Weekly Information about Bright Comets (2001 June 23: South)

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Updated on June 24, 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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* C/2001 A2 ( LINEAR )


It has brightened suddenly on around June 10 and reached to 3.3 mag. But it faded to 4.5 mag until June 19. It will appear at dawn also in the Northern Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   2 12.40  -17 48.0   0.265   0.961    70    4.4    173.8 296.5   5:37 (253, 52)  
June 30   0 52.19   -6 42.6   0.244   1.041    88    4.6    204.5 301.3   5:38 (202, 60)  

* 19P/Borrelly


It locates high in the Southern Hemisphere. In the Northern Hemisphere, it appears at dawn at 10 mag in late July, then reaches to 8 mag in autumn.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   3 13.03   -3 52.2   2.107   1.656    50   11.6     43.3  67.3   5:37 (250, 32)  
June 30   3 31.92   -1 54.7   2.040   1.614    51   11.2     44.2  67.6   5:38 (246, 33)  

* C/1999 Y1 ( LINEAR )


Appearing at dawn. However, it never locates high and will not be observable after August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   1  1.79  -14  8.2   3.169   3.216    83   12.4     18.4 180.9   5:37 (226, 62)  
June 30   1  1.16  -16 25.4   3.056   3.235    90   12.4     20.9 186.4   5:38 (215, 68)  

* 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)  
June 23   6 23.36   22  1.9   2.444   1.432     4   12.8     49.5  93.9  18:26 (107,-14)  
June 30   6 48.13   21 30.0   2.445   1.432     3   12.8     49.5  96.3  18:29 (106,-15)  

* 29P/Schwassmann-Wachmann 1


It bursted out on May 17 and reached to 12 mag. Although it faded after this, it bursted out again on June 12.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  19  4.93  -28 24.9   4.939   5.930   166   13.3      6.6 267.4   1:01 (180, 83)  
June 30  19  1.34  -28 26.4   4.919   5.928   172   13.3      6.9 268.9   0:30 (180, 83)  

* 24P/Schaumasse


Diffused and hard to see. It must be fading rapidly now.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  10  5.93   21 38.9   1.683   1.376    54   13.4     56.7 112.4  18:26 (143, 24)  
June 30  10 31.41   19  2.5   1.740   1.420    54   14.1     55.0 114.3  18:29 (140, 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)  
June 23   0 42.09  -71 41.4   2.668   3.156   109   13.6      6.7 118.6   5:37 (352, 52)  
June 30   0 49.37  -72  5.3   2.647   3.157   110   13.6      5.2 133.9   5:38 (355, 53)  

* C/1999 T2 ( LINEAR )


It was much brighter visually, around 12 mag. However, it will fade out rapidly after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  13 10.67   21 21.1   3.427   3.661    95   14.3     19.1 215.1  19:03 (180, 34)  
June 30  13  5.89   19 33.0   3.575   3.698    88   14.4     17.4 208.6  18:31 (180, 36)  

* 51P/Harrington


Not yet observed in this return. Appearing at dawn. It will fade gradually after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   2 22.44    7 20.1   1.901   1.578    56   14.3     42.4  75.1   5:37 (230, 33)  
June 30   2 41.55    8 32.3   1.875   1.588    57   14.4     41.3  76.3   5:38 (227, 34)  

* C/2000 OF8 ( Spacewatch )


In the Northern Hemisphere, it is not observable, will appear at dawn in November at 16.5 mag and fade. In the Southern Hemisphere, it locates high.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  13 27.35  -46 51.0   1.536   2.230   120   14.4     60.6 310.0  19:18 (  0, 78)  
June 30  13  1.21  -42 23.5   1.650   2.213   109   14.5     49.8 316.9  18:29 (  4, 83)  

* C/1999 T1 ( McNaught-Hartley )


Fading out 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)  
June 23  16 56.39   75 53.3   2.927   2.929    80   14.5     10.3 227.8  22:47 (180,-21)  
June 30  16 43.64   74 57.3   3.006   3.005    80   14.7     10.8 214.1  22:08 (180,-20)  

* C/2001 K5 ( LINEAR )


New comet. It reaches to 13.5 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)  
June 23  15 10.47  -20 14.0   5.470   6.274   139   14.7      8.7 325.4  21:03 (180, 75)  
June 30  15  8.26  -19 25.1   5.523   6.245   131   14.7      7.9 329.8  20:33 (180, 74)  

* 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)  
June 23   5 35.40  -73 19.4  13.563  13.722    96   15.0      4.2 104.7   5:37 (340, 34)  
June 30   5 42.05  -73 28.1  13.603  13.765    97   15.1      4.3 109.8   5:38 (340, 35)  

* 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)  
June 23   2 44.36    8 20.2   2.553   2.065    50   15.2     22.9  73.0   5:37 (234, 29)  
June 30   2 54.33    9  4.0   2.545   2.127    54   15.4     21.1  73.9   5:38 (229, 31)  

* C/1999 K5 ( LINEAR )


