Weekly Information about Bright Comets (2001 Aug. 11: North)

Japanese version
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Updated on August 14, 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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* C/2001 A2 ( LINEAR )


It bursted out and reached to 4.5-5.0 mag on July 12, then it faded to 9 mag now. It will fade out rapidly after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  20 24.69   21 11.0   0.681   1.600   140    8.7     27.2 261.4  23:03 (  0, 76)  
Aug. 18  20 13.70   20 31.9   0.798   1.697   138    9.3     18.8 249.0  22:25 (  0, 75)  

* 19P/Borrelly


It reaches to 8 mag in autumn. But it is 1.5 mag fainter than this ephemeris recently.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   5 33.82    9 56.2   1.705   1.417    56    9.4     48.6  70.0   3:42 (274, 23)  
Aug. 18   5 55.68   11 51.2   1.660   1.396    56    9.2     49.1  70.6   3:50 (275, 27)  

* C/1999 Y1 ( LINEAR )


It locates high in the Southern Hemisphere. But it will not be observable soon in the Northern Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   0 27.46  -35 26.2   2.590   3.376   134   12.3     36.7 212.6   3:10 (  0, 20)  
Aug. 18   0 14.94  -38 59.5   2.576   3.404   138   12.3     37.5 217.2   2:30 (  0, 16)  

* 29P/Schwassmann-Wachmann 1


Mitsunori Tsumura reported it is in outburst at 14.0 mag on July 14.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  18 41.87  -28  7.8   5.097   5.915   140   13.3      4.3 283.2  21:21 (  0, 27)  
Aug. 18  18 39.91  -28  0.4   5.170   5.913   133   13.4      3.4 289.4  20:52 (  0, 27)  

* 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)  
Aug. 11   9  7.46   14  7.7   2.526   1.516     4   13.5     46.4 107.8   3:42 (239,-16)  
Aug. 18   9 28.34   12 25.4   2.549   1.544     5   13.7     45.4 109.1   3:50 (243,-15)  

* 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)  
Aug. 11   0 17.98  -74 13.5   2.615   3.196   116   13.6      9.5 270.9   3:01 (  0,-19)  
Aug. 18   0  0.50  -74  3.9   2.628   3.208   116   13.7     11.2 283.3   2:16 (  0,-19)  

* C/2000 WM1 ( LINEAR )


The brightening is slower than expected. 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)  
Aug. 11   4  9.56   49  6.3   3.019   2.854    70   14.4     12.9  76.4   3:42 (233, 53)  
Aug. 18   4 18.31   49 27.1   2.838   2.763    75   14.2     12.3  76.1   3:50 (231, 57)  

* C/2000 SV74 ( LINEAR )


It will be observable brighter than 15 mag until the end of 2002. It is brighter than 14.0 mag visually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   2 17.82   43 21.0   4.122   4.261    90   14.4     15.4 353.6   3:42 (235, 73)  
Aug. 18   2 16.14   45  8.8   3.994   4.227    96   14.3     15.9 347.4   3:50 (215, 77)  

* P/2001 MD7 ( LINEAR )


It reaches to 13.7 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)  
Aug. 11  18 21.25  -17 59.3   0.956   1.829   136   15.0     16.2 217.6  21:00 (  0, 37)  
Aug. 18  18 17.42  -19 29.7   0.954   1.774   128   14.9     14.1 203.2  20:29 (  0, 35)  

* C/1999 U4 ( Catalina-Skiff )


Getting higher in the morning sky. 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)  
Aug. 11   7  4.28   64  3.5   5.477   4.953    54   15.1     16.1  74.0   3:42 (211, 31)  
Aug. 18   7 20.96   64 33.6   5.418   4.947    57   15.1     16.0  74.4   3:50 (211, 33)  

* C/1997 BA6 ( Spacewatch )


It was 15 mag in July, 1.5 mag brighter than expected.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  21 19.45   -1 58.0   5.382   6.373   166   15.1     10.4 276.0   0:03 (  0, 53)  
Aug. 18  21 14.68   -1 51.3   5.432   6.418   165   15.2     10.1 274.6  23:26 (  0, 53)  

* 51P/Harrington


KenIchi Kadota, Ageo, Japan, observed it at 15.1 mag on July 1.It will fade gradually after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   4 25.51   12 59.8   1.724   1.706    71   15.1     31.9  84.5   3:42 (282, 39)  
Aug. 18   4 40.24   13 17.6   1.696   1.734    74   15.3     29.8  85.9   3:50 (286, 43)  

* 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)  
Aug. 11   6 18.40  -75 11.8  13.902  14.025    94   15.2      4.4 140.0   3:42 (343,-31)  
Aug. 18   6 23.39  -75 36.4  13.961  14.068    94   15.2      4.4 145.2   3:50 (344,-30)  

* C/1999 T2 ( LINEAR )


