Weekly Information about Bright Comets (2003 May 10: North)

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 Updated on May 10, 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 Y1 ( Juels-Holvorcem )
Appearing at dawn in the Southern Hemisphere. In the Northern Hemisphere, it will never be observable again. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   1 13.67    6 47.1   1.620   0.891    29    7.1     49.2 146.9   3:25 (259, -4)  
May  17   1 26.48    1 56.4   1.602   0.976    35    7.4     50.4 146.4   3:16 (263, -6)

* C/2002 V1 ( NEAT )
Very low even in the Southern Hemisphere. Few observations have been reported recently. It was reported as bright as 9.9 mag still in early May, however, it seems to be very diffused. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   3 51.26  -16 24.1   2.690   1.960    35    9.9     23.5  77.9  20:28 ( 91,-31)  
May  17   4  2.02  -15 54.3   2.811   2.076    35   10.1     21.6  80.5  20:36 ( 96,-36)

* C/2001 RX14 ( LINEAR )
It will be low in the evening sky and fainter than 13 mag in June. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  11  3.52   14 29.1   1.873   2.442   112   12.0     21.0 162.9  20:28 ( 24, 68)  
May  17  11  6.95   12 12.2   1.990   2.486   107   12.3     20.7 157.0  20:36 ( 38, 62)

* C/2001 HT50 ( LINEAR-NEAT )
It will be observable in good condition at 11-12 mag in autumn again. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   5 33.46   12 41.8   3.615   2.859    35   12.2      4.7 356.2  20:28 (101,  6)  
May  17   5 33.55   13 13.2   3.682   2.845    29   12.2      4.3   8.3  20:36 (107, -1)

* 65P/Gunn
It is observable at 12.5 mag for long time until August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  19  1.51  -26 42.7   1.722   2.446   125   12.6      7.1 137.5   3:25 (353, 28)  
May  17  19  3.34  -27 21.5   1.657   2.446   131   12.6      6.2 159.9   3:16 (357, 28)

* C/2002 O7 ( LINEAR )
Getting brighter slowly. It will be 10 mag in autumn. In the Northern Hemisphere, it will observable only until July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  13  1.61   41 29.3   1.726   2.332   114   13.4     43.9 251.2  21:48 (180, 84)  
May  17  12 36.88   39 27.5   1.711   2.245   108   13.3     43.8 242.8  20:56 (180, 86)

* 116P/Wild 4
It was observed visually at around 12 mag these days. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  15 25.54  -22  8.3   1.295   2.301   173   13.5     11.2 274.5   0:17 (  0, 33)  
May  17  15 19.95  -22  0.6   1.308   2.317   175   13.5     11.0 276.6  23:40 (  0, 33)

* 29P/Schwassmann-Wachmann 1
Appearing at dawn, but not yet observed in this season. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  22 40.42   -5 28.8   6.037   5.759    69   13.6      7.7  60.2   3:25 (292, 19)  
May  17  22 43.36   -5  3.0   5.931   5.758    75   13.6      6.9  58.8   3:16 (294, 23)

* C/2001 Q4 ( NEAT )
It will reach to 1 mag in 2004 spring. In the Northern Hemisphere, it is not observable until that time. No observations have been reported since Jan. 24. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   2 44.80  -32  7.2   5.499   4.909    49   14.1     11.0  92.3   3:25 (284,-43)  
May  17   2 50.96  -32 13.2   5.390   4.840    52   14.0     11.4  96.5   3:16 (285,-40)

* C/2001 K5 ( LINEAR )
It is observable in good condition at 14-15 mag until autumn. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  19  7.21   47 50.4   5.231   5.420    95   14.2     13.0 354.1   3:25 (204, 76)  
May  17  19  5.87   49 18.4   5.220   5.436    96   14.3     12.4 348.7   3:16 (188, 76)

* 81P/Wild 2
It will set down under horizon soon. 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)  
May  10   5 57.01   22 16.2   2.732   2.069    40   14.5     29.5  87.6  20:28 (106, 16)  
May  17   6 12.15   22 21.8   2.742   2.031    37   14.4     30.6  89.2  20:36 (109, 12)

* 22P/Kopff
Appearing at dawn in the Southern Hemisphere. In the Northern Hemisphere, it will appear at dawn in June at 15.5 mag, then it will be fading. No observations have been reported since 2002 September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   0 54.48    2 39.5   2.866   2.125    35   14.5     29.5  69.5   3:25 (265, -3)  
May  17   1  7.18    3 49.5   2.859   2.166    38   14.6     28.4  70.0   3:16 (265, -1)

* C/2002 J4 ( NEAT )
It will be observable at 14.5 mag for a long time from spring to autumn in the Southern Hemisphere. In the Northern Hemisphere, it locates very low in the morning until spring. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  18 45.13  -42 52.2   3.167   3.864   127   14.9     13.6 180.7   3:25 (358, 12)  
May  17  18 44.44  -44 28.5   3.081   3.843   133   14.8     14.0 188.0   3:08 (  0, 11)

* 53P/Van Biesbroeck
It will be 14 mag from spring to summer. It was reported brighter than 14 mag visually these days. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  16  7.36  -10 19.7   1.727   2.711   163   15.0      8.2 292.6   0:59 (  0, 45)  
May  17  16  3.51   -9 59.1   1.688   2.686   168   14.9      9.0 287.5   0:28 (  0, 45)

