Weekly Information about Bright Comets (2000 July 29: North)

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 Updated on August 2, 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
After the small outburst around July 22, it is fading drastically. It was 6.6 mag on 26, but 8.4 mag on 31 by Nagai. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29  11 49.30   22 19.3   0.462   0.767    45    8.6    259.3 155.0  20:43 (102, 19)  
Aug.  5  12 21.62    3 20.1   0.683   0.789    50    9.6    114.0 160.1  20:34 ( 85, 12)

* 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 is a bit fainter than this ephemeris recently. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29   6  2.53  -37 23.0   2.536   2.326    66   11.2     38.3 103.6   3:28 (301,-21)  
Aug.  5   6 25.06  -38 25.5   2.452   2.247    66   11.0     39.9 103.2   3:36 (304,-20)

* 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 29   5 41.40   30 38.5   1.524   1.004    40   13.2     76.4  88.4   3:28 (246, 20)  
Aug.  5   6 25.67   30 21.9   1.431   0.886    37   12.3     87.3  94.1   3:36 (245, 18)

* (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 29  19 34.69  -23 40.5   0.782   1.782   165   12.5     25.3 283.5  23:03 (  0, 31)  
Aug.  5  19 23.15  -22 56.7   0.807   1.783   156   12.7     21.6 287.4  22:24 (  0, 32)

* C/1997 BA6 ( Spacewatch )

 Image: 1998 Dec. 5
It is extremely low 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 29  21 43.14  -49  8.1   3.211   4.096   146   13.2     18.2 284.3   1:17 (  0,  6)  
Aug.  5  21 30.64  -48 30.3   3.236   4.131   147   13.3     18.6 289.4   0:37 (  0,  6)

* 47P/Ashbrook-Jackson
It will be 13-14 mag from August to November. But the altitude keeps lower than 20 deg until late August. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29  20 24.87  -37 41.7   1.583   2.565   160   13.4     11.2 271.3  23:54 (  0, 17)  
Aug.  5  20 18.33  -37 34.3   1.578   2.544   157   13.3     11.0 279.6  23:20 (  0, 17)

* 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 29  19 31.32   63 46.5   2.976   3.253    96   13.5     34.2 264.0  22:58 (180, 61)  
Aug.  5  18 56.45   62 55.0   2.953   3.229    96   13.4     34.3 252.4  21:56 (180, 62)

* 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 29  16 37.76  -30 34.4   5.392   6.040   125   13.5      2.5 318.2  20:43 (  8, 24)  
Aug.  5  16 37.15  -30 21.6   5.483   6.038   118   13.6      1.9 342.1  20:34 ( 13, 23)

* C/1999 K5 ( LINEAR )

 Image: 1999 July 31
It is only observable in the Southern Hemisphere until the end of 2001. Recently it is brighter than this ephemeris, around 13.0 mag 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29   6 57.55  -73 15.7   3.043   3.264    93   13.6     18.9  68.8   3:28 (339,-38)  
Aug.  5   7 23.62  -72 28.1   3.092   3.269    90   13.6     16.7  67.4   3:36 (338,-37)

* C/1999 K8 ( LINEAR )

 Image: 1999 Dec. 30
Because it is far away, it keeps 14 mag until late 2000. Very diffused. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29   1 47.65   11  9.9   4.029   4.276    97   13.8      8.7 134.5   3:28 (306, 55)  
Aug.  5   1 50.28   10 24.0   3.935   4.288   103   13.8      8.5 145.3   3:36 (319, 60)

* 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 29   6 21.04  -70 49.3  11.505  11.593    92   13.9      5.3 129.4   3:28 (337,-35)  
Aug.  5   6 26.78  -71 14.3  11.560  11.640    92   14.0      5.4 134.4   3:36 (338,-33)

* 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 29   3 31.35   49 32.4   4.130   3.843    66   14.9      2.0 322.4   3:28 (232, 49)  
Aug.  5   3 29.85   49 43.7   3.983   3.805    72   14.8      3.4 298.4   3:36 (232, 54)

* 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 29  22 12.53   -8 40.7   0.257   1.252   154   15.4     49.3  37.3   1:45 (  0, 46)  
Aug.  5  22 26.08   -3 59.1   0.245   1.242   155   15.2     49.3  34.2   1:31 (  0, 51)

