Weekly Information about Bright Comets (1999 July 3: South)

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 Updated on July 7, 1999
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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 H1 ( Lee )

 Image: 1999 June 12
After rapid brightening, it suddenly stopped being brighter. Now it is not observable. It will appear at dawn as 6 mag in late July. After that, it will fade while being higher. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   8  5.51   25 19.2   1.621   0.728    18    6.7     31.4 333.6  18:29 (118, -5)  
July 10   7 57.82   28 26.8   1.676   0.709    11    6.7     29.8 329.2  18:32 (116,-14)

* C/1998 T1 ( LINEAR )

 Image: 1999 June 14
It is brightening rapidly since mid May. Moving over the southern sky drastically. It turns to be in the evening sky next week. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  19 10.01  -46 54.2   0.485   1.472   155    8.8    261.3 258.4   0:37 (  0, 78)  
July 10  16 29.64  -44 49.7   0.555   1.483   139    9.1    197.7 288.5  21:09 (  0, 81)

* 10P/Tempel 2

 Image: 1999 June 12
Brightening rapidly. It reached to 12.5 mag in early June. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  17  4.66   -9  3.1   0.660   1.629   151   11.0     17.3 208.8  22:19 (180, 64)  
July 10  17  1.45  -10 57.3   0.654   1.602   146   10.7     18.1 196.0  21:49 (180, 66)

* 37P/Forbes

 Image: 1999 June 14
It suddenly became 2 mag brighter in June. Now it reaches to 11 mag. The condition keeps good until September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   0 20.73    0 27.0   1.112   1.580    95   11.5     25.8  53.9   5:38 (180, 55)  
July 10   0 29.66    2  9.1   1.089   1.610    99   11.6     22.3  51.2   5:20 (180, 53)

* 4P/Faye

 Image: 1998 Dec. 13
Not observable. It will appear again in September as 13 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   5 39.76   18 26.4   2.708   1.755    16   12.1     39.9  90.9   5:38 (249, -3)  
July 10   5 59.18   18 16.9   2.715   1.779    18   12.2     39.1  92.8   5:37 (248, -1)

* C/1995 O1 ( Hale-Bopp )
Only southern people can observe it. Norhtern people can never see it again. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   6  9.55  -63 25.7   8.785   8.786    86   12.2      6.7 110.3   5:38 (328, 32)  
July 10   6 16.10  -63 44.0   8.837   8.839    86   12.2      6.8 115.3   5:37 (328, 34)

* C/1998 M5 ( LINEAR )

 Image: 1999 May 20
Very low in the evening sky. After conjunction, it will appear again at dawn in mid October as 14.5 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   9 31.55   20 37.6   3.362   2.640    38   12.8     22.0 144.8  18:29 (127, 14)  
July 10   9 37.82   18 34.9   3.490   2.702    33   13.0     21.2 143.4  18:32 (122, 11)

* C/1997 BA6 ( Spacewatch )

 Image: 1998 Dec. 5
Only southern people can observe it. It will appear again in 2000 August as 13 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   8 27.37  -46 16.7   3.863   3.696    72   13.0     12.2 116.9  18:29 ( 55, 36)  
July 10   8 35.02  -46 59.5   3.865   3.673    71   13.0     13.5 120.2  18:32 ( 52, 33)

* 29P/Schwassmann-Wachmann 1

 Image: 1999 June 12
Small outburst happened and it looked stellar as 14.5 mag on June 5. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  14 43.77  -26 38.7   5.510   6.155   125   13.6      2.5 325.6  19:59 (180, 82)  
July 10  14 43.30  -26 24.9   5.600   6.153   118   13.7      1.9 348.3  19:31 (180, 81)

* (3200) Phaethon

 Image: 1999 Feb. 6
Mother asteroid of Geminids. Although it appears at dawn, it will fade out rapidly. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   3 58.76   34 10.6   1.199   0.745    38   14.4     15.3  20.5   5:38 (223,  4)  
July 10   4  2.82   35 43.8   1.267   0.880    43   14.8     15.0  33.6   5:37 (218,  6)

* C/1999 H3 ( LINEAR )

 Image: 1999 June 14
Although it will be low in October and November, Northern people can observe it as 14 mag until 2000 April. Then they can trace it until July as the comet gets low at dusk as 16.5 mag. It is 13 mag visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  15 46.72   56 31.2   3.328   3.513    91   14.4     28.1 248.5  21:00 (180, -1)  
July 10  15 26.30   55  7.5   3.380   3.505    88   14.4     26.6 240.2  20:13 (180,  0)

* C/1997 J2 ( Meunier-Dupouy )

 Image: 1998 Dec. 13
Although it is highest now, the altitude is only 18 deg. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  23 29.20  -34  2.8   4.823   5.377   118   14.4     12.3 187.7   4:47 (180, 89)  
July 10  23 27.89  -35 29.4   4.790   5.426   124   14.4     12.9 193.2   4:18 (  0, 90)

* P/1998 U3 ( Jager )

 Image: 1999 May 12
Not observable. After appearing again at dawn in December, it will be lower than 20 deg in the Northern Hemisphere. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   9 43.94    2 21.5   2.952   2.388    47   14.6     29.2 114.1  18:29 (116, 29)  
July 10   9 56.37    0 57.3   3.033   2.417    44   14.7     29.2 114.5  18:32 (111, 26)

* 84P/Giclas
Not yet observed in this return. Now is the chance for the first observation. We can observe it as 14 mag from summer though winter under good condition. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   2 13.77    6 38.4   2.049   1.905    67   15.3     34.8  74.5   5:38 (218, 41)  
July 10   2 29.52    7 40.9   1.980   1.891    69   15.1     34.5  75.5   5:37 (214, 41)