* 154P/2002 Q4 ( Brewington )
No observations have been reported since Mar. 29. It will set under the horizon soon, and then fade out. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   4 12.97   33 18.0   2.712   1.815    21   15.1     40.8  79.9  20:28 (129,  4)  
May  17   4 35.31   34  0.4   2.767   1.852    20   15.6     39.8  82.4  20:36 (131,  2)

* C/2002 T7 ( LINEAR )
It is expected to be 1 mag in the southern sky in 2004 spring. It will appear at dawn again in July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   4 38.99   27 28.6   5.825   4.917    23   15.2      6.5  80.0  20:28 (121,  4)  
May  17   4 42.51   27 36.9   5.797   4.845    17   15.2      7.0  79.7  20:36 (125, -1)

* 118P/Sheomaker-Levy 4
It will appear at dawn in September at 15 mag, then fade out gradually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10   4  0.24   14 43.2   3.049   2.080    13   15.5     34.2  77.5  20:28 (117,-11)  
May  17   4 16.50   15 32.2   3.051   2.067    10   15.3     34.5  78.9  20:36 (120,-14)

* C/2002 X1 ( LINEAR )
It will appear at dawn again in late July, then 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)  
May  10   5 33.76   22 12.3   3.343   2.582    35   15.4      4.0 189.0  20:28 (109, 11)  
May  17   5 33.71   21 45.4   3.408   2.563    28   15.4      3.8 174.0  20:36 (114,  4)

* C/2003 H1 ( LINEAR )
New comet. It will be as bright as 11.5 mag in 2004 spring. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  17 55.02   22  9.3   3.199   3.839   122   15.7     23.5 289.5   2:47 (  0, 77)  
May  17  17 43.00   23  0.2   3.084   3.783   127   15.5     26.2 284.7   2:07 (  0, 78)

* C/2003 G1 ( LINEAR )
New comet. 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)  
May  10  17 34.06    2 39.3   4.172   4.971   138   15.6     13.6 329.1   2:25 (  0, 58)  
May  17  17 30.56    3 59.6   4.134   4.979   143   15.6     13.8 324.7   1:54 (  0, 59)

* C/2000 SV74 ( LINEAR )
Although it has been bright and observable for a long time, it will be fainter than 17 mag and getting lower in the evening sky in August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  13 28.63   41  7.1   4.312   4.858   117   15.8     15.2 231.1  22:16 (180, 84)  
May  17  13 21.80   39 56.7   4.408   4.898   113   15.8     14.8 224.7  21:42 (180, 85)

* C/2003 H3 ( NEAT )
New comet. It keeps 16 mag until August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  19 46.46  -11 57.3   2.368   2.905   112   16.0     17.6   8.2   3:25 (336, 40)  
May  17  19 47.09   -9 53.3   2.292   2.910   118   15.9     17.9   0.3   3:16 (342, 43)

* 30P/Reinmuth 1
It became brighter than expected after the perihelion passage, and reached to 13 mag in March. Then it faded rapidly and already reached to 16 mag now. It will be fainter than 18 mag in July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  11 24.97   15 32.6   1.575   2.216   116   16.1     12.8 127.2  20:28 ( 10, 70)  
May  17  11 30.32   14 35.7   1.672   2.247   111   16.3     14.7 125.5  20:36 ( 29, 67)

* C/1999 U4 ( Catalina-Skiff )
It keeps 16 mag until June. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  12 40.99   35 30.2   5.968   6.488   116   16.2      8.0 220.0  21:29 (180, 90)  
May  17  12 38.33   34 45.4   6.075   6.521   111   16.3      7.9 212.2  20:59 (  0, 90)

* C/2002 J5 ( LINEAR )
As it is a very far object, it keeps 17 mag until 2004 summer. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  18 46.83   33 50.0   5.436   5.805   106   16.8     15.8 316.7   3:25 (293, 87)  
May  17  18 40.29   35  8.1   5.374   5.797   109   16.8     16.3 311.5   3:04 (180, 90)

* 66P/du Toit
It will not be observable around the perihelion passage. Before the perihelion passage, it is observable until July when it reaches to 15 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  12  0.64   -1 14.6   1.072   1.900   131   17.3     17.0 239.1  20:48 (  0, 54)  
May  17  11 54.75   -2 21.2   1.071   1.839   124   17.1     14.8 225.7  20:36 (  9, 52)

* C/2003 F1 ( LINEAR )
New comet. It will keep 17.5 mag until summer. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  16 49.89   52 59.0   3.628   4.026   106   17.3     11.5 255.7   1:41 (180, 72)  
May  17  16 41.04   52 31.9   3.611   4.021   106   17.3     12.7 247.4   1:05 (180, 72)

* 95P/(2060) Chiron
It will be observable around 17.5 mag until autumn. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  19 14.20  -15 17.4  11.555  12.100   120   17.4      1.3 289.0   3:25 (347, 39)  
May  17  19 13.49  -15 14.8  11.472  12.114   127   17.4      1.7 280.5   3:16 (354, 40)

* C/2003 H2 ( LINEAR )
New comet. It will reach to 17.5 mag in June at best. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  10  18  7.95   19 15.1   1.486   2.197   122   17.8     29.3 231.6   2:59 (  0, 74)  
May  17  17 55.40   16 50.1   1.403   2.193   129   17.6     36.6 230.4   2:20 (  0, 72)

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