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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. 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. 9 7 53.64 6 6.7 0.576 1.030 76 7.8 166.1 190.6 4:36 (306, 49)
Oct. 16 7 36.57 -15 48.2 0.512 1.074 84 7.8 210.4 191.5 4:42 (336, 36)
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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. 9 23 50.62 42 22.4 0.877 1.768 140 9.5 115.7 221.9 22:35 (180, 83)
Oct. 16 23 13.03 32 35.6 0.978 1.866 141 10.0 93.7 213.7 21:32 ( 0, 87)
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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. 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. 9 19 40.91 -31 41.3 1.034 1.514 96 9.6 40.8 88.7 18:58 ( 6, 23)
Oct. 16 20 3.34 -31 23.9 1.090 1.530 94 9.8 41.2 84.8 18:49 ( 5, 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. 9 13 35.64 38 17.8 2.129 1.592 45 12.5 19.0 42.4 18:58 (126, 15)
Oct. 16 13 43.42 39 59.5 2.169 1.689 48 12.9 19.9 40.7 18:49 (129, 15)
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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. 9 11 30.90 -67 46.4 3.797 3.467 63 12.6 26.1 132.3 4:36 (334,-31)
Oct. 16 11 56.67 -69 46.5 3.802 3.459 62 12.6 26.5 129.8 4:42 (336,-31)
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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. 9 7 10.35 -72 16.9 9.589 9.523 83 12.7 7.0 181.7 4:36 (353,-18)
Oct. 16 7 9.42 -73 5.8 9.651 9.574 82 12.7 7.0 187.9 4:42 (356,-18)
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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. 9 0 3.74 55 49.4 1.137 1.929 129 13.1 60.5 296.4 22:49 (180, 69)
Oct. 16 23 16.97 58 4.8 1.160 1.915 125 13.1 54.9 283.8 21:35 (180, 67)
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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. 9 13 8.14 -1 31.2 2.714 1.722 5 13.6 40.8 115.9 18:58 ( 97,-13)
Oct. 16 13 25.54 -3 36.4 2.681 1.690 5 13.3 41.8 115.4 18:49 ( 96,-15)
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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. 9 13 54.39 -18 28.2 2.983 2.063 18 13.9 4.6 92.6 18:58 ( 77,-13)
Oct. 16 13 56.66 -18 30.9 3.087 2.127 12 14.1 4.7 96.8 18:49 ( 79,-17)
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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. 9 21 16.14 28 18.5 3.885 4.514 123 14.0 12.8 173.0 20:05 ( 0, 83)
Oct. 16 21 17.35 26 49.1 3.917 4.493 119 14.0 13.1 166.7 19:39 ( 0, 82)
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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. 9 15 21.00 -26 41.1 6.858 6.128 40 14.1 10.2 100.0 18:58 ( 58, -2)
Oct. 16 15 26.36 -26 53.9 6.921 6.126 34 14.1 10.6 100.3 18:49 ( 60, -4)
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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. 9 9 17.74 7 46.0 2.622 2.227 56 14.6 24.7 111.4 4:36 (286, 34)
Oct. 16 9 28.19 6 43.3 2.590 2.268 60 14.8 23.2 112.5 4:42 (291, 38)
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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. 9 10 45.15 -2 37.3 4.325 3.528 32 14.7 14.5 149.1 4:36 (281, 11)
Oct. 16 10 48.43 -4 4.3 4.319 3.592 38 14.7 14.0 152.0 4:42 (287, 16)
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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. 9 14 20.13 33 58.3 4.173 3.533 44 14.9 9.0 165.0 18:58 (118, 21)
Oct. 16 14 21.56 33 1.5 4.191 3.542 44 14.9 8.1 159.8 18:49 (119, 17)
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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. 9 18 12.09 -30 24.3 4.213 4.113 77 15.3 7.3 162.4 18:58 ( 26, 19)
Oct. 16 18 13.71 -31 12.3 4.290 4.075 70 15.3 7.7 151.0 18:49 ( 29, 17)
