Weekly Information about Bright Comets (2002 July 13: South)

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Updated on July 12, 2002
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.

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* C/2002 C1 ( Ikeya-Zhang )


The fading pace is very slow and the comet is still 9 mag. However, now it is very diffused.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  15 24.00   -3 22.5   1.537   2.205   118    9.4     18.8 165.2  19:59 (180, 59)  
July 20  15 26.75   -5 21.5   1.709   2.304   112    9.8     17.3 156.7  19:34 (180, 60)  

* C/2000 SV74 ( LINEAR )


It is as faint as 14 or 15 mag by CCD.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  10 56.07   77 52.9   3.987   3.605    61   13.0     25.5 142.8  18:34 (170,-26)  
July 20  11 25.43   75 26.0   4.002   3.618    60   13.0     25.4 146.7  18:38 (168,-24)  

* 29P/Schwassmann-Wachmann 1


It kept as bright as 12 mag from early June to early July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  21  0.80  -17 48.4   4.867   5.822   157   13.2      6.1 260.9   1:39 (180, 73)  
July 20  20 57.71  -17 55.6   4.831   5.820   165   13.2      6.6 260.8   1:08 (180, 73)  

* C/2002 F1 ( Utsunomiya )


Although it did not fade at all in May and kept 8 mag until late May, only two observations by one person in mid June were reported after June. So the current brightness is quite uncertain. It became very diffused and faded out rapidly in mid June, fainter than 10.5 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   7 28.04  -20  8.6   2.343   1.728    42   13.2     35.0 134.8   5:36 (291,  6)  
July 20   7 40.17  -22 58.5   2.431   1.839    43   13.7     33.6 135.7   5:34 (291, 10)  

* 67P/Churyumov-Gerasimenko


It was observed at 15.0 mag on June 18, as bright as expected. It will reach to 13.5 mag between July and October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   4 12.59   19 27.9   1.863   1.363    45   13.7     53.9  75.3   5:36 (228, 19)  
July 20   4 38.81   20 56.3   1.827   1.339    46   13.6     54.5  77.5   5:34 (227, 18)  

* C/2001 K5 ( LINEAR )


Strongly condensed.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  16 21.83   18 36.7   4.656   5.225   119   13.6      6.1 295.8  20:56 (180, 36)  
July 20  16 19.42   18 52.1   4.727   5.219   113   13.6      4.6 292.7  20:27 (180, 36)  

* C/2001 N2 ( LINEAR )


Now it is at the peak.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  16 50.65   13 48.4   1.955   2.696   127   13.7     50.8 244.1  21:24 (180, 41)  
July 20  16 30.18   11  9.0   2.029   2.687   120   13.8     46.0 240.0  20:36 (180, 44)  

* 22P/Kopff


The condition in this return is bad. We can observe it only until August before perihelion passage when it becomes to 13 mag in the evening sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  12 13.78    3 25.6   2.239   2.144    71   14.0     21.6 116.9  18:34 (142, 44)  
July 20  12 23.19    2 14.8   2.274   2.104    67   13.9     23.4 116.5  18:38 (135, 43)  

* 28P/Neujmin 1


Stellar object. It will reach to 13 mag at the end of this year. In the northern hemisphere, it keeps low in the south after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  14 50.73  -36 49.5   1.798   2.457   118   14.2      5.3   3.6  19:26 (  0, 88)  
July 20  14 51.82  -36 14.6   1.817   2.402   112   14.2      5.8  36.2  19:00 (  0, 89)  

* 116P/Wild 4


After conjunction, it will appear at dawn at 13 mag in October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   8 36.10   21  8.5   3.505   2.542    15   14.4     27.1 105.4  18:34 (113, -5)  
July 20   8 49.19   20 15.9   3.502   2.519    12   14.3     27.5 106.4  18:38 (109, -8)  

* C/2001 RX14 ( LINEAR )


It will be observable at 10 mag in the good condition for a long time from winter to next spring.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   4 45.85   41 42.5   3.722   3.005    39   14.6     24.9  70.2   5:36 (219, -3)  
July 20   5  0.84   42 40.3   3.615   2.950    42   14.5     25.4  71.1   5:34 (217, -2)  

* 57P/du Toit-Neujmin-Delporte


It reaches to 15 mag at best in July and August. However, it bursted out and became 6 mag brighter than this ephemeris in the previous return in 1996.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  20  4.56  -13 41.1   0.730   1.738   168   14.8      3.4 257.3   0:43 (180, 69)  
July 20  20  2.73  -13 50.2   0.720   1.733   172   14.8      4.4 246.2   0:13 (180, 69)  

* 7P/Pons-Winnecke


Although it seems to start fading by CCD, it still keeps as bright as around 12 mag visually even after the perihelion passage.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   0 18.87  -32 35.6   0.668   1.439   115   14.8     31.6 138.6   4:56 (180, 88)  
July 20   0 28.85  -35 18.4   0.687   1.479   119   15.1     27.0 147.4   4:39 (  0, 90)  

