Weekly Information about Bright Comets (2000 July 15: South)

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 Updated on July 18, 2000
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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/1999 S4 ( LINEAR )

 Image: 2000 Feb. 12
Now it is about 7 mag. The brightening stopped in July. It will be only 6.7 mag even at the peak. In the Northern Hemisphere, it keeps observable until early August. In the Southern Hemisphere, it locates high after late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   4 41.50   61 44.2   0.503   0.796    50    7.2    217.0  60.4   5:36 (203,-15)  
July 22   9 42.88   56 17.6   0.374   0.769    40    6.7    399.5 130.5  18:39 (145,-18)

* C/1999 T1 ( McNaught-Hartley )
It is expected to be bright as 7 mag in late 2000. Northern people cannot observe it until December. It has been brightening as expected. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   5 21.21  -35 24.4   2.725   2.483    65   11.6     34.9 103.4   5:36 (290, 39)  
July 22   5 41.25  -36 22.1   2.627   2.405    66   11.4     36.6 103.6   5:33 (291, 41)

* (433) Eros
Bright Amor asteroid. It reaches to 12 mag in mid July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  20  1.78  -24 50.6   0.764   1.778   173   12.2     27.3 278.2   0:31 (180, 80)  
July 22  19 47.88  -24 19.2   0.767   1.780   174   12.2     27.2 280.6  23:44 (180, 79)

* C/1997 BA6 ( Spacewatch )

 Image: 1998 Dec. 5
Only southern people can observe it. In the Northern Hemisphere, the altitude will be higher than 10 deg after September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  22  7.65  -49 49.5   3.205   4.030   139   13.1     16.2 275.1   2:36 (  0, 75)  
July 22  21 55.63  -49 34.2   3.201   4.063   143   13.1     17.4 279.5   1:57 (  0, 75)

* 29P/Schwassmann-Wachmann 1

 Image: 1999 June 12
The altitude will be 24 deg at best in the Northern Hemisphere. Now it is not in outburst. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  16 40.75  -31  1.7   5.237   6.044   139   13.5      4.2 297.8  21:06 (180, 86)  
July 22  16 38.97  -30 47.9   5.310   6.042   132   13.5      3.4 305.4  20:36 (180, 86)

* C/1999 K5 ( LINEAR )

 Image: 1999 July 31
It is only observable in the Southern Hemisphere until the end of 2001. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   5 49.84  -74 48.7   2.958   3.257    97   13.5     23.0  76.3   5:36 (342, 39)  
July 22   6 26.54  -74  4.3   2.998   3.260    95   13.5     21.0  71.7   5:33 (341, 38)

* 47P/Ashbrook-Jackson
It will be 14 mag from August to November. But the altitude keeps lower than 20 deg until late August. It was observed as about 15 mag on May 4. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  20 37.52  -37 25.7   1.629   2.606   159   13.6     10.0 256.2   1:06 (  0, 88)  
July 22  20 31.42  -37 38.3   1.600   2.585   161   13.5     10.9 263.7   0:32 (  0, 87)

* C/1999 K8 ( LINEAR )

 Image: 1999 Dec. 30
Because it is far away, it keeps 14 mag until late 2000. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   1 40.56   12 23.2   4.222   4.256    85   13.9      9.7 117.0   5:36 (191, 42)  
July 22   1 44.40   11 49.5   4.125   4.266    91   13.9      9.1 125.0   5:33 (184, 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)  
July 15   6  8.83  -70  7.4  11.401  11.499    93   13.9      5.3 119.5   5:36 (335, 38)  
July 22   6 15.05  -70 27.0  11.452  11.546    92   13.9      5.3 124.4   5:33 (336, 39)

* C/1999 T2 ( LINEAR )

 Image: 2000 Jan. 8
It will be observable in good condition at the same magnitude until October. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  20 41.21   63  5.7   3.065   3.304    94   14.1     32.6 287.1   1:11 (180, -8)  
July 22  20  7.21   63 49.5   3.013   3.278    95   14.1     33.6 275.7   0:10 (180, -9)

