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Image:
1999 Sept. 27
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Being very close to the earth, the comet goes southwards rapidly. Northern people can observe it only until mid October. On the other hand, southern people can observe it after when it appears in October.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 8 6.16 21 58.9 0.698 0.998 69 8.0 113.0 191.3 4:11 (226, 16)
Oct. 9 7 53.64 6 6.6 0.576 1.030 76 7.8 166.1 190.6 4:00 (232, 33)
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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. It will close down to 1 deg to a new comet C/1999 S3 (LINEAR) on Oct. 2 at 6h (UT).
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 0 53.29 52 1.5 0.830 1.668 131 9.0 126.7 235.2 0:17 (180, 3)
Oct. 9 23 50.61 42 22.3 0.877 1.768 140 9.5 115.9 221.9 22:35 (180, 13)
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Image:
1999 Sept. 5
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It tends to be brighter after perihelion passage, it will be around 9 mag still now. It will close down to 0.7 deg to a globular cluster M55 on Oct. 8 at 18h (UT).
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 19 18.72 -31 38.3 0.982 1.501 98 9.4 40.1 93.0 19:07 ( 7, 23)
Oct. 9 19 40.91 -31 41.3 1.034 1.514 96 9.6 40.8 88.7 18:58 ( 6, 23)
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Image:
1999 Sept. 23
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It was 13 mag by CCD in mid September. It keeps observable for Northern people. It locates low at dusk until late October, then it turns to appear at dawn. 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. 2 13 28.14 36 42.3 2.077 1.495 42 12.0 18.4 43.4 19:28 (117,-28)
Oct. 9 13 35.64 38 17.8 2.129 1.592 45 12.5 19.0 42.4 19:35 (117,-33)
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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. 2 11 8.44 -65 43.5 3.795 3.476 64 12.7 25.6 133.9 4:11 (332, 30)
Oct. 9 11 30.90 -67 46.4 3.797 3.467 63 12.6 26.1 132.3 4:00 (334, 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. 2 7 10.11 -71 27.5 9.528 9.471 83 12.7 7.1 175.8 4:11 (344, 49)
Oct. 9 7 10.35 -72 16.9 9.589 9.523 83 12.7 7.0 181.7 4:00 (346, 50)
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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. It will close down to 1 deg to comet C/1999 H1 (Lee) on Oct. 2 at 6h (UT).
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 0 45.68 52 1.6 1.164 1.973 131 13.3 63.0 307.9 0:08 (180, 3)
Oct. 9 0 3.80 55 50.0 1.166 1.956 129 13.2 60.4 296.6 22:49 (180, -1)
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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. 2 12 51.24 0 32.7 2.746 1.755 6 13.8 39.8 116.2 19:28 ( 79,-16)
Oct. 9 13 8.14 -1 31.2 2.714 1.722 5 13.6 40.8 115.9 19:35 ( 74,-19)
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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. 2 13 52.21 -18 28.3 2.862 2.000 25 13.7 4.3 86.4 19:28 ( 72, 7)
Oct. 9 13 54.39 -18 28.2 2.983 2.063 18 13.9 4.6 92.6 19:35 ( 68, 1)
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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. 2 21 15.69 29 46.9 3.864 4.536 126 14.0 12.5 179.3 20:32 (180, 25)
Oct. 9 21 16.14 28 18.5 3.885 4.514 123 14.0 12.8 173.0 20:05 (180, 27)
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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. 2 15 15.88 -26 29.2 6.786 6.130 45 14.1 9.7 99.6 19:28 ( 75, 27)
Oct. 9 15 21.00 -26 41.1 6.858 6.128 40 14.1 10.2 100.0 19:35 ( 72, 22)
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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. 2 9 6.54 8 49.4 2.650 2.187 52 14.4 26.1 110.3 4:11 (247, 16)
Oct. 9 9 17.74 7 46.0 2.622 2.227 56 14.6 24.7 111.4 4:00 (247, 17)
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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. 2 10 41.46 -1 9.6 4.322 3.464 27 14.6 15.1 146.6 4:11 (269, 3)
Oct. 9 10 45.15 -2 37.3 4.325 3.528 32 14.7 14.5 149.1 4:00 (269, 6)
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Image:
1999 Sept. 11
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Although it will be low in October and November, Northern people can observe it as 14 mag until 2000 April.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 14 18.99 35 2.9 4.146 3.525 46 14.9 9.9 170.2 19:28 (121,-18)
