20:58 ( 67, 49)
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Image:
1999 Dec. 9
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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. 8 10 38.22 -19 31.2 3.852 4.357 114 15.3 14.1 236.0 3:10 (199, 74)
Jan. 15 10 32.01 -20 22.7 3.826 4.420 121 15.4 14.9 242.8 2:58 (180, 75)
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Image:
1999 Oct. 10
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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. 8 16 29.72 34 49.0 7.424 7.133 69 15.4 5.0 94.4 3:10 (242,-21)
Jan. 15 16 32.39 34 48.6 7.368 7.130 72 15.4 4.4 86.6 3:18 (238,-16)
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Image:
1999 Dec. 21
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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. 8 14 1.16 -19 9.7 3.099 2.953 72 15.6 8.1 281.7 3:10 (268, 38)
Jan. 15 13 56.61 -18 55.1 3.026 3.023 80 15.6 10.8 283.6 3:18 (261, 46)
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Image:
1999 Nov. 28
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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. 8 22 11.88 24 12.4 4.662 4.315 63 15.7 1.9 71.4 21:02 (110,-14)
Jan. 15 22 13.04 24 20.0 4.705 4.270 58 15.7 3.1 60.0 20:58 (107,-18)
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Image:
1999 Dec. 7
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After the perihelion passage, it has been getting brighter. But now it is at peak as 15 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 4 45.58 17 2.7 1.307 2.185 144 15.7 6.2 335.6 21:35 (180, 38)
Jan. 15 4 45.11 17 42.4 1.387 2.216 137 15.9 5.7 6.1 21:08 (180, 37)
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Image:
1999 Dec. 7
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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. 8 8 27.64 23 26.8 1.540 2.496 162 15.9 10.8 262.0 1:21 (180, 32)
Jan. 15 8 21.90 23 15.6 1.539 2.515 171 15.9 11.8 261.8 0:48 (180, 32)
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Image:
1999 Dec. 23
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It will be about 13 mag still now, however it is extremely diffused.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 23 51.63 -12 50.1 2.063 1.897 66 16.1 36.1 62.9 21:02 ( 94, 28)
Jan. 15 0 6.81 -10 55.3 2.163 1.936 63 16.6 35.5 62.7 20:58 ( 94, 25)
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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. 8 10 40.54 27 38.9 3.937 4.666 133 16.2 10.3 352.0 3:10 (186, 27)
Jan. 15 10 39.42 28 51.0 3.898 4.693 139 16.2 10.8 345.1 3:05 (180, 26)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 22 42.13 0 9.4 3.415 2.970 55 16.3 9.4 101.9 21:02 ( 95, 6)
Jan. 15 22 46.51 -0 0.8 3.605 3.056 49 16.5 9.6 96.1 20:58 ( 92, 2)
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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. 8 2 52.28 69 28.7 4.587 5.142 119 16.4 18.5 216.4 21:02 (173,-15)
Jan. 15 2 39.77 67 41.9 4.604 5.096 114 16.4 17.8 209.3 20:58 (169,-15)
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Image:
1999 Dec. 9
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Extremely diffused and hard to observe. It is 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. 8 16 1.01 75 25.9 2.413 2.793 102 16.4 34.5 19.7 3:10 (197,-33)
Jan. 15 16 27.10 79 9.3 2.479 2.879 104 16.7 33.8 21.5 3:18 (193,-33)
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Image:
1999 Dec. 6
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It is 15 mag recently, 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. 8 7 15.88 26 49.1 2.784 3.765 175 16.5 10.3 284.0 0:10 (180, 28)
Jan. 15 7 10.64 27 5.4 2.784 3.757 170 16.5 10.1 282.4 23:32 (180, 28)
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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. 8 14 33.96 -33 18.0 3.757 3.404 61 16.7 15.4 123.3 3:10 (288, 38)
Jan. 15 14 40.86 -34 16.1 3.711 3.445 66 16.7 14.2 125.0 3:18 (286, 44)
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Image:
1999 Sept. 20
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Fading out gradually. It was a bit brighter than the ephemeris recently.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 7 46.47 51 28.5 1.451 2.356 150 16.7 13.4 257.6 0:40 (180, 4)
Jan. 15 7 36.85 50 59.3 1.485 2.389 150 16.8 13.7 246.8 0:03 (180, 4)
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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. 8 3 9.37 -22 7.6 5.135 5.484 105 16.7 10.5 338.0 21:02 (129, 71)
Jan. 15 3 7.75 -20 58.9 5.276 5.539 100 16.8 10.2 345.6 20:58 (120, 66)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 10 18.92 -0 46.9 2.044 2.773 129 17.0 5.8 276.9 3:10 (181, 56)
Jan. 15 10 15.66 -0 37.2 2.015 2.815 137 17.2 8.4 284.2 2:41 (180, 56)
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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. 8 3 21.31 13 18.0 5.160 5.771 124 17.2 9.9 295.4 21:02 (164, 40)
Jan. 15 3 17.40 13 48.0 5.304 5.809 116 17.3 8.5 300.6 20:58 (156, 38)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Jan. 8 1 44.31 21 2.6 6.373 6.689 104 17.3 1.7 340.2 21:02 (142, 24)
Jan. 15 1 44.29 21 14.9 6.452 6.653 97 17.3 2.0 14.4 20:58 (137, 21)
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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. 8 13 38.10 9 20.8 2.268 2.440 87 17.4 22.4 310.9 3:10 (237, 25)
Jan. 15 13 28.79 11 13.9 2.127 2.458 97 17.3 28.6 308.3 3:18 (226, 31)
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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. 8 9 55.42 -0 6.8 12.658 13.368 134 17.5 2.4 261.9 2:49 (180, 55)
Jan. 15 9 54.22 -0 8.4 12.579 13.365 141 17.5 2.7 267.3 2:20 (180, 55)
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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. 8 10 2.24 2 46.5 2.250 3.024 134 17.6 6.9 213.9 2:55 (180, 52)
Jan. 15 9 59.95 2 9.2 2.201 3.035 141 17.5 7.7 230.3 2:26 (180, 53)
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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. 8 2 8.67 6 54.3 5.308 5.647 105 17.6 7.2 204.4 21:02 (139, 39)
Jan. 15 2 7.59 6 11.1 5.415 5.632 97 17.7 6.0 195.5 20:58 (132, 36)
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