It hardly faded out for about half of a year since the perihelion passage in 2000 June.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   6 36.49  -21 15.1   5.264   4.605    45   15.2     13.4  63.9  18:26 ( 73, 13)  
June 30   6 42.43  -20 37.0   5.328   4.648    43   15.3     12.8  67.1  18:29 ( 70,  8)  

* 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)  
June 23   5 16.00   60  0.8   5.780   5.014    37   15.3     16.0  70.1   5:37 (214,-27)  
June 30   5 30.32   60 38.3   5.751   5.004    39   15.3     16.2  70.6   5:38 (212,-25)  

* C/2000 WM1 ( LINEAR )


Appearing at dawn. It reaches to 4 mag in 2002 January.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   3  3.49   46 34.6   4.132   3.463    43   15.5     14.5  77.8   5:37 (212, -3)  
June 30   3 13.11   46 55.9   3.993   3.379    46   15.3     14.4  77.5   5:38 (209, -2)  

* C/2000 SV74 ( LINEAR )


Appearing at dawn. No observations reported since 2001 Jan. 15. It will brighten and locate higher after this. It will be observable at 14 mag for one year from 2001 September.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23   2  6.34   32  7.0   5.043   4.510    53   15.6     13.7  27.2   5:37 (211, 15)  
June 30   2  9.62   33 33.8   4.918   4.473    58   15.5     13.8  23.7   5:38 (206, 16)  

* 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)  
June 23  15  8.49    7 20.7   7.006   7.657   126   15.6      8.3 233.3  21:01 (180, 48)  
June 30  15  5.56    6 44.7   7.106   7.673   120   15.6      7.8 227.6  20:31 (180, 48)  

* 16P/Brooks 2


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)  
June 23   1 55.11   11 19.4   2.119   1.850    60   15.8     36.2  73.5   5:37 (220, 34)  
June 30   2 11.64   12 28.5   2.060   1.843    63   15.7     35.8  74.6   5:38 (217, 35)  

* C/2001 K3 ( Skiff )


New comet. 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)  
June 23  20 48.18    3  7.3   2.340   3.119   132   15.8     20.7 329.1   2:44 (180, 52)  
June 30  20 42.73    5  9.3   2.302   3.133   138   15.8     21.2 323.5   2:11 (180, 50)  

* 74P/Smirnova-Chernykh


It is observable in the evening sky until July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  11 42.10    8 38.8   3.606   3.589    80   15.9     11.7 122.5  18:26 (162, 45)  
June 30  11 47.00    7 53.7   3.706   3.592    75   16.0     12.8 121.3  18:29 (154, 44)  

* C/2000 K2 ( LINEAR )


Appearing at dawn. 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)  
June 23   1 39.95   11 34.2   3.948   3.624    64   16.4     13.3  85.0   5:37 (216, 36)  
June 30   1 45.98   11 40.1   3.906   3.675    69   16.4     12.1  87.4   5:38 (210, 38)  

* C/2001 C1 ( LINEAR )


It keeps around 17 mag until 2002 autumn because it is far away. However, it goes to the southern sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  13 27.56  -18  4.7   5.013   5.521   115   16.4      5.8 233.4  19:20 (180, 73)  
June 30  13 25.60  -18 29.8   5.099   5.502   108   16.4      5.0 221.8  18:51 (180, 74)  

* C/1997 BA6 ( Spacewatch )


Appearing at dawn. It will fade out gradually after this. It is now a bit brighter than this ephemeris.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  21 49.63   -3 54.3   5.440   6.053   122   16.5      7.6 299.5   3:45 (180, 59)  
June 30  21 46.30   -3 29.4   5.395   6.099   130   16.5      8.3 293.7   3:14 (180, 58)  

* 95P/(2060) Chiron


No observations reported since May 1, 2000.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  17 41.27  -16 58.1   9.781  10.786   171   16.7      4.0 272.6  23:33 (180, 72)  
June 30  17 39.35  -16 57.0   9.813  10.799   165   16.7      3.9 271.7  23:04 (180, 72)  

* P/2001 K1 ( NEAT )


New periodic comet. It will fade out after this and be fainter than 18 mag in August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  15  7.97   -7 34.2   2.054   2.858   134   17.1      7.9 207.3  21:01 (180, 63)  
June 30  15  6.83   -8 24.4   2.141   2.879   127   17.2      7.5 189.5  20:32 (180, 63)  

* C/1999 N4 ( LINEAR )


Fading gradually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  13 59.12    8  5.9   5.760   6.209   111   17.2     10.1 263.1  19:52 (180, 47)  
June 30  13 54.75    7 55.7   5.898   6.233   104   17.3      8.7 258.9  19:20 (180, 47)  

* C/2000 K1 ( LINEAR )


Fading gradually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 23  15 20.89   38 53.9   6.967   7.321   106   17.3      8.1 269.4  21:13 (180, 16)  
June 30  15 16.30   38 50.5   7.060   7.345   102   17.3      7.3 263.2  20:41 (180, 16)  

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