* 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 29  15 13.71   29  1.7   7.090   7.148    89   15.3     10.2 194.8  20:43 ( 85, 64)  
Aug.  5  15 12.60   27 52.6   7.177   7.153    84   15.3     10.0 189.2  20:34 ( 86, 60)

* (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 29   3 15.84   -7 32.1   1.908   2.044    82   15.4     28.5  94.6   3:28 (302, 27)  
Aug.  5   3 28.96   -7 51.7   1.847   2.040    85   15.4     27.5  97.0   3:36 (307, 30)

* C/2000 K2 ( LINEAR )
It will be observable as 16 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 29  17  9.54   12 31.1   1.896   2.567   120   16.0      6.9 152.5  20:43 (  2, 67)  
Aug.  5  17 11.64   11 44.0   1.924   2.543   116   16.0      9.3 142.3  20:34 ( 12, 66)

* 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 29   1 23.10   16 17.2   2.137   2.532   100   16.2     14.6  58.5   3:28 (308, 63)  
Aug.  5   1 28.81   17  8.8   2.020   2.496   105   16.0     13.1  57.0   3:36 (321, 68)

* 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 29   3 33.80   18 39.1   2.091   1.997    70   16.1     31.3  67.2   3:28 (274, 39)  
Aug.  5   3 47.96   20  2.2   2.024   1.992    73   16.0     30.6  67.6   3:36 (276, 44)

* 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 29  15 52.18   13 42.8   6.156   6.467   103   16.1      5.6 276.3  20:43 ( 46, 62)  
Aug.  5  15 49.79   13 45.5   6.272   6.478    97   16.1      4.4 272.4  20:34 ( 54, 59)

* 2000 NM
New near-earth asteroid. 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 29  16  3.13   72 54.0   0.212   0.995    78   16.1    103.4 330.3  20:43 (172, 50)  
Aug.  5  13 59.02   79 56.5   0.262   0.960    70   16.7     69.9 300.2  20:34 (169, 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 29   3 25.86   39  6.2   6.323   6.026    68   16.3      9.6  33.8   3:28 (248, 48)  
Aug.  5   3 28.87   40  2.7   6.195   5.996    74   16.2      9.3  29.4   3:36 (248, 55)

* 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 29  16  5.41  -25 44.9   1.864   2.507   118   16.3      4.2  38.6  20:43 ( 17, 27)  
Aug.  5  16  7.52  -25 23.9   1.912   2.474   111   16.3      6.1  63.9  20:34 ( 21, 26)

* 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 29  16 41.71  -16 47.9   9.561  10.175   124   16.5      1.4 265.8  20:43 ( 10, 38)  
Aug.  5  16 41.19  -16 49.0   9.671  10.187   118   16.5      0.8 254.1  20:34 ( 15, 37)

* C/1999 N4 ( LINEAR )
It is observable around 17.0 mag until September when it becomes low. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29  16  0.84    4 44.1   5.115   5.526   108   16.7     12.0 255.7  20:43 ( 33, 55)  
Aug.  5  15 55.81    4 22.2   5.236   5.531   101   16.8     10.4 251.7  20:34 ( 42, 52)

* 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 29   3 15.70   29 11.1   2.980   2.840    72   17.0     18.8  68.8   3:28 (263, 48)  
Aug.  5   3 24.93   29 57.5   2.877   2.821    76   16.8     18.0  68.9   3:36 (265, 53)

* 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 29   2 30.71   31  8.8   2.162   2.243    81   16.9     23.6  48.2   3:28 (266, 58)  
Aug.  5   2 39.99   32 57.4   2.103   2.257    85   16.9     22.2  46.3   3:36 (265, 63)

* 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 29  22 44.69   25 35.3   1.816   2.543   125   17.3      2.0 329.7   2:18 (  0, 81)  
Aug.  5  22 43.70   25 39.3   1.748   2.529   130   17.2      2.9 258.1   1:49 (  0, 81)

* 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 29  19 44.10   39 56.1   5.736   6.308   120   17.3     10.5 281.8  23:13 (180, 85)  
Aug.  5  19 37.96   40  6.8   5.771   6.335   119   17.3      9.9 275.6  22:39 (180, 85)

* 9P/Tempel 1
After perihelion passage, only one observation was reported, it was 17.1 mag on May 11. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July 29   0 44.11  -11  8.9   1.742   2.410   119   17.4      4.6 177.3   3:28 (344, 42)  
Aug.  5   0 43.48  -11 44.5   1.712   2.451   126   17.5      6.2 207.5   3:36 (356, 43)

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