|
Image:
1999 June 12
|
After rapid brightening, it suddenly stopped being brighter. Now it is not observable. It will appear at dawn as 6 mag in late July. After that, it will fade while being higher.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 7 49.31 31 19.0 1.696 0.718 10 6.7 28.7 325.7 20:56 (140, -9)
July 24 7 40.20 33 59.5 1.681 0.754 15 6.8 27.8 323.4 3:22 (224, -3)
|
|
New comet. Northern people can see it after late of this month. The comet will be faint soon. It will keep over 20 deg high in the evening sky in August in the Northern Hemisphere, although it set down under the horizon in the Southern Hemisphere. After that, it is alwasy 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.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 10 21.64 -8 45.2 0.602 0.771 49 7.8 200.3 50.4 20:56 ( 85, -6)
July 24 11 19.55 4 9.7 0.733 0.762 48 8.1 132.5 46.2 20:49 ( 90, 8)
|
Image:
1999 June 14
|
It will fade out rapidly after this. It is now in the evening sky. But in the Northern Hemisphere, it reaches only 16 deg high around July 20, then it will be lower. So people can observe it only until mid August. After conjunction, it appears again at dawn as 16 mag in December. On the other hand, it keeps high until late August in the Southern Hemisphere.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 4.92 -36 40.3 0.720 1.500 118 9.8 113.5 303.8 20:56 ( 20, 16)
July 24 14 26.66 -30 29.0 0.928 1.523 103 10.5 64.5 311.1 20:49 ( 34, 16)
|
Image:
1999 June 12
|
11 mag visually, well condensed and easy to see. It is stellar by CCD.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 17 0.08 -13 4.6 0.656 1.577 140 10.4 18.9 181.9 21:20 ( 0, 42)
July 24 17 0.96 -15 20.6 0.664 1.555 134 10.2 20.3 167.6 20:54 ( 0, 39)
|
Image:
1999 June 14
|
It suddenly became 2 mag brighter in June. Now it reaches to 11 mag. The condition keeps good until September.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 0 36.94 3 42.3 1.067 1.643 104 11.8 18.6 47.3 3:15 (316, 50)
July 24 0 42.43 5 5.8 1.045 1.678 108 11.9 14.9 41.0 3:22 (326, 55)
|
|
Only southern people can observe it. Northern people can never see it again.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 6 22.53 -64 6.2 8.890 8.893 86 12.2 6.9 120.3 3:15 (328,-41)
July 24 6 28.79 -64 32.3 8.944 8.946 86 12.3 6.9 125.1 3:22 (328,-38)
|
Image:
1998 Dec. 13
|
Not observable. It will appear again in September as 13 mag.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 6 18.14 17 59.1 2.722 1.804 20 12.4 38.3 94.6 3:15 (243, -6)
July 24 6 36.58 17 33.4 2.728 1.832 22 12.6 37.4 96.3 3:22 (246, -3)
|
Image:
1998 Dec. 5
|
Only southern people can observe it. It will appear again in 2000 August as 13 mag.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 8 43.28 -47 51.2 3.863 3.651 70 13.0 14.7 123.2 20:56 ( 54,-43)
July 24 8 52.16 -48 51.7 3.859 3.630 69 12.9 15.9 125.7 20:49 ( 53,-45)
|
Image:
1999 May 20
|
Not observable. After conjunction, it will appear again at dawn in mid October as 14.5 mag.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 9 44.01 16 38.4 3.610 2.763 28 13.2 20.6 142.2 20:56 (111, -1)
July 24 9 50.09 14 47.1 3.723 2.826 24 13.4 20.0 141.3 20:49 (112, -5)
|
Image:
1999 June 12
|
Small outburst happened and it looked stellar as 14.5 mag on June 5.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 14 43.38 -26 13.2 5.696 6.151 112 13.7 1.7 24.4 20:56 ( 27, 23)
July 24 14 44.01 -26 3.6 5.797 6.149 105 13.7 2.1 55.6 20:49 ( 32, 21)
|
Image:
1999 June 14
|
Although it will be low in October and November, Northern people can observe it as 14 mag until 2000 April. Then they can trace it until July as the comet gets low at dusk as 16.5 mag. It is 13 mag visually.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 10.00 53 29.7 3.453 3.513 84 14.4 24.8 232.8 20:56 (147, 66)
July 24 14 56.09 51 39.9 3.520 3.508 81 14.5 23.1 225.8 20:49 (137, 63)
|
Image:
1998 Dec. 13
|
