Weekly Information about Bright Comets (2001 Sept. 22: North)

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 Updated on September 24, 2001
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere.

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

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* 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.22   8  9.92   13 36.3   1.051   0.991    57   10.1     56.8 117.2   4:23 (278, 36)  
Sept.29   8 32.93   10 37.4   1.094   1.025    58   10.3     52.3 118.5   4:28 (283, 36)

* 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.22   7 51.05   20 35.0   1.477   1.361    63   10.1     49.7  74.3   4:23 (274, 43)  
Sept.29   8 14.99   22  5.7   1.449   1.368    64   10.1     49.3  75.1   4:28 (274, 46)

* 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.22  20  4.32   15 57.2   1.480   2.169   120   11.7      8.9 141.5  19:59 (  0, 71)  
Sept.29  20  7.59   15 11.0   1.633   2.261   116   12.1     10.0 128.3  19:34 (  0, 70)

* C/2000 WM1 ( LINEAR )
It is 1 mag brighter than this ephemeris 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.22   4 52.99   50 56.0   1.897   2.289    99   12.7      6.3  72.4   4:23 (195, 73)  
Sept.29   4 56.60   51  7.4   1.706   2.191   105   12.3      3.9  70.0   4:26 (180, 74)

* 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.22   1 44.06   53 57.7   3.455   4.068   121   12.8     19.5 313.4   1:42 (180, 71)  
Sept.29   1 31.77   55 25.7   3.379   4.038   125   12.7     20.0 306.1   1:02 (180, 70)

* C/1999 Y1 ( LINEAR )
It locates high in the Southern Hemisphere. 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.22  22 46.58  -51 35.1   2.864   3.556   126   12.8     27.5 246.0  22:39 (  0,  3)  
Sept.29  22 28.29  -52 38.2   2.981   3.589   120   13.0     23.9 252.6  21:53 (  0,  2)

* 29P/Schwassmann-Wachmann 1
It was observed at 11.5 mag visually in late August, but now it is not in outburst. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.22  18 38.99  -27 13.4   5.652   5.903    99   13.5      2.9  59.4  19:21 ( 12, 27)  
Sept.29  18 40.61  -27  2.7   5.760   5.901    93   13.6      3.9  67.0  19:11 ( 16, 26)

* 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.22  22 40.15  -68 27.0   2.793   3.285   110   13.9     17.7 333.6  22:33 (  0,-13)  
Sept.29  22 31.69  -66 30.0   2.848   3.304   108   14.0     18.5 341.0  21:57 (  0,-11)

* 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.22  18 34.90  -26 39.5   0.997   1.518    98   14.3     22.0 119.4  19:21 ( 13, 27)  
Sept.29  18 46.19  -27 51.1   1.007   1.473    94   14.2     25.7 112.2  19:11 ( 14, 26)

* 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.22   8 45.53   66 50.9   5.099   4.924    74   15.0     14.6  74.9   4:23 (208, 42)  
Sept.29   9  2.20   67 17.1   5.034   4.921    77   14.9     14.2  74.4   4:28 (208, 43)

* 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.22  11  1.91    3 20.3   2.679   1.722    13   15.0     39.6 113.1   4:23 (262, -5)  
Sept.29  11 18.65    1 32.5   2.703   1.764    16   15.3     38.4 113.4   4:28 (266, -3)

* P/2001 Q6 ( NEAT )
New periodic comet. Brightening rapidly. It will be at opposition and reach to 14.5 mag in October. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.22   3 46.30   31 35.7   0.802   1.544   117   15.4     74.5 359.4   3:43 (  0, 86)  
Sept.29   3 44.01   41  2.9   0.731   1.509   120   15.1     87.5 355.3   3:13 (180, 84)

* 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.22   6 39.34  -77 59.9  14.279  14.282    88   15.3      4.4 173.2   4:23 (353,-25)  
Sept.29   6 40.00  -78 30.8  14.346  14.325    86   15.3      4.4 179.4   4:28 (355,-24)

* C/1997 BA6 ( Spacewatch )
After the small outburst up to 15 mag in July, it keeps the brightness still in mid September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.22  20 55.31   -1 38.1   5.903   6.647   134   15.6      6.0 271.7  20:49 (  0, 53)  
Sept.29  20 52.79   -1 36.8   6.034   6.693   127   15.7      4.8 272.5  20:19 (  0, 53)