* 46P/Wirtanen


It was 15.7 mag on July 7, about 3.5 mag fainter than expected. Although it had been expected to be 10 mag in August in the morning low sky, it may be 13.5 mag at best in fact.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   4 25.96   15 13.0   1.728   1.215    43   15.5     61.6  75.6   5:36 (234, 20)  
July 20   4 55.47   16 53.4   1.692   1.173    42   15.0     63.2  77.6   5:34 (233, 18)  

* C/2000 WM1 ( LINEAR )


It became so faint now. It seems to be fainter than 18 mag in September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  16 12.84   33 50.9   2.470   2.939   107   15.1     11.8 225.5  20:47 (180, 21)  
July 20  16  8.95   32 50.5   2.621   3.028   103   15.5     10.5 212.0  20:16 (180, 22)  

* C/2002 E2 ( Snyder-Murakami )


Fading rapidly.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  13 11.52   77 51.5   2.593   2.400    67   15.2     11.7 204.3  18:34 (177,-23)  
July 20  13  4.44   76 39.4   2.685   2.469    66   15.5     10.1 191.5  18:38 (175,-22)  

* 65P/Gunn


It will be too low in the evening sky in August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  11 39.00   11  3.7   3.376   3.012    60   15.2     17.8 122.1  18:34 (138, 33)  
July 20  11 46.40    9 56.1   3.435   2.991    56   15.2     18.8 121.3  18:38 (131, 31)  

* C/2001 HT50 ( LINEAR-NEAT )


Observable only in the Southern Hemisphere. After conjunction, it will appear at dawn at 13.5 mag in October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   9 40.91   -0 10.2   5.240   4.497    39   15.3      2.7  81.8  18:34 (105, 21)  
July 20   9 42.28   -0  9.2   5.263   4.448    33   15.2      3.2  91.6  18:38 (100, 15)  

* C/1999 U4 ( Catalina-Skiff )


It is observable until autumn at 15 mag. It was reported as 14 mag visually, but as 16 mag by CCD, so there is a large difference.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  11  3.94   52 43.2   5.883   5.304    51   15.9     15.1 140.6  18:34 (155, -5)  
July 20  11 11.33   51 22.1   5.942   5.324    48   15.9     15.1 139.0  18:38 (151, -7)  

* 54P/de Vico-Swift


It has been lost since last appearance in 1965. If it becomes bright, it will be 15.5 mag in good condition in autumn. However, it seems to be fainter than 19 mag actually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   1 14.13    6 52.7   1.888   2.155    90   16.4     22.6  61.8   5:36 (186, 48)  
July 20   1 23.16    8  5.8   1.811   2.151    94   16.3     21.1  61.0   5:33 (180, 47)  

* C/2002 H2 ( LINEAR )


Fading rapidly. It keeps observable until it fades out in the Northern Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  12 47.83   61 29.6   2.393   2.188    66   16.4     17.7 211.1  18:34 (171, -7)  
July 20  12 40.86   59 48.2   2.523   2.246    62   16.8     14.9 202.4  18:38 (166, -7)  

* 92P/Sanguin


It will be 15.5 mag in September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  21 38.72   14  1.4   1.123   1.954   131   16.6      7.2  61.6   2:16 (180, 41)  
July 20  21 41.34   14 16.0   1.060   1.928   136   16.4      4.6  81.5   1:52 (180, 41)  

* C/2002 K4 ( NEAT )


It keeps 17 mag until September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  20 32.71   18 36.3   1.937   2.765   136   16.6     42.1 302.3   1:12 (180, 37)  
July 20  20 14.60   21  3.2   1.926   2.766   137   16.5     41.9 297.7   0:26 (180, 34)  

* C/2000 CT54 ( LINEAR )


Appearing at dawn. It will be brighter than 17 mag until September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13   1 35.72   -3 10.8   4.686   4.786    89   16.7      4.0  30.0   5:36 (197, 57)  
July 20   1 36.35   -2 47.9   4.623   4.831    95   16.7      3.1  12.6   5:34 (186, 58)  

* 95P/(2060) Chiron


It keeps 17 mag locating at the same altitude until October in the Northerm Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  18 21.61  -16 21.2  10.543  11.521   163   17.1      3.6 266.2  22:56 (180, 71)  
July 20  18 19.90  -16 23.1  10.594  11.534   156   17.1      3.4 265.0  22:27 (180, 71)  

* C/2002 J5 ( LINEAR )


It is a far object. It will be 17 mag all through in 2003 and 2004.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  19 33.35   14  7.6   5.654   6.503   143   17.4     14.1 282.2   0:12 (180, 41)  
July 20  19 26.66   14 25.7   5.630   6.480   144   17.4     14.1 279.0  23:33 (180, 41)  

* C/1997 BA6 ( Spacewatch )


It keeps brightness around 17.5 mag still now.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 13  21 32.86   15 45.4   7.854   8.562   131   17.5      6.6 289.8   2:11 (180, 39)  
July 20  21 29.74   15 59.2   7.839   8.607   136   17.5      6.8 284.5   1:40 (180, 39)  

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