Weekly Information about Bright Comets (2000 July 22: North)

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 Updated on July 24, 2000
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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/1999 S4 ( LINEAR )

 Image: 2000 Feb. 12
Turns to be in the evening sky. Now it is about 6.5 mag. The brightening stopped in July. In the Northern Hemisphere, it keeps observable until early August. It becomes observable also in the Southern Hemisphere. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 22   9 42.88   56 17.6   0.374   0.769    40    6.7    399.5 130.5  20:50 (142, 21)  
July 29  11 49.30   22 19.3   0.462   0.767    45    7.2    259.3 155.0  20:43 (102, 19)

* 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 22   5 41.25  -36 22.1   2.627   2.405    66   11.4     36.6 103.6   3:21 (299,-23)  
July 29   6  2.53  -37 23.0   2.536   2.326    66   11.2     38.3 103.6   3:28 (301,-21)

* (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 22  19 47.88  -24 19.2   0.767   1.780   174   12.2     27.2 280.6  23:44 (  0, 31)  
July 29  19 34.69  -23 40.5   0.782   1.782   165   12.5     25.3 283.5  23:03 (  0, 31)

* 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 22  21 55.63  -49 34.2   3.201   4.063   143   13.1     17.4 279.5   1:57 (  0,  5)  
July 29  21 43.14  -49  8.1   3.211   4.096   146   13.2     18.2 284.3   1:17 (  0,  6)

* 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 22   5  2.77   30  6.7   1.632   1.117    42   14.1     66.9  83.6   3:21 (247, 20)  
July 29   5 41.40   30 38.5   1.524   1.004    40   13.2     76.4  88.4   3:28 (246, 20)

* 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 22  20 31.42  -37 38.3   1.600   2.585   161   13.5     10.9 263.7   0:32 (  0, 17)  
July 29  20 24.87  -37 41.7   1.583   2.565   160   13.4     11.2 271.3  23:54 (  0, 17)

* 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 22  16 38.97  -30 47.9   5.310   6.042   132   13.5      3.4 305.4  20:50 (  3, 24)  
July 29  16 37.76  -30 34.4   5.392   6.040   125   13.5      2.5 318.2  20:43 (  8, 24)

* 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 22   6 26.54  -74  4.3   2.998   3.260    95   13.5     21.0  71.7   3:21 (341,-38)  
July 29   6 57.55  -73 15.7   3.043   3.264    93   13.6     18.9  68.8   3:28 (339,-38)

* 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 22   1 44.40   11 49.5   4.125   4.266    91   13.9      9.1 125.0   3:21 (297, 50)  
July 29   1 47.65   11  9.9   4.029   4.276    97   13.8      8.7 134.5   3:28 (306, 55)

* 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 22   6 15.05  -70 27.0  11.452  11.546    92   13.9      5.3 124.4   3:21 (336,-37)  
July 29   6 21.04  -70 49.3  11.505  11.593    92   13.9      5.3 129.4   3:28 (337,-35)

* 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 22  20  7.21   63 49.5   3.013   3.278    95   14.1     33.6 275.7   0:10 (180, 61)  
July 29  19 31.32   63 46.5   2.976   3.253    96   14.0     34.2 264.0  22:58 (180, 61)

* 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 22   3 31.69   49 21.5   4.270   3.882    61   15.0      1.5   9.3   3:21 (232, 43)  
July 29   3 31.35   49 32.4   4.130   3.843    66   14.9      2.0 322.4   3:28 (232, 49)

* 2000 NM
New near-earth asteroid. It will be brighter than 16 mag until late July. It is now 1 mag brighter than this ephemeris. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 22  17  3.79   58 50.3   0.169   1.037    92   15.2    163.2 343.3  20:58 (180, 65)  
July 29  16  3.13   72 54.0   0.212   0.995    78   16.1    103.4 330.3  20:43 (172, 50)

* 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 22  15 15.37   30  9.9   7.004   7.143    93   15.3     10.3 200.5  20:50 ( 83, 69)  
July 29  15 13.71   29  1.7   7.090   7.148    89   15.3     10.2 194.8  20:43 ( 85, 64)

