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Image:
1999 Mar. 31
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We can see it in good condition until June. Southern observers cannot see it until May. It became smaller and fainter, about 12 mag, in March by CCD, but visual observers reported it 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)
Apr. 10 8 12.31 64 37.2 1.736 1.994 89 10.2 54.0 173.2 19:55 (168, 60)
Apr. 17 8 19.10 58 37.9 1.836 2.038 86 10.4 49.5 171.2 20:02 (156, 63)
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Image:
1999 Feb. 6
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It is appearing at dawn in the Southern Hemisphere. But still not observable in the Northern Hemisphere, it will appear again in early May as 10 mag. It was 16 mag by CCD after all until February...
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 23 33.21 -2 13.3 2.649 1.812 26 11.7 4.3 121.7 4:08 (270, -4)
Apr. 17 23 34.76 -2 31.3 2.507 1.758 33 11.4 4.2 135.1 3:57 (272, -1)
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Image:
1998 Dec. 13
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Not observable. It will appear again in September as 13 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 1 36.56 9 0.1 2.671 1.678 6 11.6 42.9 73.0 19:55 (111,-13)
Apr. 17 1 56.11 10 25.8 2.667 1.668 4 11.5 43.2 73.9 20:02 (114,-15)
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Only southern people can observe it. Norhtern 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)
Apr. 10 4 57.77 -65 15.4 8.178 8.131 83 11.7 6.0 38.0 19:55 ( 24,-21)
Apr. 17 5 2.19 -64 43.8 8.230 8.186 84 11.7 6.0 45.2 20:02 ( 26,-24)
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Observed for the first time in this return on Mar. 21 as 13.3 mag visually, as bright as expected. t will be at the peak in June and reach to 13 mag, but the altitude keeps only about 15 deg for the Northern people until June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 20 52.15 -24 30.2 1.447 1.469 71 13.3 48.5 73.2 4:08 (312, 12)
Apr. 17 21 15.56 -22 45.0 1.405 1.458 72 13.2 48.1 70.9 3:57 (310, 12)
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Image:
1998 Dec. 5
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It locates high in the Southern Hemisphere. For the Northern observsers, this early April is the last chance. Then it has gone to the south.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 7 58.24 -47 36.3 3.685 4.036 103 13.4 7.7 308.1 19:55 ( 12, 6)
Apr. 17 7 54.73 -47 2.7 3.702 4.004 100 13.4 6.3 319.2 20:02 ( 18, 4)
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Image:
1999 Mar. 22
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It has bursted out on Mar. 16 and raeched to 12.6 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 15 16.19 -29 19.9 5.339 6.176 143 13.6 4.7 272.4 2:06 ( 0, 26)
Apr. 17 15 13.47 -29 17.0 5.278 6.174 150 13.5 5.5 276.6 1:36 ( 0, 26)
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Image:
1999 Jan. 16
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Only southern people can observe it. It will appear at dawn as 16 mag in mid June for Norhtern observers. It brightened about 1 mag after perihelion passage.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 21 57.95 -54 8.9 1.406 1.486 74 13.7 22.1 243.7 4:08 (325,-17)
Apr. 17 21 40.10 -55 21.4 1.371 1.585 82 13.9 26.8 245.8 3:57 (329,-14)
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Image:
1998 Dec. 13
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Not observable. It will appear again in late May as 14 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 22 58.50 -22 42.4 5.463 4.804 44 14.2 10.7 111.6 4:08 (292, -9)
Apr. 17 23 3.40 -23 11.9 5.426 4.851 50 14.2 10.4 115.7 3:57 (294, -7)
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Image:
1999 Mar. 31
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It has faded out rapidly. Maybe 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)
Apr. 10 7 16.97 17 21.9 1.930 2.154 88 14.4 24.3 114.1 19:55 ( 61, 60)
