Weekly Information about Bright Comets (2001 Sept. 8: South)

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 Updated on September 10, 2001
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.

Please see also the Comet Rendezvous Calendar, Latest Pictures of Comets.

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* 19P/Borrelly
It keeps 10 mag until mid November in the morning sky. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   7  3.81   17 18.1   1.542   1.360    60   10.2     49.9  72.7   4:46 (229, 21)  
Sept.15   7 27.30   18 59.0   1.508   1.358    61   10.2     49.9  73.5   4:36 (229, 19)

* P/2001 Q2 ( Petriew )
New periodic comet. It keeps 10 mag in September. But it begins to fade out after October, and becomes fainter than 13 mag in December. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   7 15.97   19 48.0   0.966   0.951    57   10.2     66.5 113.7   4:46 (229, 17)  
Sept.15   7 44.56   16 39.1   1.010   0.966    57   10.4     61.8 115.7   4:36 (234, 18)

* C/2001 A2 ( LINEAR )
Fading as expected, however, it is too diffused to see visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  20  1.74   17 44.2   1.189   1.982   128   10.8      8.2 184.7  20:51 (180, 37)  
Sept.15  20  2.28   16 48.7   1.332   2.076   124   11.3      8.2 160.2  20:24 (180, 38)

* C/1999 Y1 ( LINEAR )
It locates high in the Southern Hemisphere. But it is too low to observe in the Northern Hemisphere. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  23 24.99  -47 57.9   2.682   3.492   137   12.6     33.7 233.3   0:18 (  0, 77)  
Sept.15  23  5.78  -50  2.4   2.763   3.524   132   12.7     30.8 239.6  23:25 (  0, 75)

* C/2000 SV74 ( LINEAR )
It will be observable at 12.5 mag until 2002 September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   2  2.40   50 35.6   3.644   4.130   112   13.0     18.1 327.5   2:55 (180,  4)  
Sept.15   1 54.25   52 19.9   3.544   4.099   116   12.9     18.8 320.6   2:19 (180,  3)

* C/2000 WM1 ( LINEAR )
Although the brightening is slower than expected, it began to be observed visually. It reaches to 6.5 mag in winter. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   4 41.60   50 24.7   2.278   2.482    89   13.3      9.6  74.7   4:46 (188,  4)  
Sept.15   4 47.87   50 41.4   2.088   2.387    94   13.0      8.1  73.8   4:36 (186,  4)

* 29P/Schwassmann-Wachmann 1
It was observed at 11.5 mag visually in late August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  18 37.54  -27 33.7   5.442   5.907   112   13.5      1.4   9.1  19:27 (180, 83)  
Sept.15  18 37.96  -27 23.7   5.545   5.905   106   13.5      2.0  43.7  19:14 (157, 82)

* C/2000 CT54 ( LINEAR )
It is not observable in the Northern Hemisphere until when it locates low in the evening sky at 15 mag in December. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  23  6.06  -71 38.4   2.706   3.250   114   13.8     15.5 316.1  23:53 (  0, 53)  
Sept.15  22 51.62  -70 10.8   2.746   3.267   112   13.8     16.7 325.3  23:12 (  0, 55)

* P/2001 MD7 ( LINEAR )
It reaches to 13.5 mag in November. It locates in the evening sky until 2002 April. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  18 20.16  -23 57.8   0.974   1.616   109   14.5     15.4 142.8  19:10 (180, 79)  
Sept.15  18 26.21  -25 21.2   0.985   1.566   103   14.4     18.4 129.1  19:14 (148, 79)

* 144P/2000 O2 ( Kushida )
Not observable until December when it becomes fainter than 17.5 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  10 26.55    7  0.1   2.627   1.644     9   14.5     42.1 112.0   4:46 (269,-11)  
Sept.15  10 44.55    5  9.8   2.653   1.682    11   14.8     40.9 112.6   4:36 (270,-10)

* C/1999 U4 ( Catalina-Skiff )
It was 16.1 mag on Aug. 22 by KenIchi Kadota. It is observable until 2002 autumn at 15 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   8 11.72   65 58.0   5.230   4.931    67   15.0     15.3  75.2   4:46 (203,-22)  
Sept.15   8 28.67   66 24.6   5.165   4.927    70   15.0     15.0  75.1   4:36 (203,-23)

* C/1995 O1 ( Hale-Bopp )
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)  
Sept. 8   6 35.14  -76 59.4  14.148  14.197    90   15.3      4.4 161.5   4:46 (348, 44)  
Sept.15   6 37.68  -77 29.3  14.213  14.239    89   15.3      4.4 167.2   4:36 (350, 45)

* C/1997 BA6 ( Spacewatch )
After the small outburst up to 15 mag in July, it keeps the brightness still in late August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  21  1.86   -1 40.9   5.674   6.556   148   15.4      8.0 271.9  21:51 (180, 57)  
Sept.15  20 58.34   -1 39.4   5.782   6.602   141   15.5      7.0 271.6  21:20 (180, 57)

* 16P/Brooks 2
It will fade out after this and become fainter than 18 mag in January. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   4 40.17   17 31.6   1.521   1.888    94   15.9     23.2  92.2   4:46 (194, 36)  
Sept.15   4 50.89   17 22.0   1.471   1.903    98   15.9     20.7  94.9   4:36 (192, 37)

