Weekly Information about Bright Comets (2001 Sept. 29: North)

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Updated on October 2, 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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* 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.29   8 14.99   22  5.7   1.449   1.368    64   10.1     49.3  75.1   4:28 (274, 46)  
Oct.  6   8 38.99   23 31.0   1.424   1.381    66   10.2     48.6  75.8   4:34 (273, 48)  

* P/2001 Q2 ( Petriew )


It will fade out after this 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.29   8 32.93   10 37.4   1.094   1.025    58   10.3     52.3 118.5   4:28 (283, 36)  
Oct.  6   8 53.65    7 46.6   1.135   1.068    59   10.6     48.1 119.6   4:34 (288, 37)  

* C/2000 WM1 ( LINEAR )


It was 11-12 mag visually in late September. It brightens rapidly after this, will be 10 mag in late October and 6.5 mag in late November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept.29   4 56.60   51  7.4   1.706   2.191   105   12.3      3.9  70.0   4:26 (180, 74)  
Oct.  6   4 58.22   51 13.8   1.516   2.090   110   11.9      0.7  53.2   4:00 (180, 74)  

* 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.29  20  7.59   15 11.0   1.633   2.261   116   12.1     10.0 128.3  19:34 (  0, 70)  
Oct.  6  20 11.82   14 30.7   1.791   2.352   111   12.5     11.0 118.9  19:11 (  0, 69)  

* 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.29   1 31.77   55 25.7   3.379   4.038   125   12.7     20.0 306.1   1:02 (180, 70)  
Oct.  6   1 17.52   56 40.7   3.315   4.009   128   12.6     20.3 298.6   0:20 (180, 68)  

* 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.29  22 28.29  -52 38.2   2.981   3.589   120   13.0     23.9 252.6  21:53 (  0,  2)  
Oct.  6  22 11.64  -53 15.6   3.111   3.623   113   13.2     20.4 259.1  21:09 (  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.29  18 40.61  -27  2.7   5.760   5.901    93   13.6      3.9  67.0  19:11 ( 16, 26)  
Oct.  6  18 42.78  -26 51.7   5.870   5.899    86   13.6      4.9  71.2  19:01 ( 19, 25)  

* 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.29  22 31.69  -66 30.0   2.848   3.304   108   14.0     18.5 341.0  21:57 (  0,-11)  
Oct.  6  22 25.97  -64 22.7   2.910   3.324   105   14.0     19.2 347.5  21:24 (  0, -9)  

* 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.29  18 46.19  -27 51.1   1.007   1.473    94   14.2     25.7 112.2  19:11 ( 14, 26)  
Oct.  6  19  0.01  -28 54.1   1.017   1.431    90   14.1     29.4 106.5  19:01 ( 15, 24)  

* 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.29   3 44.01   41  2.9   0.731   1.509   120   15.1     87.5 355.3   3:13 (180, 84)  
Oct.  6   3 36.09   51 47.2   0.685   1.479   121   14.9     97.1 350.6   2:38 (180, 74)  

* 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.29   9  2.20   67 17.1   5.034   4.921    77   14.9     14.2  74.4   4:28 (208, 43)  
Oct.  6   9 18.62   67 43.6   4.969   4.919    81   14.9     13.8  73.6   4:34 (206, 45)  

* 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.29  11 18.65    1 32.5   2.703   1.764    16   15.3     38.4 113.4   4:28 (266, -3)  
Oct.  6  11 34.81   -0 12.9   2.725   1.807    18   15.6     37.1 113.6   4:34 (270,  0)  

* 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.29   6 40.00  -78 30.8  14.346  14.325    86   15.3      4.4 179.4   4:28 (355,-24)  
Oct.  6   6 39.52  -79  1.6  14.413  14.367    85   15.4      4.4 185.8   4:34 (357,-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.29  20 52.79   -1 36.8   6.034   6.693   127   15.7      4.8 272.5  20:19 (  0, 53)  
Oct.  6  20 50.81   -1 35.0   6.175   6.739   120   15.8      3.7 274.6  19:50 (  0, 53)  

