Weekly Information about Bright Comets (2001 Sept. 1: South)

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Updated on September 1, 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 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)  
Sept. 1   6 40.69   15 32.8   1.578   1.368    59    8.9     49.8  71.9   4:55 (229, 23)  
Sept. 8   7  3.81   17 18.1   1.542   1.360    60    8.8     49.9  72.7   4:46 (229, 21)  

* C/2001 A2 ( LINEAR )


Fading as expected. Extremely diffused.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1  20  3.08   18 42.1   1.052   1.888   132   10.4      9.7 210.8  21:20 (180, 36)  
Sept. 8  20  1.74   17 44.2   1.189   1.982   128   10.8      8.2 184.7  20:51 (180, 37)  

* P/2001 Q2 ( Petriew )


New periodic comet. It is bright as 10 mag visually. It will be observable visually in the morning sky until November.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1   6 44.12   22 53.6   0.926   0.948    58   11.1     71.2 111.1   4:55 (225, 17)  
Sept. 8   7 15.97   19 48.0   0.966   0.951    57   11.2     66.5 113.7   4:46 (229, 17)  

* 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. 1  23 43.36  -45 22.8   2.622   3.462   140   12.5     36.0 227.5   1:04 (  0, 80)  
Sept. 8  23 24.99  -47 57.9   2.682   3.492   137   12.6     33.7 233.3   0:18 (  0, 77)  

* 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)  
Sept. 1   4 34.46   50  6.5   2.467   2.577    84   13.6     10.7  75.3   4:55 (189,  4)  
Sept. 8   4 41.60   50 24.7   2.278   2.482    89   13.3      9.6  74.7   4:46 (188,  4)  

* 29P/Schwassmann-Wachmann 1


Mitsunori Tsumura reported it is in outburst at 12.0 mag on Aug. 13.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1  18 37.72  -27 43.2   5.344   5.909   119   13.4      1.6 324.7  19:55 (180, 83)  
Sept. 8  18 37.54  -27 33.7   5.442   5.907   112   13.5      1.4   9.1  19:27 (180, 83)  

* 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. 1  23 23.04  -72 47.1   2.673   3.235   115   13.7     14.2 306.1   0:44 (  0, 52)  
Sept. 8  23  6.06  -71 38.4   2.706   3.250   114   13.8     15.5 316.1  23:53 (  0, 53)  

* C/2001 Q3 ( SOHO )


New comet. It must have disappeared at the perihelion passage.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1  10 42.77   19  8.6   1.236   0.309    10   13.9    100.0  30.9  19:04 ( 98,-24)  
Sept. 8  11  6.93   26 48.9   1.364   0.557    21   16.6     68.4  40.3  19:09 (104,-29)  

* 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)  
Sept. 1   2  8.62   48 47.6   3.753   4.162   107   14.1     17.3 334.3   3:28 (180,  6)  
Sept. 8   2  2.40   50 35.6   3.644   4.130   112   14.0     18.1 327.5   2:55 (180,  4)  

* 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. 1  10  7.87    8 50.2   2.600   1.608     8   14.2     43.2 111.2   4:55 (267,-12)  
Sept. 8  10 26.55    7  0.1   2.627   1.644     9   14.5     42.1 112.0   4:46 (269,-11)  

* 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)  
Sept. 1  18 16.72  -22 30.5   0.964   1.667   115   14.6     13.4 161.5  19:34 (180, 78)  
Sept. 8  18 20.16  -23 57.8   0.974   1.616   109   14.5     15.4 142.8  19:10 (180, 79)  

* 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)  
Sept. 1   7 54.74   65 30.7   5.295   4.936    63   15.1     15.6  75.1   4:55 (204,-22)  
Sept. 8   8 11.72   65 58.0   5.230   4.931    67   15.0     15.3  75.2   4:46 (203,-22)  

* 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. 1   6 31.84  -76 30.4  14.084  14.154    91   15.3      4.4 155.9   4:55 (347, 44)  
Sept. 8   6 35.14  -76 59.4  14.148  14.197    90   15.3      4.4 161.5   4:46 (348, 44)  

* 16P/Brooks 2


It will keep the current brightness until October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1   4 28.30   17 34.8   1.571   1.874    90   15.3     25.3  89.9   4:55 (195, 36)  
Sept. 8   4 40.17   17 31.6   1.521   1.888    94   15.3     23.2  92.2   4:46 (194, 36)  