* (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 22   3  2.21   -7 19.6   1.972   2.050    79   15.5     29.5  92.5   3:21 (298, 23)  
July 29   3 15.84   -7 32.1   1.908   2.044    82   15.4     28.5  94.6   3:28 (302, 27)

* 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 22  21 57.98  -13  4.2   0.276   1.267   152   15.6     47.4  41.2   1:58 (  0, 42)  
July 29  22 12.53   -8 40.7   0.257   1.252   154   15.4     49.3  37.3   1:45 (  0, 46)

* 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 22   3 19.50   17 13.0   2.159   2.004    67   16.2     31.9  66.8   3:21 (272, 34)  
July 29   3 33.80   18 39.1   2.091   1.997    70   16.1     31.3  67.2   3:28 (274, 39)

* 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 22   0 43.28  -10 40.6   1.778   2.368   113   16.1      4.8 137.0   3:21 (333, 40)  
July 29   0 44.11  -11  8.9   1.742   2.410   119   16.3      4.6 177.3   3:28 (344, 42)

* 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 22   1 16.78   15 22.5   2.257   2.569    95   16.4     15.8  59.5   3:21 (300, 57)  
July 29   1 23.10   16 17.2   2.137   2.532   100   16.2     14.6  58.5   3:28 (308, 63)

* 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 22   3 22.45   38 10.8   6.448   6.056    63   16.4      9.9  37.6   3:21 (247, 42)  
July 29   3 25.86   39  6.2   6.323   6.026    68   16.3      9.6  33.8   3:28 (248, 48)

* 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 22  16  4.79  -26 10.2   1.821   2.540   124   16.4      3.9 356.3  20:50 ( 12, 28)  
July 29  16  5.41  -25 44.9   1.864   2.507   118   16.3      4.2  38.6  20:43 ( 17, 27)

* 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 22  16 42.52  -16 47.6   9.459  10.163   131   16.4      2.0 270.4  20:50 (  3, 38)  
July 29  16 41.71  -16 47.9   9.561  10.175   124   16.5      1.4 265.8  20:43 ( 10, 38)

* 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 22  17  8.59   13  8.7   1.873   2.592   124   16.5      4.7 169.8  21:06 (  0, 68)  
July 29  17  9.54   12 31.1   1.896   2.567   120   16.5      6.9 152.5  20:43 (  2, 67)

* 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 22  15 55.15   13 36.7   6.044   6.455   109   16.5      6.9 279.5  20:50 ( 35, 65)  
July 29  15 52.18   13 42.8   6.156   6.467   103   16.6      5.6 276.3  20:43 ( 46, 62)

* 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 22  16  6.67    5  3.5   5.002   5.522   115   16.7     13.6 259.1  20:50 ( 23, 58)  
July 29  16  0.84    4 44.1   5.115   5.526   108   16.7     12.0 255.7  20:43 ( 33, 55)

* 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 22   2 20.82   29 17.8   2.221   2.230    77   17.0     24.8  49.7   3:21 (266, 52)  
July 29   2 30.71   31  8.8   2.162   2.243    81   16.9     23.6  48.2   3:28 (266, 58)

* 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 22   3  6.16   28 22.4   3.081   2.858    67   17.1     19.6  68.6   3:21 (262, 42)  
July 29   3 15.70   29 11.1   2.980   2.840    72   17.0     18.8  68.8   3:28 (263, 48)

* 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 22  19 50.40   39 36.9   5.712   6.282   120   17.3     11.0 287.9  23:47 (180, 85)  
July 29  19 44.10   39 56.1   5.736   6.308   120   17.3     10.5 281.8  23:13 (180, 85)

* 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 22  22 44.70   25 16.4   1.890   2.559   120   17.5      3.8  14.7   2:45 (  0, 80)  
July 29  22 44.69   25 35.3   1.816   2.543   125   17.3      2.0 329.7   2:18 (  0, 81)

* 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 22  16 59.03   30 10.8   6.642   7.091   112   17.9      3.8 226.2  20:56 (  0, 85)  
July 29  16 57.76   29 50.4   6.736   7.128   108   18.0      3.7 211.4  20:43 ( 33, 84)

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