Although it is highest now, the altitude is only 18 deg.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 23 25.84 -36 57.6 4.768 5.474 129 14.5 13.3 198.3 3:15 (353, 18)
July 24 23 23.02 -38 25.9 4.758 5.523 134 14.5 13.6 203.0 3:18 ( 0, 17)
|
Image:
1999 May 12
|
Not observable. After appearing again at dawn in December, it will be lower than 20 deg in the Northern Hemisphere.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 10 8.72 -0 28.0 3.113 2.448 41 14.9 29.1 114.9 20:56 ( 93, -6)
July 24 10 20.98 -1 54.1 3.191 2.479 38 15.0 28.9 115.3 20:49 ( 93, -8)
|
|
Not yet observed in this return. Now is the chance for the first observation. We can observe it as 14 mag from summer though winter under good condition.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 2 45.21 8 38.6 1.912 1.878 72 15.0 34.1 76.6 3:15 (282, 31)
July 24 3 0.78 9 30.9 1.846 1.868 75 14.9 33.5 77.8 3:22 (284, 35)
|
Image:
1999 Feb. 6
|
Mother asteroid of Geminids. Although it appears at dawn, it will fade out rapidly.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 4 7.86 37 7.2 1.314 1.003 48 15.2 14.4 37.5 3:15 (243, 28)
July 24 4 12.88 38 24.7 1.344 1.115 54 15.5 13.5 36.7 3:22 (244, 34)
|
Image:
1999 June 12
|
It will close to the earth down to 0.4 AU in October and reach to 11 mag. In the Northern Hemisphere, people can observe it until mid November. But because the comet is moving southwards, it will just over the horizon after the approach to the earth. It will not be obesrvable after 2000 February. On the other hand, southern people cannot see it until the approach.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 9 30.04 67 2.0 2.040 1.568 48 15.5 18.3 203.1 20:56 (155, 26)
July 24 9 22.50 65 6.7 2.003 1.500 46 15.3 17.2 200.7 20:49 (155, 22)
|
Image:
1999 June 14
|
Because it is far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 21 39.38 38 10.0 4.549 5.058 114 15.3 2.9 291.3 2:03 (180, 87)
July 24 21 37.56 38 13.1 4.480 5.043 118 15.3 3.4 267.2 1:33 (180, 87)
|
|
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.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 4 1.38 40 26.6 2.723 2.219 50 15.4 29.4 64.4 3:15 (240, 31)
July 24 4 17.61 41 52.1 2.693 2.244 53 15.4 28.4 65.2 3:22 (240, 34)
|
Image:
1999 June 14
|
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.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 18 59.35 -17 34.1 3.611 4.613 168 15.4 18.5 234.1 23:18 ( 0, 37)
July 24 18 52.05 -18 50.0 3.597 4.570 161 15.4 18.3 233.5 22:44 ( 0, 36)
|
Image:
1999 June 14
|
Because it is extremely far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition. Visual observers reported it as 14 mag.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 43.31 57 28.2 7.303 7.316 86 15.5 11.5 206.7 20:56 (163, 66)
July 24 15 39.32 56 14.4 7.326 7.306 84 15.5 11.6 201.3 20:49 (154, 65)
|
Image:
1999 June 14
|
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. It is 14.5 mag visually.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 18 30.05 34 43.2 1.550 2.252 121 15.5 16.0 325.5 22:49 ( 0, 90)
July 24 18 25.29 36 2.6 1.581 2.251 118 15.5 12.1 321.9 22:17 (180, 89)
|
|
Not yet observed in this return. Now is the chance for the first observation. We can observe it as 15 mag from summer though winter under good condition.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 3 43.21 30 12.4 2.331 1.923 54 15.6 36.2 64.7 3:15 (252, 30)
July 24 4 1.10 31 57.4 2.277 1.919 56 15.5 35.9 65.9 3:22 (252, 34)
|
Image:
1999 June 14
|
About 3 mag brighter than expected based on the pre-perihelion observations.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 18 32.20 -17 1.6 2.217 3.202 162 15.6 7.8 261.9 22:52 ( 0, 38)
July 24 18 28.76 -17 9.8 2.281 3.233 155 15.8 6.4 258.9 22:21 ( 0, 38)
|
|
First return. Bright and now is the chance to recover. It will be brightening slowly and reach to 15 mag in September.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 1 31.94 8 45.4 2.293 2.500 89 15.8 18.2 82.6 3:15 (296, 45)
July 24 1 40.15 8 58.4 2.215 2.504 94 15.7 16.7 85.4 3:22 (303, 50)