* 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)  
Sept. 1  21  5.80   -1 43.2   5.579   6.510   155   15.3      8.9 272.5  22:22 (180, 57)  
Sept. 8  21  1.86   -1 40.9   5.674   6.556   148   15.4      8.0 271.9  21:51 (180, 57)  

* 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. 1   5  6.61   13 34.7   1.636   1.797    81   15.7     25.1  88.9   4:55 (208, 37)  
Sept. 8   5 18.07   13 35.6   1.604   1.831    85   15.9     22.6  90.4   4:46 (206, 37)  

* 47P/Ashbrook-Jackson


It must be bright enough, but no observations reported since 2001 Feb. 3.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
Sept. 1   5 14.65   33 30.2   2.836   2.812    78   15.9     15.5  68.7   4:55 (201, 18)  
Sept. 8   5 22.34   34  9.2   2.770   2.837    83   15.9     14.0  66.7   4:46 (199, 18)  

* 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. 1  19 45.07   15 50.5   2.575   3.317   130   16.3      8.1 292.0  21:02 (180, 39)  
Sept. 8  19 41.97   16  8.2   2.663   3.343   124   16.4      5.6 291.6  20:31 (180, 39)  

* 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. 1   5 31.11   17 34.1   2.512   2.463    75   16.3     20.2  93.1   4:55 (212, 31)  
Sept. 8   5 40.62   17 24.4   2.445   2.479    80   16.3     18.7  94.9   4:46 (210, 32)  

* 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. 1  16 50.18   61 26.8   3.650   3.680    83   16.5     16.0 151.5  19:04 (173, -7)  
Sept. 8  16 57.95   59 48.8   3.723   3.754    83   16.6     16.4 147.8  19:09 (170, -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. 1  21 38.39   39 22.4   3.694   4.412   130   16.8     24.1 251.5  22:54 (180, 16)  
Sept. 8  21 24.78   38 20.0   3.645   4.362   130   16.7     24.6 246.0  22:13 (180, 17)  

* 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. 1   1 27.99   16 21.4   2.122   2.895   131   16.9     19.8 301.4   2:48 (180, 39)  
Sept. 8   1 18.56   17 34.2   1.973   2.819   139   16.7     24.2 295.7   2:11 (180, 37)  

* 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. 1   5 14.19   29  7.8   2.435   2.447    78   16.8     16.8  82.5   4:55 (203, 22)  
Sept. 8   5 22.60   29 21.9   2.380   2.479    83   16.8     14.9  82.8   4:46 (201, 22)  

* 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. 1   3 38.10   11 53.1   1.176   1.719   103   17.2     42.3  14.0   4:55 (181, 43)  
Sept. 8   3 42.46   17  9.7   1.056   1.671   108   16.8     50.4   8.8   4:34 (180, 38)  

* 73P/Schwassmann-Wachmann 3


KenIchi Kadota, Ageo, Japan, observed it as 16.8 mag on July 16. 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. 1   3 44.34   11 43.3   2.248   2.648   101   16.9      1.3 108.5   4:55 (183, 43)  
Sept. 8   3 44.28   11 38.4   2.205   2.702   108   17.0      1.8 237.4   4:36 (180, 43)  

* 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)  
Sept. 1   2  9.57    9  4.7   3.487   4.151   125   17.0      5.7 196.8   3:29 (180, 46)  
Sept. 8   2  8.44    8 24.6   3.459   4.205   132   17.1      6.8 207.8   3:01 (180, 47)  

* 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. 1   2  8.63   23 36.1   1.446   2.139   120   17.1     10.5  17.3   3:28 (180, 31)  
Sept. 8   2  9.42   24 42.8   1.402   2.155   126   17.1      9.0 359.7   3:01 (180, 30)  

* 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. 1   4 28.45  -16 31.6   5.633   5.814    95   17.2      9.5 154.3   4:55 (216, 68)  
Sept. 8   4 30.17  -17 32.3   5.587   5.852   100   17.2      9.3 161.3   4:46 (207, 71)  

* 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. 1   3 54.88   13 36.4   2.524   2.862    99   17.9      5.6 121.5   4:55 (186, 41)  
Sept. 8   3 56.60   13 13.6   2.480   2.915   105   17.9      4.3 146.2   4:46 (181, 42)  

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