* 16P/Brooks 2


Fading now. 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.29   5  8.22   16 46.6   1.376   1.939   108   15.9     15.0 102.2   4:28 (353, 72)  
Oct.  6   5 14.55   16 22.5   1.332   1.960   113   16.0     11.9 108.1   4:16 (  0, 71)  

* 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.29   5 39.60   36  4.2   2.569   2.913    99   16.0      8.9  52.2   4:28 (260, 82)  
Oct.  6   5 43.05   36 42.6   2.504   2.939   105   16.1      7.3  41.3   4:34 (230, 87)  

* 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.29   6  3.98   16 38.8   2.240   2.530    94   16.3     13.2 101.4   4:28 (318, 67)  
Oct.  6   6  9.73   16 19.9   2.172   2.549   100   16.3     11.0 104.6   4:34 (334, 70)  

* 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.29   7 34.08  -19 35.9   5.448   5.229    72   16.5      3.1 130.8   4:28 (320, 24)  
Oct.  6   7 34.93  -19 50.1   5.409   5.275    77   16.5      2.3 152.0   4:34 (327, 28)  

* 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.29  20 48.87   33 49.2   3.601   4.210   121   16.5     23.6 230.5  20:15 (  0, 89)  
Oct.  6  20 39.35   32  1.2   3.618   4.160   116   16.5     22.5 225.6  19:38 (  0, 87)  

* 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.29   0 34.33   21  1.5   1.621   2.589   161   16.6     38.4 282.9   0:05 (  0, 76)  
Oct.  6   0 14.49   21 55.3   1.544   2.512   161   16.5     41.9 279.4  23:11 (  0, 77)  

* 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.29   2  1.27    6  7.2   3.440   4.367   154   16.7      9.6 224.1   1:31 (  0, 61)  
Oct.  6   1 57.98    5 19.0   3.459   4.422   162   16.8     10.0 226.8   1:00 (  0, 60)  

* 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.29  19 39.35   16 32.5   2.966   3.429   109   16.7      1.6  68.9  19:11 (  4, 72)  
Oct.  6  19 40.59   16 36.2   3.075   3.460   104   16.8      3.6  81.9  19:01 ( 16, 71)  

* 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.29   5 41.07   29 52.8   2.208   2.578    99   16.9      8.0  81.6   4:28 (297, 80)  
Oct.  6   5 44.63   30  0.3   2.152   2.611   106   16.9      5.4  79.3   4:34 (333, 84)  

* 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.29  17 24.44   55  7.7   3.951   3.970    83   17.0     17.2 137.6  19:11 (141, 59)  
Oct.  6  17 34.01   53 40.5   4.032   4.042    83   17.1     17.3 134.5  19:01 (137, 58)  

* 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.29   2  2.07   27  7.2   1.308   2.208   145   17.0     10.0 296.6   1:32 (  0, 82)  
Oct.  6   1 56.83   27 31.9   1.295   2.228   152   17.0     11.2 283.4   0:59 (  0, 83)  

* 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.29   5 44.20   13 18.1   1.502   1.940    99   17.1     13.4  95.3   4:28 (332, 66)  
Oct.  6   5 49.78   13  9.0   1.467   1.979   105   17.3     10.0  97.5   4:34 (349, 68)  

* 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.29   3 35.90   11  1.8   2.099   2.858   131   17.3     10.4 256.6   3:05 (  0, 66)  
Oct.  6   3 30.49   10 43.7   2.078   2.909   139   17.4     12.9 257.7   2:32 (  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.29  23 56.23   -5 30.2   1.539   2.531   169   17.5      7.8 234.8  23:22 (  0, 49)  
Oct.  6  23 53.42   -5 59.1   1.561   2.533   162   17.6      6.6 236.1  22:52 (  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.29   3 54.56   11 42.8   2.371   3.073   126   17.9      7.2 226.1   3:24 (  0, 67)  
Oct.  6   3 51.53   11  6.7   2.347   3.125   133   17.9      9.2 234.8   2:53 (  0, 66)  

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