Weekly Information about Bright Comets (2000 June 17: North)

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 Updated on June 18, 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
Now it is about 9.5 mag. It will be 5 mag in 2000 July. In the Northern Hemisphere, it keeps observable until early August. In the Southern Hemisphere, it locates very low between late May and mid June, however, it locates high after late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17   2 16.67   36 28.8   1.484   1.068    46    9.4     23.3  26.5   2:58 (241, 24)  
June 24   2 24.08   39 21.8   1.244   0.983    50    8.7     33.1  27.4   3:00 (240, 29)

* 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)  
June 17   4 12.09  -32 28.5   3.163   2.796    59   12.5     28.0  99.3   2:58 (288,-35)  
June 24   4 27.85  -33  2.9   3.048   2.718    61   12.3     29.7 100.6   3:00 (290,-33)

* (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)  
June 17  20 45.08  -25 56.0   0.860   1.756   138   13.1     11.9 278.2   2:58 (359, 29)  
June 24  20 37.61  -25 44.3   0.822   1.763   146   12.9     17.1 275.6   2:29 (  0, 29)

* 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)  
June 17  22 44.59  -49 40.5   3.339   3.905   116   13.0      8.9 262.3   2:58 (340,  1)  
June 24  22 37.46  -49 48.5   3.291   3.936   122   13.0     11.0 264.4   3:00 (346,  3)

* 29P/Schwassmann-Wachmann 1

 Image: 1999 June 12
The altitude will be 23 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)  
June 17  16 52.42  -31 52.7   5.062   6.053   165   13.4      6.7 283.1  23:07 (  0, 23)  
June 24  16 48.97  -31 41.4   5.087   6.051   159   13.4      6.3 285.7  22:36 (  0, 23)

* 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)  
June 17   2 36.88  -74 43.3   2.885   3.260   102   13.4     29.3 106.9   2:58 (342,-33)  
June 24   3 27.92  -75 24.8   2.888   3.257   102   13.4     28.1  98.5   3:00 (342,-35)

* 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 17   5 42.76  -69 19.9  11.215  11.309    92   13.8      5.1  98.9   2:58 (338,-48)  
June 24   5 49.37  -69 27.0  11.259  11.356    92   13.8      5.1 104.2   3:00 (337,-46)

* C/1999 T2 ( LINEAR )

 Image: 2000 Jan. 8
It will be 13 mag at good position in 2000 September. It was reported as 13 mag visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  22 10.93   55 16.0   3.390   3.419    83   14.0     26.3 322.3   2:58 (211, 64)  
June 24  21 55.70   57 38.3   3.294   3.388    86   13.9     28.0 315.0   3:00 (196, 66)

* 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)  
June 17   1 20.21   13 45.0   4.596   4.225    62   14.1     12.5  97.4   2:58 (270, 24)  
June 24   1 25.97   13 31.7   4.506   4.231    67   14.0     11.8 100.8   3:00 (273, 29)

* 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 16 mag on May 3. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  20 51.16  -35 44.3   1.856   2.696   137   14.3      4.2 196.8   2:58 (358, 19)  
June 24  20 49.75  -36 12.7   1.784   2.673   143   14.1      5.5 222.0   2:41 (  0, 19)

* 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)  
June 17  15 32.12   35 12.7   6.656   7.125   113   15.1     10.9 228.8  21:47 (180, 90)  
June 24  15 27.68   34 19.9   6.712   7.128   110   15.2     10.8 223.2  21:15 (  0, 89)

* 9P/Tempel 1
Low in the morning sky. It was fainter than 14.5 mag on May 15 by Biver. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17   0 19.32  -10 22.1   1.981   2.162    85   15.4     16.4  81.6   2:58 (300, 21)  
June 24   0 26.51  -10  9.2   1.941   2.203    90   15.5     14.1  84.8   3:00 (305, 25)

* 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)  
June 17   3 21.39   48 50.2   4.839   4.083    37   15.5      4.9  88.7   2:58 (223, 20)  
June 24   3 24.64   48 52.2   4.746   4.042    41   15.4      4.3  83.7   3:00 (226, 23)

* 2000 GK137
New near-earth astedoid. 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)  
June 17  18 23.16   43 27.2   0.207   1.112   112   15.6     83.5  33.0   0:40 (180, 82)  
June 24  19  1.48   51 47.2   0.185   1.076   104   15.5     97.2  41.6   0:50 (180, 74)

* C/1999 H3 ( LINEAR )