Apr. 17 7 28.07 16 12.4 2.013 2.164 84 14.5 25.4 112.9 20:02 ( 66, 55)
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Not yet observed in this return. Although it is not observable now, we can observe it for a while as 15-16 mag after appearing again at dawn as 15 mag in June. But it should be muyh 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)
Apr. 10 0 26.79 11 54.8 2.958 1.990 12 14.8 36.2 55.2 4:08 (251, -7)
Apr. 17 0 41.03 14 18.8 2.951 1.996 14 14.9 36.1 55.4 3:57 (249, -5)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 5 22.34 -5 3.4 2.272 2.034 63 14.9 33.9 76.1 19:55 ( 65, 24)
Apr. 17 5 37.53 -4 10.3 2.386 2.096 61 15.3 32.8 77.6 20:02 ( 69, 21)
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Image:
1999 Feb. 6
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Not observable. Although it appears again in July, it will be fainter than 18 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 1 41.26 8 56.9 3.333 2.343 7 15.0 29.0 67.4 19:55 (110,-12)
Apr. 17 1 53.82 10 12.7 3.388 2.387 3 15.1 28.3 68.1 20:02 (115,-15)
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Image:
1999 Mar. 22
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It is very diffused and hard to observe.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 20 46.48 15 35.7 2.213 2.014 65 15.5 14.2 286.1 4:08 (279, 40)
Apr. 17 20 39.00 16 3.1 2.152 2.089 72 15.6 17.7 282.6 3:57 (283, 45)
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Image:
1999 Mar. 31
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It has faded out rapidly. Maybe 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)
Apr. 10 8 14.01 21 4.2 1.411 1.884 101 15.6 27.1 117.5 19:55 ( 43, 72)
Apr. 17 8 26.18 19 36.9 1.496 1.908 97 15.9 27.8 116.5 20:02 ( 52, 67)
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Image:
1999 Mar. 31
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It has faded out rapidly. Maybe 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)
Apr. 10 7 15.26 41 32.6 2.633 2.740 85 15.7 4.6 245.3 19:55 (115, 67)
Apr. 17 7 13.61 41 19.4 2.839 2.818 78 16.0 2.2 214.7 20:02 (114, 60)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 16 8.42 -17 8.5 8.646 9.395 136 16.0 2.5 293.7 2:58 ( 0, 38)
Apr. 17 16 7.16 -17 1.1 8.581 9.405 143 16.0 3.1 290.8 2:29 ( 0, 38)
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Image:
1999 Mar. 22
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It keeps 17 mag until July. It was 14 mag visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 7 30.38 23 34.3 1.719 2.003 90 16.1 24.3 104.6 19:55 ( 68, 66)
Apr. 17 7 42.80 22 48.8 1.774 1.992 87 16.1 26.3 105.0 20:02 ( 73, 61)
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Appearing at dawn. Last observation is on Sept. 16. It keeps 16 mag until August, locating in good position. We failed to observe it on Mar. 22, it should be fainter than 16.8 mag.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 21 33.18 1 20.6 3.969 3.493 55 16.4 19.0 56.6 4:08 (285, 22)
Apr. 17 21 40.34 2 33.9 3.923 3.523 59 16.4 18.1 54.7 3:57 (285, 25)
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Image:
1999 Mar. 22
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In March, it was 14.5 mag visually, 1 mag brighter than the ephemeris. But 16.5 mag by CCD, 1 mag 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)
Apr. 10 6 30.58 33 37.6 1.837 1.884 76 16.4 32.1 81.8 19:55 ( 99, 58)
Apr. 17 6 48.55 34 2.5 1.925 1.910 73 16.6 32.2 85.1 20:02 (101, 55)
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First return. Bright and now is the chance to recover. It is already observable in the Southern Hemisphere. Even in the Northern Hemisphere, the comet will be higher after this. It will be brightening slowly and reach to 15 mag in September.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 22 56.82 -2 16.3 3.317 2.566 35 16.7 28.0 71.7 4:08 (275, 3)
Apr. 17 23 9.20 -1 14.7 3.257 2.554 38 16.7 27.8 71.6 3:57 (275, 5)
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Image:
1999 Mar. 12
