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Image:
1999 Sept. 27
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It will go down to the south soon. It is close by M46 and M47 on Oct. 15.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 7 36.57 -15 48.2 0.512 1.074 84 7.8 210.4 191.5 3:49 (244, 54)
Oct. 23 7 11.10 -39 28.7 0.532 1.128 89 8.2 195.1 195.4 3:39 (289, 72)
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Image:
1999 Sept. 5
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It tends to be brighter after perihelion passage, but actually it is 10 mag, a bit fainter.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 20 3.34 -31 23.9 1.090 1.530 94 9.8 41.2 84.8 19:42 ( 97, 74)
Oct. 23 20 25.69 -30 47.5 1.151 1.549 92 10.1 41.4 81.2 19:50 ( 96, 71)
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Image:
1999 Sept. 27
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Getting to be farther away from the earth. Although it locates in good positon until December, it will fade out rapidly.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 23 13.03 32 35.6 0.978 1.866 141 10.0 93.7 213.7 21:32 (180, 23)
Oct. 23 22 50.77 24 23.7 1.123 1.964 135 10.7 70.4 208.2 20:43 (180, 31)
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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)
Oct. 16 11 56.67 -69 46.5 3.802 3.459 62 12.6 26.5 129.8 3:49 (337, 30)
Oct. 23 12 26.60 -71 40.3 3.810 3.452 61 12.6 26.8 126.2 3:39 (339, 30)
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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)
Oct. 16 7 9.42 -73 5.8 9.651 9.574 82 12.7 7.0 187.9 3:49 (349, 50)
Oct. 23 7 7.19 -73 53.5 9.712 9.626 82 12.8 6.9 194.5 3:39 (351, 50)
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Image:
1999 Sept. 23
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It was 13 mag by CCD in mid September. It will be at dawn in November. It passes near by the North Pole in early February in 2000.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 13 43.42 39 59.5 2.169 1.689 48 12.9 19.9 40.7 19:42 (116,-39)
Oct. 23 13 51.48 41 49.6 2.198 1.786 53 13.3 21.0 38.6 19:50 (117,-44)
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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)
Oct. 16 13 25.54 -3 36.4 2.681 1.690 5 13.3 41.8 115.4 19:42 ( 70,-21)
Oct. 23 13 43.46 -5 42.2 2.648 1.660 5 13.1 42.8 114.9 3:39 (293,-21)
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Image:
1999 Sept. 27
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New comet. It is brightest now. It locates high until December and keeps 14 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 23 16.97 58 4.8 1.160 1.915 125 13.1 54.9 283.8 21:35 (180, -3)
Oct. 23 22 31.46 58 48.2 1.203 1.905 119 13.2 47.6 271.3 20:22 (180, -4)
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Image:
1999 Sept. 11
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Because it is far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 21 17.35 26 49.1 3.917 4.493 119 14.0 13.1 166.7 19:42 (179, 28)
Oct. 23 21 19.30 25 20.2 3.958 4.473 115 14.0 13.4 160.3 19:50 (170, 29)
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Image:
1999 June 12
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Not observable. It will appear at dawn in 2000 January.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 15 26.36 -26 53.9 6.921 6.126 34 14.1 10.6 100.3 19:42 ( 68, 16)
Oct. 23 15 31.92 -27 7.5 6.975 6.124 29 14.1 11.0 100.5 19:50 ( 64, 11)
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Image:
1999 July 30
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Not observable. It appears again at dawn as 15 mag in December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 13 56.66 -18 30.9 3.087 2.127 12 14.1 4.7 96.8 19:42 ( 63, -6)
Oct. 23 13 58.95 -18 35.8 3.174 2.193 7 14.3 4.7 100.0 19:50 ( 57,-11)
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Image:
1999 May 20
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Appearing at dawn. No observations have been reported since mid June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 10 48.43 -4 4.3 4.319 3.592 38 14.7 14.0 152.0 3:49 (268, 10)