 Image: 2000 Feb. 17
It will fade out gradually after this, but it can be observed as 17.5 mag in 2001 spring. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  10 41.68   29 18.0   4.756   4.442    66   15.9     10.8 186.5  21:03 (102, 38)  
June 24  10 41.37   28  4.0   4.900   4.479    60   16.0     10.4 179.8  21:04 (104, 32)

* C/2000 CT54 ( LINEAR )
It will be 13.5 mag in 2001 July, however, it will not be obesrvable after July in the Northern Hemisphere. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  12 52.71  -27 21.2   4.126   4.651   115   16.3      3.3 258.7  21:03 ( 27, 22)  
June 24  12 51.43  -27 27.0   4.178   4.607   108   16.2      2.0 238.6  21:04 ( 34, 19)

* C/2000 K1 ( LINEAR )
New comet. Although it will be fading after this, it is 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)  
June 17  16 17.82   11 56.8   5.602   6.403   138   16.3     12.7 292.5  22:32 (  0, 67)  
June 24  16 12.40   12 27.7   5.669   6.413   133   16.3     11.7 290.0  22:00 (  0, 67)

* 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)  
June 17  16 50.19  -16 57.7   9.112  10.101   166   16.3      4.0 277.6  23:05 (  0, 38)  
June 24  16 48.29  -16 54.2   9.156  10.113   159   16.3      3.8 276.8  22:36 (  0, 38)

* 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)  
June 17  16 46.60    5 40.9   4.621   5.508   147   16.5     19.9 272.2  23:01 (  0, 61)  
June 24  16 37.47    5 43.3   4.665   5.509   142   16.5     19.0 269.9  22:24 (  0, 61)

* 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)  
June 17  16 22.70  -28 51.9   1.725   2.707   161   16.7     12.7 290.6  22:37 (  0, 26)  
June 24  16 16.76  -28 19.2   1.724   2.673   153   16.6     11.5 294.8  22:04 (  0, 27)

* C/2000 K2 ( LINEAR )
New comet. 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)  
June 17  17 16.92   13  5.9   1.866   2.746   142   16.7      7.9 310.4  23:32 (  0, 68)  
June 24  17 14.12   13 34.8   1.851   2.712   140   16.7      6.4 299.1  23:01 (  0, 69)

* 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)  
June 17   0 38.98   10 18.5   2.867   2.751    73   17.2     19.7  62.2   2:58 (279, 31)  
June 24   0 47.15   11 22.3   2.745   2.715    77   17.0     19.2  61.9   3:00 (282, 35)

* 71P/Clark
It is not observable around the perihelion passage. In July when it will be lower than 20 deg, it reaches only to 16.5 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  10 59.36   14 29.5   2.219   2.179    74   17.2     20.2 124.7  21:03 ( 83, 35)  
June 24  11  7.77   13  6.5   2.258   2.141    70   17.0     22.0 123.5  21:04 ( 85, 30)

* 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)  
June 17   1 25.50   19 31.5   2.514   2.183    59   17.1     29.4  53.6   2:58 (264, 26)  
June 24   1 37.13   21 32.4   2.457   2.190    62   17.1     28.7  53.1   3:00 (264, 31)

* 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)  
June 17  20 19.47   35 54.3   5.728   6.152   110   17.2     12.3 317.6   2:38 (180, 89)  
June 24  20 14.41   36 54.4   5.707   6.178   113   17.2     12.2 311.7   2:05 (180, 88)

* 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)  
June 17  17 10.87   30 39.6   6.269   6.907   125   17.7      5.7 283.4  23:26 (  0, 86)  
June 24  17  7.96   30 45.5   6.328   6.944   123   17.7      5.2 274.2  22:55 (  0, 86)

* P/2000 G1 ( LINEAR )
New comet with a period of 5.4 years. It must be 12 mag and moving fast in March, when it was 0.1 AU from the earth. Although it was fading out rapidly in April, reported as 16.8 mag in Apr. 23, it was bright as 15.5 mag in May. It was reported as faint as 17 mag after mid May. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
June 17  17  1.13    2 14.1   0.659   1.629   152   17.9     15.0 226.5  23:16 (  0, 57)  
June 24  16 56.91    0 58.5   0.735   1.691   149   18.3     13.3 212.7  22:44 (  0, 56)

* 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)  
June 17  22 30.29   21  7.2   2.321   2.647    97   18.1     13.9  46.4   2:58 (293, 62)  
June 24  22 34.94   22 11.8   2.229   2.628   101   17.9     12.2  43.6   3:00 (299, 67)

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