Weekly Information about Bright Comets (2001 Oct. 13: North)

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Updated on October 15, 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)  
Oct. 13   9  2.94   24 51.2   1.401   1.397    68   10.2     47.7  76.4   4:40 (273, 51)  
Oct. 20   9 26.65   26  6.8   1.380   1.418    71   10.3     46.5  76.7   4:45 (272, 53)  

* 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)  
Oct. 13   9 12.34    5  5.0   1.172   1.116    61   10.8     44.0 120.6   4:40 (294, 38)  
Oct. 20   9 29.13    2 33.0   1.204   1.170    63   11.1     40.0 121.7   4:45 (300, 39)  

* 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)  
Oct. 13   4 57.16   51 11.9   1.328   1.989   116   11.5      3.8 253.3   3:31 (180, 74)  
Oct. 20   4 52.42   50 55.8   1.144   1.885   123   11.0     10.2 248.4   2:59 (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)  
Oct. 13   1  1.62   57 39.8   3.265   3.980   129   12.6     20.3 291.0  23:31 (180, 67)  
Oct. 20   0 44.62   58 20.6   3.229   3.952   130   12.5     20.0 283.2  22:46 (180, 67)  

* P/2001 Q6 ( NEAT )


New periodic comet. It bursted out and brightened 1-2 mag. Akimasa Nakamura observed it at 13.6 mag on Sept. 28. It is at opposition and reach to 13 mag in October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13   3 16.56   63  0.4   0.667   1.454   120   13.2     98.8 343.7   1:52 (180, 62)  
Oct. 20   2 27.87   73 17.3   0.678   1.434   116   13.2     91.6 330.3   0:39 (180, 52)  

* C/1999 Y1 ( LINEAR )


It locates high in the Southern Hemisphere. Northern people can never see it again. Some reported this at 11-12 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13  21 57.09  -53 32.6   3.251   3.658   106   13.3     17.1 265.8  20:27 (  0,  1)  
Oct. 20  21 44.90  -53 34.0   3.399   3.693    99   13.5     14.0 272.6  19:48 (  0,  1)  

* 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)  
Oct. 13  18 45.49  -26 40.4   5.979   5.897    80   13.7      5.9  73.9  18:52 ( 23, 24)  
Oct. 20  18 48.69  -26 28.7   6.086   5.895    74   13.7      6.8  75.6  18:43 ( 27, 23)  

* 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)  
Oct. 13  19 16.28  -29 46.4   1.025   1.392    86   14.0     33.2 101.6  18:52 ( 15, 24)  
Oct. 20  19 34.92  -30 25.5   1.032   1.357    83   13.9     36.8  97.2  18:43 ( 15, 23)  

* 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)  
Oct. 13  22 22.63  -62  8.1   2.979   3.346   102   14.1     19.8 353.4  20:54 (  0, -7)  
Oct. 20  22 21.32  -59 48.3   3.055   3.369    99   14.2     20.2 358.7  20:25 (  0, -5)  

* 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)  
Oct. 13   9 34.71   68 10.7   4.905   4.917    84   14.9     13.3  72.5   4:40 (205, 46)  
Oct. 20   9 50.37   68 38.7   4.842   4.916    88   14.8     12.7  71.0   4:45 (203, 47)  

* 51P/Harrington


KenIchi Kadota observed it at 14.3 mag on Sept. 23. It bursted out and brightened 2.5 mag. Now it is 14.5 mag.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13   5 53.64   13  0.0   1.434   2.018   110   14.9      6.3 101.2   4:27 (  0, 68)  
Oct. 20   5 55.65   12 52.2   1.403   2.059   117   15.1      2.5 113.6   4:02 (  0, 68)  

* C/1995 O1 ( Hale-Bopp )


Only southern people can observe it. Northern people can never see it again. Observations since 2001 July reported it between 17.5 and 20.4 mag, much fainter than the ephemeris.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13   6 37.74  -79 32.0  14.480  14.410    84   15.4      4.4 192.6   4:40 (358,-25)  
Oct. 20   6 34.51  -80  1.4  14.547  14.452    82   15.4      4.4 199.9   4:41 (  0,-25)  

* 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)  
Oct. 13  20 49.36   -1 32.6   6.323   6.785   113   15.9      2.6 279.4  19:21 (  0, 53)  
Oct. 20  20 48.44   -1 29.1   6.476   6.831   106   16.0      1.5 292.5  18:52 (  0, 54)  

* 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)  
Oct. 13   5 19.15   15 55.3   1.292   1.982   119   16.0      8.6 118.0   3:53 (  0, 71)  
Oct. 20   5 21.90   15 26.2   1.255   2.005   125   16.0      5.6 138.7   3:28 (  0, 70)  

