Weekly Information about Bright Comets (2003 Aug. 30: North)

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Updated on August 31, 2003
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere.

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* C/2002 O7 ( LINEAR )


Although now it is in temporary conjunction with Sun and not observable, it will soon appear at dawn again in mid September in the Southern Hemisphere. In the Northern Hemisphere, it is not observable until December when it appears in the evening sky at 11-12 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  10 52.63  -12 46.3   1.851   0.997    22   10.8     35.2 182.4  19:58 ( 93,-28)  
Sept. 6  10 51.87  -17  0.7   1.783   0.951    23   10.6     37.7 182.5   4:08 (270,-31)  

* C/2001 HT50 ( LINEAR-NEAT )


It will be observable in good condition at 11-12 mag in autumn.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   5 29.59   17 38.7   2.959   2.843    73   11.7     10.8 278.2   4:02 (282, 47)  
Sept. 6   5 23.55   17 48.9   2.822   2.857    81   11.6     14.2 275.7   4:08 (290, 55)  

* C/2001 Q4 ( NEAT )


It will reach to 1 mag in 2004 spring. In the Northern Hemisphere, it is not observable until that time. It is getting brighter as expected until late July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   4 27.35  -50 11.9   3.481   3.754    97   12.0     22.0 162.1   4:02 (342,  1)  
Sept. 6   4 31.94  -52 42.5   3.380   3.678    99   11.8     22.8 166.1   4:08 (347,  0)  

* C/2002 Y1 ( Juels-Holvorcem )


It locates in good condition in the Southern Hemisphere, although it will never be observable again in the Northern Hemisphere. It had been fading slowly, however, it suddenly began to fade out faster in July
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   5 54.04  -76  6.1   2.137   2.429    94   12.1     29.9 152.0   4:02 (348,-25)  
Sept. 6   6 23.64  -78 57.7   2.266   2.520    92   12.4     26.3 150.8   4:08 (351,-27)  

* 66P/du Toit


Good condition in the Southern Hemisphere. Now it is much brighter than expected, reported as 12.5 mag visually in July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  14 34.18  -37 13.1   1.122   1.275    73   12.9     54.5 113.9  19:58 ( 43, -1)  
Sept. 6  15  5.16  -39 34.9   1.127   1.280    73   13.0     57.0 109.3  19:47 ( 39,  0)  

* C/2002 T7 ( LINEAR )


It is expected to be 1 mag in the southern sky in 2004 spring. It is getting brighter as expected, 13.5 mag in early August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   5 38.57   31 15.5   3.903   3.699    70   13.1      4.7  41.8   4:02 (262, 51)  
Sept. 6   5 39.88   31 41.2   3.701   3.618    77   12.9      4.2  22.9   4:08 (265, 58)  

* 65P/Gunn


It keeps locating at the same altitude until November, while it is fading gradually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  18 26.67  -33 41.6   1.891   2.538   118   13.0      6.7  79.3  19:58 (  1, 21)  
Sept. 6  18 31.00  -33 31.5   1.978   2.549   113   13.2      9.0  79.7  19:47 (  4, 21)  

* 81P/Wild 2


It will appear at dawn again in 2004 January at 14 mag, then fade out gradually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  10 45.58    8 48.0   2.620   1.613     3   13.1     44.1 110.7  19:58 (113,-16)  
Sept. 6  11  5.08    6 56.5   2.610   1.603     1   13.0     44.5 111.3  19:47 (111,-16)  

* 29P/Schwassmann-Wachmann 1


It has been observed around 12.5 mag since June to August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  22 33.57   -3 45.4   4.737   5.743   174   13.1      7.1 254.7   0:04 (  0, 51)  
Sept. 6  22 30.36   -3 59.0   4.741   5.742   172   13.1      7.1 253.8  23:29 (  0, 51)  

* 53P/Van Biesbroeck


It was reported brighter than 14 mag visually in July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  16 18.99  -15  7.5   2.231   2.438    89   14.6     19.4 109.2  19:58 ( 38, 31)  
Sept. 6  16 28.26  -15 51.5   2.303   2.431    84   14.6     20.9 107.3  19:47 ( 39, 29)  

* C/2002 X1 ( LINEAR )


It will keep 14-15 mag until the end of 2003.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   5 26.94   12 30.2   2.614   2.541    74   14.8     16.1 230.7   4:02 (289, 45)  
Sept. 6   5 20.08   11 13.6   2.475   2.558    83   14.7     20.2 234.5   4:08 (300, 51)  

* 118P/Sheomaker-Levy 4


Appearing at dawn. It will be fading slowly and become fainter than 18 mag in 2004 April.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   8 32.19   14 51.2   2.855   2.041    29   14.9     33.8 101.6   4:02 (258,  9)  
Sept. 6   8 48.02   14  1.2   2.827   2.051    32   15.0     33.4 102.7   4:08 (261, 12)  

* 116P/Wild 4


It kept brightening even after the perihelion passage in January, and reached to 12 mag in May. However now it is fading rapidly.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  15 54.01  -23 43.6   2.521   2.636    85   14.9     18.3 100.3  19:58 ( 38, 20)  
Sept. 6  16  3.44  -24  6.2   2.633   2.661    80   15.2     19.2  99.7  19:47 ( 39, 19)  

* C/2003 K4 ( LINEAR )


It will be 7 mag in the southern sky from autumn to winter in 2004.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  19 48.44   30 25.1   4.613   5.247   124   15.5     15.4 242.3  21:14 (  0, 85)  
Sept. 6  19 41.36   29 31.2   4.593   5.181   120   15.5     15.0 237.1  20:40 (  0, 84)  