|
|
Not yet observed in this return. Now is the chance for the first observation. It will keep around 25 deg high until October when it becomes 12.5 mag.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 0 36.30 -27 18.2 1.547 2.169 113 16.0 16.2 101.3 3:15 (335, 23)
July 24 0 44.25 -27 43.6 1.450 2.125 117 15.7 14.9 106.0 3:22 (341, 25)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 45.65 -15 39.7 8.944 9.544 123 16.1 1.2 276.2 20:56 ( 15, 38)
July 24 15 45.23 -15 39.4 9.053 9.555 116 16.1 0.5 265.4 20:49 ( 22, 37)
|
Image:
1999 June 14
|
We can observe it until October when it fades to 17 mag and becomes low in the evening sky.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 0.18 13 8.9 5.057 5.368 102 16.1 1.3 100.4 20:56 ( 50, 59)
July 24 15 1.04 13 5.5 5.178 5.393 96 16.2 2.5 107.4 20:49 ( 57, 56)
|
Image:
1999 Feb. 6
|
Appearing at dawn. It is probably much fainter than the ephemris.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 4 14.07 20 43.7 3.509 2.939 48 16.5 17.6 77.9 3:15 (258, 19)
July 24 4 22.42 21 7.9 3.471 2.979 53 16.6 16.5 78.6 3:22 (261, 25)
|
|
Northern people can observe it only until late July.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 16 5.45 -7 28.2 1.136 1.915 125 16.6 41.6 185.3 20:56 ( 11, 47)
July 24 16 4.63 -12 12.9 1.178 1.906 120 16.7 39.8 179.5 20:49 ( 17, 41)
|
Image:
1999 May 31
|
It will be over 45 deg high and 17 mag until mid November.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 20 8.80 -0 30.5 4.266 5.224 158 16.8 15.5 293.8 0:32 ( 0, 54)
July 24 20 2.12 0 11.6 4.252 5.216 159 16.8 15.5 291.8 23:53 ( 0, 55)
|
|
Appearing at dawn. It will be 16 mag and locale high in next autumn and winter.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 4 55.35 29 31.7 3.094 2.387 38 17.0 29.5 83.2 3:15 (245, 16)
July 24 5 11.06 29 52.8 3.035 2.377 41 16.9 29.3 84.8 3:22 (247, 20)
|
Image:
1999 Jan. 16
|
Appearing to be in the morning sky. The brightness after late February is unknown. One reported that it is too faint to catch by CCD now.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 15 49.88 -32 4.5 2.062 2.797 127 17.2 20.8 341.3 20:56 ( 11, 22)
July 24 15 47.22 -29 57.7 2.238 2.884 120 17.5 16.9 349.0 20:49 ( 16, 23)
|
|
New comet. We can observe it as 17.5 mag until October. After conjunction, we can observe it again as 17 mag in spring and autumn in 2000.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 19 8.04 1 2.8 5.022 5.965 156 17.3 18.0 266.1 23:27 ( 0, 56)
July 24 18 59.71 0 52.3 5.026 5.947 152 17.2 17.7 264.4 22:51 ( 0, 56)
|
Image:
1999 June 4
|
Fading as expected. Observation is hard because it is in the Milky Way.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 16 55.58 4 39.0 2.301 3.069 131 17.4 30.6 237.2 21:15 ( 0, 60)
July 24 16 44.73 2 45.8 2.455 3.143 124 17.6 26.0 232.9 20:49 ( 6, 57)
|
|
It keeps 17.5 mag and 40 deg high until October. A stellar object.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 20 13.47 -12 54.0 1.615 2.620 168 17.6 11.1 266.8 0:37 ( 0, 42)
July 24 20 7.92 -13 0.2 1.570 2.581 172 17.5 12.0 264.5 0:04 ( 0, 42)
|
|
Although it keeps 18 mag until the end of 2000, it is higher than 40 deg only until late July.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 16 9.08 -10 25.2 3.014 3.721 127 17.6 4.6 206.6 20:56 ( 9, 44)
July 24 16 8.54 -10 55.0 3.096 3.723 121 17.7 4.4 183.2 20:49 ( 16, 43)
|
|
No observations reported since it appeared at dawn, except for Ageo Survey team's one on Mar. 12 (16.4 mag).
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 1 19.00 64 42.9 4.494 4.314 73 17.6 10.0 29.9 3:15 (205, 53)
July 24 1 23.86 65 41.5 4.486 4.364 76 17.7 9.0 24.8 3:22 (200, 55)
|
|
New retrograde asteroid. It will be overhead as 17 mag between 2000 January and March.
|
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
July 17 14 38.66 5 38.3 2.320 2.700 100 17.9 27.1 273.2 20:56 ( 50, 50)
July 24 14 27.16 5 44.5 2.436 2.666 91 18.0 22.1 270.8 20:49 ( 59, 45)
|