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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. 9 15 43.66 42 17.3 7.628 7.204 61 15.5 10.4 152.3 18:58 (119, 39)
Oct. 16 15 46.82 41 14.9 7.645 7.197 59 15.5 10.1 148.4 18:49 (119, 36)
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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. 9 4 55.96 35 10.8 3.644 4.205 117 16.0 11.5 294.0 3:48 (180, 90)
Oct. 16 4 49.13 35 42.8 3.467 4.129 125 15.9 14.1 288.5 3:14 (180, 89)
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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. 9 6 44.99 53 22.0 2.254 2.567 96 15.9 12.7 51.0 4:36 (205, 69)
Oct. 16 6 51.84 54 18.2 2.211 2.599 101 15.9 11.0 42.5 4:42 (194, 70)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 9 23 59.30 8 7.9 1.156 2.138 165 15.9 12.5 253.2 22:47 ( 0, 63)
Oct. 16 23 54.35 7 43.8 1.226 2.184 158 16.2 9.6 250.2 22:15 ( 0, 63)
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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. 9 7 46.88 28 5.9 2.270 2.346 81 16.2 21.4 101.2 4:36 (276, 63)
Oct. 16 7 57.54 27 36.1 2.195 2.350 86 16.1 19.8 102.5 4:42 (282, 68)
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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 18.5-19 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. 9 17 23.50 -11 37.2 1.231 1.232 66 16.8 26.0 93.2 18:58 ( 48, 29)
Oct. 16 17 36.73 -11 46.1 1.199 1.154 62 16.1 29.6 92.1 18:49 ( 49, 28)
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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. 9 2 54.26 48 45.8 1.130 1.934 130 16.3 36.0 262.2 1:47 (180, 76)
Oct. 16 2 28.43 47 47.6 1.124 1.983 138 16.3 39.2 253.2 0:54 (180, 77)
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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. 9 19 5.11 33 45.1 2.104 2.409 95 16.4 20.6 107.8 18:58 ( 89, 77)
Oct. 16 19 16.54 33 1.1 2.164 2.438 93 16.5 22.2 106.1 18:49 ( 87, 75)
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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. 9 19 20.55 3 38.2 5.252 5.455 96 16.5 1.9 333.7 18:58 ( 22, 57)
Oct. 16 19 20.48 3 50.3 5.373 5.468 90 16.5 1.9 15.7 18:49 ( 30, 55)
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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. 9 2 32.06 47 3.1 0.991 1.832 134 16.9 5.9 13.1 1:24 (180, 78)
Oct. 16 2 32.23 47 32.4 0.927 1.799 138 16.7 2.7 342.4 0:57 (180, 77)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Oct. 9 7 18.12 44 17.4 1.735 2.007 90 16.7 23.5 75.5 4:36 (236, 70)
Oct. 16 7 32.29 44 57.4 1.690 2.026 94 16.7 21.2 74.4 4:42 (229, 73)
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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. 9 5 14.65 13 0.7 1.222 1.888 116 17.1 12.5 91.1 4:06 ( 0, 68)
Oct. 16 5 19.74 12 59.1 1.180 1.902 121 17.0 8.8 91.3 3:44 ( 0, 68)
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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. 9 7 25.69 24 1.7 3.810 3.867 85 17.3 9.1 89.6 4:36 (290, 66)
Oct. 16 7 29.98 24 2.8 3.697 3.858 91 17.2 7.7 87.9 4:42 (300, 71)
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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. 9 19 54.89 -14 50.7 1.732 2.179 102 17.4 13.3 88.0 18:58 ( 4, 40)
Oct. 16 20 1.97 -14 44.9 1.779 2.147 97 17.4 16.1 85.8 18:49 ( 8, 40)
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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. 9 0 37.77 -30 35.7 0.798 1.706 143 17.6 19.3 309.6 23:26 ( 0, 25)
Oct. 16 0 29.95 -28 51.6 0.784 1.677 140 17.5 22.3 321.1 22:50 ( 0, 26)
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