* 43P/Wolf-Harrington


It will reach to 13 mag in the evening sky from winter to spring in 2004.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  23 26.40   28 25.8   1.570   2.432   140   15.7     10.0 290.0   0:57 (  0, 83)  
Sept. 6  23 20.93   28 41.6   1.499   2.390   144   15.5     11.1 275.4   0:24 (  0, 84)  

* C/2003 H1 ( LINEAR )


It has not been getting brighter at all since the discovery in April, and is still around 15.5 mag. It will be 13 mag at best in 2004 spring.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  14 45.32    9 35.1   3.315   2.985    62   15.6     15.0 206.9  19:58 ( 78, 33)  
Sept. 6  14 42.59    8  2.8   3.381   2.936    55   15.6     13.9 200.3  19:47 ( 80, 28)  

* C/2002 R3 ( LONEOS )


It will be observable at around 16 mag in good condition.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  23 38.56   20 37.8   3.051   3.929   145   15.6     31.3 255.9   1:09 (  0, 76)  
Sept. 6  23 23.22   19 37.2   3.015   3.940   152   15.6     32.7 253.0   0:26 (  0, 75)  

* C/2001 K5 ( LINEAR )


Although it locates in good position until autumn, it will fade out slowly.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  18  8.11   54 49.9   5.528   5.718    95   15.6      4.7 187.2  19:58 (170, 70)  
Sept. 6  18  8.10   54 15.5   5.569   5.740    94   15.7      5.1 173.6  19:47 (163, 70)  

* 2002 CE10


It reaches to be brightest in best condition until mid September. But after that, it will fade out rapidly while getting lower.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  23 12.05   20 43.0   1.248   2.174   148   15.9     82.5 235.0   0:44 (  0, 76)  
Sept. 6  22 38.82   14 44.4   1.232   2.200   158   15.7     86.2 231.3  23:35 (  0, 69)  

* P/2003 O2 ( LINEAR )


New periodic comet. It keeps 16 mag until November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   3  9.66   29 27.5   0.912   1.504   102   16.1     41.3  46.8   4:02 (303, 80)  
Sept. 6   3 25.58   32 42.4   0.879   1.502   105   16.0     39.4  45.6   4:08 (300, 85)  

* C/2003 H3 ( NEAT )


It will be fading gradually until December when it becomes fainter than 18 mag and gets low in the evening.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  18 52.23   10 54.5   2.521   3.171   121   16.0      1.7 341.4  20:19 (  0, 66)  
Sept. 6  18 52.49   11  2.7   2.619   3.200   116   16.1      1.9  62.4  19:52 (  0, 66)  

* C/2003 G1 ( LINEAR )


It will be observable in good condition at 16 mag until autumn.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  16 49.98   12 32.8   5.030   5.171    92   16.1      2.3  97.4  19:58 ( 52, 58)  
Sept. 6  16 51.39   12 30.0   5.139   5.188    87   16.2      3.6  97.6  19:47 ( 57, 55)  

* 22P/Kopff


It was reported 17 mag in mid August. Now it seems a bit fainter than this ephemeris.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   3  4.17   11 21.6   2.287   2.788   109   16.4      2.6 120.0   4:02 (341, 65)  
Sept. 6   3  4.64   11  9.9   2.239   2.829   115   16.5      2.0 189.2   4:06 (  0, 66)  

* C/2003 L2 ( LINEAR )


It will be observable around 17 mag from autumn to winter in the northern sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  16 39.36   65  7.1   3.169   3.196    82   16.8      9.2 235.0  19:58 (159, 56)  
Sept. 6  16 32.33   64 28.9   3.158   3.166    81   16.7      7.7 223.8  19:47 (156, 54)  

* C/2002 J5 ( LINEAR )


It keeps 17 mag until 2004 summer.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  16 40.81   37 10.6   5.706   5.729    86   16.9      8.5 226.5  19:58 (104, 68)  
Sept. 6  16 37.62   36 29.5   5.778   5.727    82   16.9      7.6 219.2  19:47 (103, 64)  

* 2P/Encke


In the Northern Hemisphere, the condition is good. It locates high in the evening sky at 10 mag in mid November. It reaches to 8 mag in the evening low sky in early December. In the Southern Hemisphere, it is only observable until mid November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   2 25.83   26 14.8   1.426   2.045   113   17.3     12.8  24.7   3:55 (  0, 81)  
Sept. 6   2 27.95   27 39.7   1.276   1.969   118   17.0     12.9  11.7   3:30 (  0, 83)  

* C/2003 F1 ( LINEAR )


It keeps 17 mag until September when it becomes low in the evening sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30  15 47.64   24 35.4   4.157   4.037    76   17.2     19.6 162.5  19:58 ( 85, 53)  
Sept. 6  15 50.96   22 26.6   4.237   4.044    72   17.2     19.4 158.5  19:47 ( 84, 50)  

* 28P/Neujmin 1


Appearing at dawn. The ephemeris says it keeps around 17.5 mag until December. However, no observations have been reported since 2002 July, and the current brightness is uncertain.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   5 58.57   36 29.4   3.333   3.084    67   17.6     13.9  75.3   4:02 (252, 49)  
Sept. 6   6  5.93   36 53.8   3.296   3.139    72   17.6     12.4  73.5   4:08 (254, 54)  

* P/2003 O3 ( LINEAR )


New periodic comet. It becomes 18 mag at best, and will fade out soon.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 30   2 40.19   21 39.4   0.475   1.265   111   17.9     41.6  42.5   4:02 (352, 76)  
Sept. 6   2 53.06   25  3.4   0.475   1.280   114   18.0     35.6  39.0   3:55 (  0, 80)  

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