Oct. 9 14 20.13 33 58.3 4.173 3.533 44 14.9 9.0 165.0 19:35 (116,-23)
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Image:
1999 July 31
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Almost stellar object. The perihelion passage is in 2000 July, when it will be 13.5 mag. But the comet is in the southern sky. Northern people can observe it until October as 15 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 18 11.33 -29 34.6 4.132 4.152 84 15.3 7.3 175.4 19:28 ( 93, 64)
Oct. 9 18 12.09 -30 24.3 4.213 4.113 77 15.3 7.3 162.4 19:35 ( 87, 58)
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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. 2 15 40.77 43 23.5 7.607 7.212 63 15.5 10.6 156.3 19:28 (137,-10)
Oct. 9 15 43.66 42 17.3 7.628 7.204 61 15.5 10.4 152.3 19:35 (132,-14)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 0 5.51 8 33.2 1.098 2.093 171 15.6 14.7 256.0 23:21 (180, 46)
Oct. 9 23 59.30 8 7.9 1.156 2.138 165 15.9 12.5 253.2 22:47 (180, 47)
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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. 2 6 36.45 52 26.6 2.298 2.535 91 15.9 14.5 57.0 4:11 (196, 0)
Oct. 9 6 44.99 53 22.0 2.254 2.567 96 15.9 12.7 51.0 4:00 (194, -1)
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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. 2 5 1.17 34 38.1 3.770 4.222 110 16.1 9.1 300.7 4:11 (182, 20)
Oct. 9 4 55.94 35 10.8 3.584 4.146 117 15.9 11.5 293.9 3:48 (180, 20)
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New comet. Northern people cannot observe it until 2000 August. Because it is extremely far away, it keeps around 15 mag until 2003.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 3 6.11 -64 18.5 7.813 8.154 106 16.1 4.8 247.2 2:26 ( 0, 61)
Oct. 9 3 0.97 -64 28.9 7.802 8.131 105 16.1 5.1 257.8 1:53 ( 0, 61)
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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. 2 7 35.36 28 34.5 2.345 2.342 77 16.2 22.8 99.9 4:11 (217, 16)
Oct. 9 7 46.88 28 5.9 2.270 2.346 81 16.2 21.4 101.2 4:00 (216, 17)
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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. 2 3 18.28 49 0.8 1.148 1.882 122 16.3 31.6 271.4 2:39 (180, 6)
Oct. 9 2 54.26 48 45.8 1.130 1.934 130 16.3 36.0 262.2 1:47 (180, 6)
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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. 2 18 54.63 34 29.4 2.046 2.382 96 16.3 18.7 109.6 19:28 (164, 18)
Oct. 9 19 5.11 33 45.1 2.104 2.409 95 16.4 20.6 107.8 19:35 (158, 17)
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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. 2 19 21.27 3 26.4 5.133 5.443 102 16.4 2.8 306.7 19:28 (160, 50)
Oct. 9 19 20.55 3 38.2 5.252 5.455 96 16.5 1.9 333.7 19:35 (148, 46)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 7 2.71 43 35.9 1.781 1.989 86 16.7 25.5 76.0 4:11 (203, 6)
Oct. 9 7 18.12 44 17.4 1.735 2.007 90 16.7 23.5 75.5 4:00 (203, 5)
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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 19 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. 2 17 12.04 -11 26.4 1.254 1.311 70 17.3 22.3 94.2 19:28 (109, 43)
Oct. 9 17 23.50 -11 37.2 1.231 1.232 66 16.8 26.0 93.2 19:35 (104, 39)
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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. 2 2 30.38 46 13.9 1.061 1.867 129 17.2 9.0 23.8 1:50 (180, 9)
Oct. 9 2 32.06 47 3.1 0.991 1.832 134 16.9 5.9 13.1 1:24 (180, 8)
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It was 17.4 mag on Sept. 12, much fainter than the ephemeris. It tends to be at peak while after the perihelion passage, so it may be bright suddenly after this.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 2 5 7.84 13 1.9 1.269 1.876 110 17.1 15.9 90.3 4:11 (185, 42)
Oct. 9 5 14.65 13 0.7 1.222 1.888 116 17.1 12.5 91.1 4:00 (182, 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. 2 7 20.75 24 1.9 3.921 3.875 79 17.3 10.3 90.6 4:11 (216, 21)
Oct. 9 7 25.69 24 1.7 3.810 3.867 85 17.3 9.1 89.6 4:00 (214, 23)
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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. 2 19 49.21 -14 51.6 1.686 2.211 108 17.4 10.3 91.0 19:28 (165, 69)
Oct. 9 19 54.89 -14 50.7 1.732 2.179 102 17.4 13.3 88.0 19:35 (147, 67)
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