* 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)  
Oct. 13   5 45.17   37 20.8   2.443   2.965   112   16.1      6.0  23.9   4:19 (180, 88)  
Oct. 20   5 45.86   37 58.5   2.385   2.991   118   16.1      5.3 359.0   3:52 (180, 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)  
Oct. 13   6 14.32   16  0.2   2.106   2.568   106   16.4      8.7 109.2   4:40 (354, 71)  
Oct. 20   6 17.65   15 40.2   2.042   2.588   112   16.4      6.2 117.1   4:24 (  0, 71)  

* 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)  
Oct. 13  20 31.23   30 10.0   3.648   4.110   110   16.4     21.1 220.8  19:02 (  0, 85)  
Oct. 20  20 24.51   28 18.6   3.690   4.060   104   16.4     19.5 215.9  18:43 ( 27, 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)  
Oct. 13  23 52.96   22 34.8   1.489   2.433   155   16.4     43.9 276.0  22:22 (  0, 78)  
Oct. 20  23 30.75   22 57.7   1.457   2.355   146   16.5     43.8 272.9  21:33 (  0, 78)  

* 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)  
Oct. 13   7 35.16  -20  4.5   5.365   5.321    82   16.5      2.0 185.2   4:40 (335, 31)  
Oct. 20   7 34.74  -20 18.3   5.319   5.367    87   16.6      2.4 218.9   4:45 (344, 33)  

* 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)  
Oct. 13   1 54.46    4 31.4   3.492   4.476   169   16.9     10.2 228.8   0:29 (  0, 60)  
Oct. 20   1 50.86    3 45.7   3.541   4.531   172   16.9     10.0 230.4  23:54 (  0, 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)  
Oct. 13   5 46.73   30  6.7   2.098   2.644   112   16.9      2.6  71.6   4:21 (  0, 85)  
Oct. 20   5 47.30   30 11.8   2.047   2.678   119   17.0      0.8 326.5   3:54 (  0, 85)  

* 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)  
Oct. 13  19 42.76   16 39.9   3.188   3.491    99   16.9      5.4  84.0  18:52 ( 27, 70)  
Oct. 20  19 45.80   16 44.5   3.302   3.524    94   17.1      7.1  83.8  18:43 ( 37, 68)  

* P/2001 R6 ( LINEAR-Skiff )


New periodic comet. It keeps 17 mag until November, then will fade out.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13   1  3.95  -22 36.4   1.196   2.118   149   16.9     12.2 298.4  23:34 (  0, 32)  
Oct. 20   0 58.75  -21 46.5   1.213   2.116   146   17.0     12.9 310.8  23:02 (  0, 33)  

* 65P/Gunn


It will be 15 mag in next spring at opposition.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13  10 44.90   17 16.7   4.466   3.815    44   17.0     16.0 107.3   4:40 (267, 26)  
Oct. 20  10 52.27   16 44.2   4.370   3.796    49   17.0     15.6 106.8   4:45 (271, 31)  

* 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)  
Oct. 13   1 50.70   27 43.3   1.292   2.249   158   17.1     12.2 273.3   0:26 (  0, 83)  
Oct. 20   1 44.15   27 41.8   1.301   2.270   162   17.1     12.5 265.1  23:47 (  0, 83)  

* 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)  
Oct. 13  23 51.15   -6 21.4   1.595   2.536   155   17.1      4.9 237.0  22:22 (  0, 49)  
Oct. 20  23 49.65   -6 35.9   1.640   2.540   147   17.2      2.7 236.9  21:53 (  0, 48)  

* 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)  
Oct. 13  17 43.83   52 17.4   4.115   4.113    82   17.2     17.4 131.4  18:52 (134, 58)  
Oct. 20  17 53.84   50 59.1   4.201   4.184    82   17.3     17.4 128.4  18:43 (131, 56)  

* P/2001 R1 ( LONEOS )


New periodic comet. It will reach to 16 mag in February.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13  21 19.83  -24 25.9   1.294   1.937   114   17.4      6.7  13.8  19:51 (  0, 31)  
Oct. 20  21 21.66  -23 35.3   1.318   1.889   108   17.4      9.6  35.2  19:26 (  0, 31)  

* C/2001 A2 ( LINEAR )


No longer observable visually. Because it was extremely diffused, it is very faint by CCD observations. Fading very rapidly.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Oct. 13  20 16.83   13 56.5   1.952   2.443   107   17.5     12.0 111.7  18:52 (  2, 69)  
Oct. 20  20 22.50   13 28.6   2.117   2.532   102   18.0     12.9 105.9  18:43 ( 11, 68)  

* 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)  
Oct. 13   3 47.45   10 28.8   2.333   3.177   141   17.9     11.0 240.2   2:22 (  0, 66)  
Oct. 20   3 42.49    9 50.3   2.330   3.228   149   18.0     12.6 244.0   1:49 (  0, 65)  

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