It will set in the evening sky soon, then appear in the morning sky at 16 mag in November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  12 58.74    9 59.8   4.465   3.934    52   15.2     12.2 170.6  20:26 ( 88, 20)  
Aug. 18  12 59.92    8 37.0   4.598   3.976    46   15.3     12.0 165.6  20:16 ( 89, 16)  

* 16P/Brooks 2


Yusuke Ezaki observed it at 16.8 mag on July 14. It will keep the current brightness until October. Not yet observed in this return. It appears at dawn.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   3 47.21   17  1.1   1.728   1.845    80   15.3     30.5  83.8   3:42 (285, 49)  
Aug. 18   4  1.68   17 19.9   1.675   1.853    83   15.3     29.0  85.7   3:50 (289, 53)  

* 47P/Ashbrook-Jackson


Appearing at dawn. No observations reported since 2001 Feb. 3.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   4 47.20   31 26.7   3.021   2.739    64   15.8     19.4  71.2   3:42 (257, 43)  
Aug. 18   4 57.00   32  9.4   2.962   2.763    68   15.8     18.2  70.8   3:50 (259, 48)  

* C/1999 J2 ( Skiff )


It is observable as 15.5 mag until autumn.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  14 57.04    2 38.1   7.835   7.777    82   15.9      6.2 182.8  20:26 ( 60, 39)  
Aug. 18  14 57.10    1 54.7   7.963   7.795    76   15.9      6.2 175.0  20:16 ( 63, 35)  

* C/2001 K3 ( Skiff )


It is observable at 16 mag in good condition until late August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  20  0.62   14  3.5   2.367   3.244   144   16.0     15.5 299.0  22:39 (  0, 69)  
Aug. 18  19 54.50   14 49.8   2.426   3.267   140   16.1     13.2 296.1  22:06 (  0, 70)  

* C/1999 T1 ( McNaught-Hartley )


Fading out gradually. It locates in the northern sky and the northern people can observe it until it disappears. It keeps still 14.0 mag visually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  16 32.01   66 23.7   3.439   3.459    82   16.1     14.5 164.9  20:26 (166, 57)  
Aug. 18  16 37.01   64 45.1   3.509   3.533    83   16.2     15.1 160.0  20:16 (163, 58)  

* C/2001 K5 ( LINEAR )


It reaches to 15 mag in 2002 summer, and keeps observable for a long while.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  15  6.02  -15 32.9   5.993   6.079    90   16.2      4.8  30.7  20:26 ( 44, 27)  
Aug. 18  15  7.46  -15  5.2   6.082   6.053    83   16.2      5.1  42.9  20:16 ( 48, 25)  

* 61P/Shajn-Schaldach


Appearing at dawn. No observations reported since 200 Sept. 20.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   4 58.59   17 39.9   2.703   2.421    63   16.3     23.9  88.4   3:42 (272, 35)  
Aug. 18   5 10.02   17 42.2   2.641   2.434    67   16.3     22.8  89.9   3:50 (276, 40)  

* 73P/Schwassmann-Wachmann 3


Appearing at dawn. No observations reported since 2001 Jan. 4.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   3 36.91   11 33.2   2.379   2.482    83   16.5      9.0  80.9   3:42 (294, 47)  
Aug. 18   3 40.59   11 40.9   2.337   2.538    89   16.6      6.6  83.1   3:50 (302, 53)  

* 44P/Reinmuth 2


Appearing at dawn. No observations reported since Aug. 23, 2000.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11   4 43.59   28  8.2   2.586   2.352    65   16.6     21.8  80.4   3:42 (262, 43)  
Aug. 18   4 54.60   28 31.5   2.538   2.383    69   16.7     20.3  81.2   3:50 (264, 48)  

* C/2000 K2 ( LINEAR )


No observations reported since 2001 Jan. 15. It will fade out gradually then 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)  
Aug. 11   2  8.45   10 39.5   3.610   3.991   104   16.8      4.8 137.0   3:42 (323, 61)  
Aug. 18   2  9.61   10 12.5   3.564   4.044   111   16.9      4.5 159.0   3:50 (340, 64)  

* 95P/(2060) Chiron


Fading very slowly. It will be around 17 mag for a year after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Aug. 11  17 31.15  -17  1.6  10.273  10.878   124   16.8      1.4 256.9  20:26 (  5, 38)  
Aug. 18  17 30.63  -17  4.0  10.385  10.892   117   16.9      0.8 243.8  20:16 ( 10, 37)  

* C/2001 N2 ( LINEAR )


New comet. 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)  
Aug. 11  22 18.93   40 46.8   3.934   4.559   122   17.1     20.6 268.8   1:02 (180, 84)  
Aug. 18  22  5.84   40 35.6   3.836   4.507   126   17.0     22.0 262.9   0:22 (180, 84)  

* 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)  
Aug. 11   1 43.62   12 55.3   2.626   3.118   109   17.6     10.8 329.4   3:42 (333, 66)  
Aug. 18   1 40.23   14  1.5   2.451   3.044   116   17.4     13.0 317.8   3:50 (356, 69)  

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