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Appearing at dawn. It was 16.4 mag on Mar. 12, 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)
Apr. 10 22 59.30 46 51.2 4.235 3.648 48 16.8 22.1 55.1 4:08 (230, 28)
Apr. 17 23 11.62 48 19.0 4.274 3.693 48 16.8 21.4 54.3 3:57 (229, 29)
Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 6 11.79 45 20.1 5.307 5.120 73 17.2 1.7 294.0 19:55 (121, 55)
Apr. 17 6 11.20 45 25.2 5.436 5.135 67 17.3 0.8 341.7 20:02 (121, 49)
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Image:
1999 Mar. 22
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It was observed much brighter, about 14 mag, in March visually.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 7 23.56 28 14.1 2.225 2.419 88 17.5 21.2 113.0 19:55 ( 80, 67)
Apr. 17 7 33.98 27 16.2 2.351 2.463 84 17.7 21.6 112.3 20:02 ( 83, 62)
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No observations reported since last May. It appears at dawn.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 18 49.27 -18 44.9 2.502 2.821 97 17.5 11.6 75.6 4:08 (335, 32)
Apr. 17 18 54.26 -18 24.8 2.435 2.844 103 17.5 9.5 72.6 3:57 (338, 33)
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Image:
1999 Mar. 22
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It will be brightening very slowly until late May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 17 16.31 -6 39.2 1.382 2.069 119 17.7 13.5 72.7 4:05 ( 0, 48)
Apr. 17 17 21.86 -6 10.2 1.281 2.028 124 17.5 11.5 68.5 3:43 ( 0, 49)
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Image:
1999 Mar. 22
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This April is the last chance. It will be fainter than 19 mag and lower than 30 deg.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 11 26.43 -16 12.6 0.799 1.751 152 17.6 17.9 209.6 22:12 ( 0, 39)
Apr. 17 11 23.15 -17 51.9 0.853 1.777 146 17.9 13.7 199.4 21:42 ( 0, 37)
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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)
Apr. 10 9 12.76 6 4.3 12.979 13.487 118 17.7 1.1 295.8 19:59 ( 0, 61)
Apr. 17 9 12.42 6 7.1 13.080 13.484 111 17.7 0.6 306.5 20:02 ( 16, 60)
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Not yet been observed in this return, although the perihelion passage in on Apr. 6. Now is the chance to observe it for the first time, but it is in the Milky Way.. It will be 17.5 mag in May and June.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 17 51.25 -13 44.2 1.439 2.033 111 17.9 17.4 65.5 4:08 (350, 41)
Apr. 17 17 58.16 -12 51.9 1.377 2.034 116 17.8 15.1 59.4 3:57 (353, 42)
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Image:
1999 Mar. 22
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It will be fainter than 19 mag and lower than 30 deg in late May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 7 39.50 15 56.7 1.418 1.796 94 17.9 29.5 102.4 19:55 ( 51, 63)
Apr. 17 7 53.73 15 10.0 1.487 1.808 90 18.0 30.7 103.0 20:02 ( 58, 59)
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Image:
1999 Mar. 22
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It was 18.1 mag on Feb. 22, 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)
Apr. 10 16 34.36 26 13.4 5.510 6.080 120 18.0 15.1 326.9 3:24 ( 0, 81)
Apr. 17 16 29.74 27 40.1 5.479 6.096 123 18.0 15.3 322.3 2:52 ( 0, 83)
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Image:
1999 Jan. 30
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A Centaur asteroid. The perihelion passage is in 1991. It will keep 18 mag until around 2000.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 14 18.75 14 17.8 13.123 14.020 152 18.3 3.3 296.5 1:08 ( 0, 69)
Apr. 17 14 17.30 14 27.4 13.133 14.038 153 18.3 3.3 292.2 0:39 ( 0, 69)
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It will locate higher than 50 deg as 18.5 mag until May.
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Date(TT) R.A. (2000) Decl. Delta r Elong. m1 Mot.(') p.a. Best Time(A, h)
Apr. 10 11 15.54 -0 28.5 2.118 3.027 149 18.5 8.4 309.1 22:01 ( 0, 55)
Apr. 17 11 12.94 0 6.2 2.154 3.012 142 18.5 6.5 315.2 21:31 ( 0, 55)
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