* 47P/Ashbrook-Jackson
It keeps 16 mag until late October, then fades out. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   5 22.34   34  9.2   2.770   2.837    83   15.9     14.0  66.7   4:46 (199, 18)  
Sept.15   5 29.14   34 47.7   2.703   2.862    88   16.0     12.4  63.7   4:36 (197, 18)

* 61P/Shajn-Schaldach
It must be bright enough, but no observations reported since 200 Sept. 20. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   5 40.62   17 24.4   2.445   2.479    80   16.3     18.7  94.9   4:46 (210, 32)  
Sept.15   5 49.33   17 11.7   2.377   2.495    84   16.3     17.1  96.8   4:36 (208, 33)

* C/2001 K3 ( Skiff )
It will fade out after this and be fainter than 18 mag in December. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  19 41.97   16  8.2   2.663   3.343   124   16.4      5.6 291.6  20:31 (180, 39)  
Sept.15  19 39.99   16 20.0   2.758   3.371   119   16.5      3.2 294.7  20:02 (180, 39)

* C/2000 K2 ( LINEAR )
It did not begin to fade out even after the perihelion passage. It had been at the conjunction for a while, and still keeps the brightness. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   2  8.44    8 24.6   3.459   4.205   132   16.5      6.8 207.8   3:01 (180, 47)  
Sept.15   2  6.61    7 41.1   3.441   4.259   139   16.5      7.9 215.3   2:31 (180, 47)

* C/2001 Q6 ( NEAT )
New comet. Brightening rapidly. It will be at opposition and reach to 15.5 mag in October. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   3 42.46   17  9.7   1.056   1.671   108   16.8     50.4   8.8   4:34 (180, 38)  
Sept.15   3 45.52   23 34.4   0.948   1.627   112   16.5     60.6   4.1   4:10 (180, 32)

* 51P/Harrington
Fading. It will be fainter than 18 mag in November. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   5 18.07   13 35.6   1.604   1.831    85   16.5     22.6  90.4   4:46 (206, 37)  
Sept.15   5 28.23   13 32.4   1.571   1.866    90   16.7     19.8  92.0   4:36 (204, 38)

* 2001 OG108
New asteroid with 50-year period. It closes to the earth down to 0.55 AU in 2001 April and reaches to 14 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   1 18.56   17 34.2   1.973   2.819   139   16.7     24.2 295.7   2:11 (180, 37)  
Sept.15   1  6.55   18 47.1   1.838   2.743   147   16.5     29.0 290.9   1:32 (180, 36)

* C/1999 T1 ( McNaught-Hartley )
Fading gradually. It locates in the northern sky and the northern people can observe it until it disappears. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  16 57.95   59 48.8   3.723   3.754    83   16.6     16.4 147.8  19:09 (170, -6)  
Sept.15  17  6.31   58 12.5   3.797   3.826    84   16.7     16.7 144.3  19:14 (166, -6)

* C/2001 N2 ( LINEAR )
It will be 14.5 mag in 2002 July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8  21 24.78   38 20.0   3.645   4.362   130   16.7     24.6 246.0  22:13 (180, 17)  
Sept.15  21 11.78   37  2.0   3.613   4.311   128   16.6     24.7 240.6  21:32 (180, 18)

* 44P/Reinmuth 2
Fading. It will be fainter than 18 mag in January. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   5 22.60   29 21.9   2.380   2.479    83   16.8     14.9  82.8   4:46 (201, 22)  
Sept.15   5 29.96   29 33.9   2.323   2.512    88   16.8     12.8  82.9   4:36 (198, 23)

* 73P/Schwassmann-Wachmann 3
Although KenIchi Kadota, observed it at 16.8 mag on July 16, it was very faint, 18.0 mag, on Aug. 28 by Akimasa Nakamura. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   3 44.28   11 38.4   2.205   2.702   108   17.0      1.8 237.4   4:36 (180, 43)  
Sept.15   3 42.86   11 29.6   2.164   2.755   115   17.1      4.7 251.2   4:07 (180, 43)

* P/2001 Q5 ( LINEAR-NEAT )
New periodic comet. It will keep 17 mag until late October, but then fades out. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   2  9.42   24 42.8   1.402   2.155   126   17.1      9.0 359.7   3:01 (180, 30)  
Sept.15   2  8.57   25 41.3   1.364   2.172   132   17.0      8.3 337.1   2:33 (180, 29)

* C/1999 K8 ( LINEAR )
Fading slowly. It will be fainter than 18 mag at the end of this year. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   4 30.17  -17 32.3   5.587   5.852   100   17.2      9.3 161.3   4:46 (207, 71)  
Sept.15   4 31.34  -18 34.3   5.545   5.889   105   17.3      9.1 168.7   4:36 (196, 73)

* 2000 EJ37
Asteroid with 10-year period. Fading gradually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 8   3 56.60   13 13.6   2.480   2.915   105   17.9      4.3 146.2   4:46 (181, 42)  
Sept.15   3 57.14   12 46.8   2.439   2.968   112   17.9      4.1 182.3   4:21 (180, 42)

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