* 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.22   5  0.29   17  6.8   1.423   1.920   103   15.9     18.0  98.1   4:23 (335, 71)  
Sept.29   5  8.22   16 46.6   1.376   1.939   108   15.9     15.0 102.2   4:28 (353, 72)

* 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.22   5 34.93   35 26.0   2.636   2.888    94   16.0     10.7  59.1   4:23 (263, 76)  
Sept.29   5 39.60   36  4.2   2.569   2.913    99   16.0      8.9  52.2   4:28 (260, 82)

* 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.22   0 51.80   19 57.3   1.720   2.667   155   16.3     33.9 286.7   0:50 (  0, 75)  
Sept.29   0 34.33   21  1.5   1.621   2.589   161   16.1     38.4 282.9   0:05 (  0, 76)

* 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.22   5 57.15   16 56.3   2.308   2.513    89   16.3     15.2  98.9   4:23 (306, 63)  
Sept.29   6  3.98   16 38.8   2.240   2.530    94   16.3     13.2 101.4   4:28 (318, 67)

* C/1999 K5 ( LINEAR )
Appearing at dawn. It had been hardly fading for almost one year after the perihelion passage in 2000 July, and was bright at 15 mag in 2001 May. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.22   7 32.64  -19 22.3   5.484   5.184    67   16.4      3.9 118.1   4:23 (313, 20)  
Sept.29   7 34.08  -19 35.9   5.448   5.229    72   16.5      3.1 130.8   4:28 (320, 24)

* 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.22  20 59.72   35 30.6   3.599   4.260   125   16.6     24.4 235.5  20:53 (180, 90)  
Sept.29  20 48.87   33 49.2   3.601   4.210   121   16.5     23.6 230.5  20:15 (  0, 89)

* 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.22  19 39.13   16 27.6   2.860   3.400   114   16.6      1.1 323.4  19:33 (  0, 71)  
Sept.29  19 39.35   16 32.5   2.966   3.429   109   16.7      1.6  68.9  19:11 (  4, 72)

* 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.22   2  4.19    6 55.0   3.434   4.313   147   16.6      8.8 220.4   2:01 (  0, 62)  
Sept.29   2  1.27    6  7.2   3.440   4.367   154   16.7      9.6 224.1   1:31 (  0, 61)

* 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.22  17 15.18   56 38.5   3.873   3.899    84   16.8     17.0 140.9  19:21 (144, 59)  
Sept.29  17 24.44   55  7.7   3.951   3.970    83   17.0     17.2 137.6  19:11 (141, 59)

* 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.22   5 36.15   29 44.0   2.266   2.545    94   16.9     10.5  82.6   4:23 (285, 74)  
Sept.29   5 41.07   29 52.8   2.208   2.578    99   16.9      8.0  81.6   4:28 (297, 80)

* 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.22   5 36.98   13 26.2   1.537   1.902    94   16.9     16.7  93.6   4:23 (319, 63)  
Sept.29   5 44.20   13 18.1   1.502   1.940    99   17.1     13.4  95.3   4:28 (332, 66)

* 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.22   2  6.07   26 29.9   1.331   2.188   138   17.0      8.8 314.4   2:03 (  0, 81)  
Sept.29   2  2.07   27  7.2   1.308   2.208   145   17.0     10.0 296.6   1:32 (  0, 82)

* 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.22   3 40.05   11 17.3   2.128   2.807   123   17.2      7.6 254.8   3:37 (  0, 66)  
Sept.29   3 35.90   11  1.8   2.099   2.858   131   17.3     10.4 256.6   3:05 (  0, 66)

* 151P/2001 M1 ( Helin )
Rapidly brightened and reached to 17 mag. Now it is at the peak and it will fade out after this. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.22  23 59.32   -4 56.5   1.529   2.531   175   17.4      8.4 232.9  23:52 (  0, 50)  
Sept.29  23 56.23   -5 30.2   1.539   2.531   169   17.5      7.8 234.8  23:22 (  0, 49)

* 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.22   3 56.45   12 16.4   2.402   3.021   119   17.9      5.3 210.6   3:53 (  0, 67)  
Sept.29   3 54.56   11 42.8   2.371   3.073   126   17.9      7.2 226.1   3:24 (  0, 67)

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