* 2P/Encke
It will brighten rapidly in the morning low sky until mid August. It is not observable after perihelion passage. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   4 29.36   29  5.0   1.750   1.225    43   14.9     59.0  79.7   5:36 (223, 10)  
July 22   5  2.77   30  6.7   1.632   1.117    42   14.1     66.9  83.6   5:33 (224,  8)

* 2000 NM
New near-earth asteroid. It will be brighter than 16 mag until late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  17 37.31   36  6.4   0.143   1.086   115   14.3    233.9 348.9  22:00 (180, 17)  
July 22  17  3.79   58 50.3   0.169   1.037    92   15.2    163.2 343.3  20:58 (180, -5)

* C/1999 Y1 ( LINEAR )

 Image: 2000 Feb. 5
Appearing at dawn. It will be observable as 13.5 mag under good condition from October to January. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   3 31.05   49 11.6   4.403   3.921    55   15.2      2.0  49.0   5:36 (202,  0)  
July 22   3 31.69   49 21.5   4.270   3.882    61   15.0      1.5   9.3   5:33 (199,  2)

* C/1999 J2 ( Skiff )

 Image: 2000 Jan. 28
It will be observable as 15 mag with a good condition. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  15 17.60   31 16.6   6.923   7.139    98   15.2     10.5 206.1  19:43 (180, 24)  
July 22  15 15.37   30  9.9   7.004   7.143    93   15.3     10.3 200.5  19:13 (180, 25)

* (1362) Griqua
Unusual asteroid. It reaches to 14.2 mag in November. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   2 48.18   -7 14.1   2.037   2.056    76   15.6     30.2  90.6   5:36 (225, 54)  
July 22   3  2.21   -7 19.6   1.972   2.050    79   15.5     29.5  92.5   5:33 (222, 56)

* 2000 LC16
New near-earth asteroid. It will be at the peak of 15 mag in mid August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  21 42.75  -16 57.5   0.302   1.288   150   15.8     44.2  45.8   2:10 (180, 72)  
July 22  21 57.98  -13  4.2   0.276   1.267   152   15.6     47.4  41.2   1:58 (180, 68)

* 2000 GK137
New near-earth asteroid. It will be brighter than 16 mag until mid July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   0  9.30   62 32.4   0.160   1.003    80   15.9    124.7 111.0   4:34 (180, -8)  
July 22   1 42.69   55  0.8   0.167   0.991    76   16.1    116.0 129.9   5:33 (181,  0)

* 9P/Tempel 1
It was 17.1 mag on May 11, much fainter than the ephemeris. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   0 41.03  -10 20.1   1.816   2.327   107   16.0      6.6 110.7   5:09 (180, 65)  
July 22   0 43.28  -10 40.6   1.778   2.368   113   16.1      4.8 137.0   4:43 (180, 66)

* P/1991 T1 ( Shoemaker-Levy 5 )
Unrecovered periodic comet in first return. The condition has been bad before now. After this, it will be brighter and higher, until October when it will locate overhead as 15.4 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   3  5.13   15 43.8   2.228   2.012    64   16.3     32.4  66.4   5:36 (214, 32)  
July 22   3 19.50   17 13.0   2.159   2.004    67   16.2     31.9  66.8   5:33 (210, 32)

* 75P/Kohoutek
It reached to 13 mag at return in 1987, however, it was not observed at return in 1994. The ephemeris says it will reach to 13.7 mag in November, but it may be much fainter. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   1  9.95   14 25.3   2.378   2.605    91   16.5     16.8  60.3   5:36 (180, 41)  
July 22   1 16.78   15 22.5   2.257   2.569    95   16.4     15.8  59.5   5:17 (180, 40)

* C/1999 U4 ( Catalina-Skiff )