Oct. 23 10 51.28 -5 30.5 4.304 3.657 44 14.8 13.5 155.6 3:39 (267, 14)
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Image:
1999 Sept. 20
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Appearing at dawn. It was observed as 14.4 mag on Sept. 19 by Kadota, 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)
Oct. 16 9 28.19 6 43.3 2.590 2.268 60 14.8 23.2 112.5 3:49 (247, 19)
Oct. 23 9 37.84 5 42.0 2.554 2.309 64 14.9 21.5 113.6 3:39 (246, 21)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 14 21.56 33 1.5 4.191 3.542 44 14.9 8.1 159.8 19:42 (112,-29)
Oct. 23 14 23.19 32 12.5 4.198 3.553 44 14.9 7.1 154.5 19:50 (107,-35)
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Image:
1999 July 31
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Almost stellar object. It will go down to the south soon. The perihelion passage is in 2000 July, when it will be 13.5 mag. But the comet is in the southern sky.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 18 13.71 -31 12.3 4.290 4.075 70 15.3 7.7 151.0 19:42 ( 82, 51)
Oct. 23 18 16.14 -31 58.7 4.362 4.037 64 15.3 8.3 141.9 19:50 ( 77, 45)
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First return of a split comet. The condition is best. It is much fainter than the early prediction. If it does not brighten rapidly, it will be about 18 mag still now.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 17 36.73 -11 46.1 1.199 1.154 62 16.1 29.6 92.1 19:42 (100, 35)
Oct. 23 17 51.73 -11 52.0 1.157 1.077 59 15.5 33.3 91.1 19:50 ( 97, 30)
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Image:
1999 Sept. 5
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Because it is extremely far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 15 46.82 41 14.9 7.645 7.197 59 15.5 10.1 148.4 19:42 (128,-18)
Oct. 23 15 50.20 40 16.7 7.657 7.190 58 15.5 9.8 144.6 19:50 (124,-23)
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New comet. It will be 3 mag in 2000 July. It keeps a good position until 2000 February when it will be 13 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 4 49.13 35 42.8 3.467 4.129 125 15.9 14.1 288.5 3:14 (180, 19)
Oct. 23 4 40.52 36 12.7 3.300 4.054 133 15.7 17.0 283.9 2:38 (180, 19)
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Not yet observed in this return. We can observe it until November as 15-16 mag. But it should be much fainter than the ephemeris.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 6 51.84 54 18.2 2.211 2.599 101 15.9 11.0 42.5 3:49 (192, -1)
Oct. 23 6 56.80 55 15.0 2.169 2.631 106 16.0 9.4 30.5 3:39 (191, -2)
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It was 16.9 mag on Sept. 19, a bit 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)
Oct. 16 7 57.54 27 36.1 2.195 2.350 86 16.1 19.8 102.5 3:49 (215, 18)
Oct. 23 8 7.25 27 5.6 2.120 2.356 90 16.1 18.1 103.8 3:39 (214, 19)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 23 54.35 7 43.8 1.226 2.184 158 16.2 9.6 250.2 22:15 (180, 47)
Oct. 23 23 50.86 7 23.3 1.307 2.229 150 16.5 6.4 246.1 21:44 (180, 48)
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Image:
1999 Feb. 6
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Mother asteroid of Geminids. No astrometric observations have been reported since 1996 December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 2 28.43 47 47.6 1.124 1.983 138 16.3 39.2 253.2 0:54 (180, 7)
Oct. 23 2 2.89 46 4.6 1.132 2.029 144 16.4 40.7 244.6 0:01 (180, 9)
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It was 17.6 mag on Sept. 25, fainter than expected. Although the position is best in December and January, it will be 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)
Oct. 16 2 32.23 47 32.4 0.927 1.799 138 16.7 2.7 342.4 0:57 (180, 7)
Oct. 23 2 31.03 47 37.4 0.871 1.767 142 16.4 2.9 244.3 0:28 (180, 7)
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New comet. 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)
Oct. 16 1 58.00 -40 20.0 4.564 5.264 130 16.5 12.2 229.5 0:23 ( 0, 85)
Oct. 23 1 52.13 -41 11.3 4.531 5.198 127 16.4 11.8 235.4 23:45 ( 0, 84)
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Image:
1999 May 31
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It will be over 45 deg high and 17 mag until mid November.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 19 20.48 3 50.3 5.373 5.468 90 16.5 1.9 15.7 19:42 (138, 42)
Oct. 23 19 21.01 4 3.3 5.493 5.481 84 16.6 2.6 41.9 19:50 (129, 37)
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Image:
1999 Sept. 11
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It will keep over 60 deg high until late November, when it will be 18 mag, so we can observe its fading out under good condition.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 19 16.54 33 1.1 2.164 2.438 93 16.5 22.2 106.1 19:42 (153, 16)
Oct. 23 19 28.80 32 18.4 2.228 2.470 91 16.7 23.6 104.5 19:50 (149, 14)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 7 32.29 44 57.4 1.690 2.026 94 16.7 21.2 74.4 3:49 (202, 5)
Oct. 23 7 45.05 45 37.1 1.647 2.047 98 16.7 18.8 72.3 3:39 (201, 5)
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Image:
1999 Apr. 8
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It keeps 16 mag at good position until 2000 May. No observations have been reported since May 20.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 10 1.52 19 7.0 4.834 4.367 56 16.8 13.0 80.6 3:49 (242, 5)
Oct. 23 10 7.67 19 23.5 4.762 4.390 62 16.8 12.3 77.8 3:39 (241, 7)
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New comet. It will be 14 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)
Oct. 16 22 56.35 29 14.2 4.057 4.864 140 16.9 17.4 255.6 21:17 (180, 26)
Oct. 23 22 47.70 28 41.4 4.068 4.817 134 16.9 16.3 252.3 20:41 (180, 26)
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It tends to be at peak while after the perihelion passage. It was 16.6 mag on Oct. 3, brighter than the ephemeris. Now it will be around 16 mag actually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 5 19.74 12 59.1 1.180 1.902 121 17.0 8.8 91.3 3:44 (180, 42)
Oct. 23 5 23.01 12 58.3 1.141 1.918 127 17.0 4.9 89.8 3:19 (180, 42)
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Image:
1999 Feb. 6
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It locates high at dawn now. It was already observed on Sept. 14.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 7 29.98 24 2.8 3.697 3.858 91 17.2 7.7 87.9 3:49 (211, 24)
Oct. 23 7 33.54 24 5.7 3.585 3.850 97 17.1 6.3 84.9 3:39 (208, 25)
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The magnitude in this ephemeris is based on the nucleus magnitude. It will be about 1-2 mag brighter actually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 0 29.95 -28 51.6 0.784 1.677 140 17.5 22.3 321.1 22:50 (180, 84)
Oct. 23 0 23.10 -26 33.0 0.777 1.651 136 17.3 25.1 331.9 22:16 (180, 81)
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It keeps 17.5 mag and 40 deg high until October. A stellar object.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 20 1.97 -14 44.9 1.779 2.147 97 17.4 16.1 85.8 19:42 (134, 63)
Oct. 23 20 10.33 -14 33.7 1.827 2.117 92 17.4 18.7 83.9 19:50 (124, 59)
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Image:
1999 Mar. 22
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Fading very slowly. After appearing at dawn, it was already observed on Sept. 13.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 6 59.59 61 36.3 5.427 5.690 100 17.7 13.0 334.0 3:49 (191, -8)
Oct. 23 6 52.95 62 58.6 5.358 5.717 106 17.7 13.9 327.6 3:39 (188, -9)
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Fading very slowly. No observations have been reported since 1998 December.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 3 12.28 11 58.5 3.844 4.752 152 18.0 7.4 257.9 1:37 (180, 43)
Oct. 23 3 8.62 11 47.3 3.813 4.761 160 18.0 8.3 258.6 1:06 (180, 43)
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Image:
1999 Feb. 6
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At aphelion now. No observations have been reported since Feb. 17.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 16 6 4.31 25 41.3 4.268 4.721 111 18.0 1.4 352.6 3:49 (190, 29)
Oct. 23 6 3.81 25 51.3 4.170 4.723 118 18.0 2.3 309.6 3:39 (186, 29)
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