 Image: 1999 Nov. 28
It will be observable in good condition as 15 mag from autumn to winter. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   3 18.70   37 16.4   6.569   6.086    57   16.4     10.2  40.7   5:36 (206, 12)  
July 22   3 22.45   38 10.8   6.448   6.056    63   16.4      9.9  37.6   5:33 (202, 13)

* 44P/Reinmuth 2
In the Northern Hemisphere, it keeps 16 mag and 25 deg high until late August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  16  5.67  -26 39.2   1.784   2.573   131   16.4      5.4 324.6  20:31 (180, 82)  
July 22  16  4.79  -26 10.2   1.821   2.540   124   16.4      3.9 356.3  20:02 (180, 81)

* 95P/(2060) Chiron

 Image: 1999 June 12
It keeps over 30 deg high until end of August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  16 43.62  -16 48.1   9.366  10.150   138   16.4      2.5 272.9  21:08 (180, 72)  
July 22  16 42.52  -16 47.6   9.459  10.163   131   16.4      2.0 270.4  20:40 (180, 72)

* C/2000 K1 ( LINEAR )
It will be observable as 17 mag even in 2001 spring because it is very far. It is 14.5 mag visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  15 58.68   13 26.7   5.937   6.444   115   16.5      8.1 282.3  20:23 (180, 42)  
July 22  15 55.15   13 36.7   6.044   6.455   109   16.5      6.9 279.5  19:52 (180, 41)

* C/2000 K2 ( LINEAR )
It will be observable as 16.5-17 mag until late October. It is 14.5-15.0 mag visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  17  8.71   13 35.2   1.856   2.620   129   16.5      3.2 203.9  21:34 (180, 41)  
July 22  17  8.59   13  8.7   1.873   2.592   124   16.5      4.7 169.8  21:06 (180, 42)

* C/1999 N4 ( LINEAR )
It keeps 16.5 mag at good position until late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  16 13.30    5 19.8   4.898   5.518   123   16.6     15.1 262.1  20:38 (180, 50)  
July 22  16  6.67    5  3.5   5.002   5.522   115   16.7     13.6 259.1  20:04 (180, 50)

* 17P/Holmes
It has been already observed at this return, but no observations reported recently. It will be 17 mag at good position until November. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   2 10.43   27 24.5   2.281   2.218    73   17.0     25.9  50.9   5:36 (195, 26)  
July 22   2 20.82   29 17.8   2.221   2.230    77   17.0     24.8  49.7   5:33 (191, 25)

* 110P/Hartley 3
It will reach to 14 mag and locate overhead in December. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15   2 56.38   27 31.6   3.181   2.877    63   17.3     20.2  68.4   5:36 (206, 22)  
July 22   3  6.16   28 22.4   3.081   2.858    67   17.1     19.6  68.6   5:33 (202, 23)

* C/1999 K2 ( Ferris )

 Image: 1999 May 31
Fading gradually. It keeps 17-18 mag at good position until October. No observations reported since 1999 August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  19 56.73   39  9.0   5.696   6.255   119   17.2     11.4 293.9   0:25 (180, 16)  
July 22  19 50.40   39 36.9   5.712   6.282   120   17.3     11.0 287.9  23:47 (180, 15)

* 14P/Wolf
It has been already observed at this return, but no observations reported recently. It will be 17 mag at good position from August to December. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  22 43.70   24 44.6   1.969   2.575   115   17.6      6.1  28.6   3:12 (180, 30)  
July 22  22 44.70   25 16.4   1.890   2.559   120   17.5      3.8  14.7   2:45 (180, 30)

* C/1999 F2 ( Dalcanton )

 Image: 1999 June 30
It keeps the good condition until autumn. It will fade out gradually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 15  17  0.73   30 27.2   6.554   7.054   115   17.9      4.0 240.2  21:25 (180, 25)  
July 22  16 59.03   30 10.8   6.642   7.091   112   17.9      3.8 226.2  20:56 (180, 25)

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