* 102P/Shoemaker 1
Not yet observed in this return. We can observe it until November as 15-16 mag. But it should be much fainter than the ephemeris. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   3 28.90   37 18.7   2.776   2.171    44   15.3     31.1  62.5   5:38 (216,  6)  
July 10   3 45.13   38 55.6   2.750   2.194    47   15.3     30.3  63.5   5:37 (213,  5)

* 134P/Kowal-Vavrova

 Image: 1999 June 14
About 3 mag brighter than expected based on the pre-perihelion observations. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  18 40.70  -16 49.1   2.128   3.141   173   15.3      9.4 266.0  23:55 (180, 72)  
July 10  18 36.25  -16 54.6   2.166   3.171   169   15.5      8.8 264.2  23:23 (180, 72)

* C/1999 K8 ( LINEAR )

 Image: 1999 June 14
New comet. Because it is far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  21 41.59   37 40.3   4.700   5.085   106   15.4      3.3 343.5   3:00 (180, 17)  
July 10  21 40.76   37 59.1   4.620   5.069   110   15.4      2.9 319.4   2:31 (180, 17)

* C/1999 K6 ( LINEAR )

 Image: 1999 June 14
New comet. It will keep over 60 deg high until late November, when it will be 18 mag, so we can observe its fading out under good condition. It is 14.5 mag visually. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  18 41.19   30 43.5   1.509   2.264   126   15.4     23.5 333.6   0:00 (180, 24)  
July 10  18 35.50   32 57.2   1.526   2.257   123   15.5     19.9 329.4  23:22 (180, 22)

* C/1999 K5 ( LINEAR )

 Image: 1999 June 14
New comet. The perihelion passage is in 2000 July, when it will be 13.5 mag. But the comet is in the southern sky. Northern people can observe it until October as 15 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  19 13.67  -15  6.2   3.695   4.699   169   15.6     17.5 234.3   0:33 (180, 70)  
July 10  19  6.62  -16 19.1   3.644   4.656   173   15.5     18.2 234.4  23:53 (180, 71)

* C/1999 J2 ( Skiff )

 Image: 1999 June 14
New comet. Because it is extremely far away, it keeps 15 mag until late 2000, while Northern people can observe it under good condition. Visual observers reported it as 14 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  15 54.51   59 47.3   7.450   7.520    90   15.6     11.1 218.9  21:09 (180, -5)  
July 10  15 48.57   58 44.2   7.474   7.516    88   15.6     11.2 213.0  20:36 (180, -4)

* 50P/Arend
Not yet observed in this return. Now is the chance for the first observation. We can observe it as 15 mag from summer though winter under good condition. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   3  8.61   26 27.2   2.442   1.937    49   15.7     36.5  62.6   5:38 (219, 17)  
July 10   3 25.73   28 22.2   2.386   1.929    51   15.7     36.4  63.6   5:37 (216, 16)

* C/1999 J3 ( LINEAR )

 Image: 1999 June 12
New comet. It will close to the earth down to 0.4 AU in October and reach to 11 mag. In the Northern Hemisphere, people can observe it until mid November. But because the comet is moving southwards, it will just over the horizon after the approach to the earth. It will not be obesrvable after 2000 February. On the other hand, southern people cannot see it until the approach. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   9 53.71   71  8.1   2.081   1.714    55   15.9     21.3 212.2  18:29 (164,-22)  
July 10   9 39.96   69  2.8   2.066   1.640    51   15.7     19.7 206.9  18:32 (160,-23)

* P/1988 V1 ( Ge-Wang )
First return. Bright and now is the chance to recover. It is already observable in the Southern Hemisphere. Even in the Northern Hemisphere, the comet will be higher after this. It will be brightening slowly and reach to 15 mag in September. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   1 13.69    7 59.7   2.451   2.496    80   15.9     20.9  78.5   5:38 (199, 45)  
July 10   1 23.10    8 25.7   2.372   2.497    84   15.8     19.7  80.4   5:37 (193, 46)

* C/1999 F2 ( Dalcanton )

 Image: 1999 June 14
New comet. We can observe it until October when it fades to 17 mag and becomes low in the evening sky. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  15  0.11   13  3.3   4.823   5.317   113   16.0      1.5 316.3  20:15 (180, 42)  
July 10  14 59.88   13  8.5   4.938   5.342   108   16.0      0.4  13.3  19:48 (180, 42)

* 95P/(2060) Chiron

 Image: 1999 June 12
Stellar object. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  15 47.42  -15 43.9   8.750   9.522   137   16.1      2.5 281.0  21:03 (180, 71)  
July 10  15 46.39  -15 41.2   8.842   9.533   130   16.1      1.9 279.4  20:34 (180, 71)

* 106P/Schuster
Not yet observed in this return. Now is the chance for the first observation. It will keep around 25 deg high until October when it becomes 12.5 mag. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   0 18.27  -26 47.0   1.754   2.258   106   16.5     18.4  94.2   5:36 (180, 82)  
July 10   0 27.59  -26 59.4   1.648   2.213   110   16.3     17.4  97.5   5:18 (180, 82)

* C/1999 L2 ( LINEAR )
New comet. Northern people can observe it only until late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  16 12.75    2 16.1   1.090   1.945   134   16.6     42.7 195.6  21:27 (180, 53)  
July 10  16  8.21   -2 35.7   1.106   1.928   130   16.6     42.7 190.6  20:56 (180, 58)

* C/1999 A1 ( Tilbrook )

 Image: 1999 Jan. 16
Appearing to be in the morning sky. The brightness after late February is unknown. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  16  2.48  -37 31.2   1.743   2.621   142   16.6     31.4 329.2  21:17 (  0, 88)  
July 10  15 54.76  -34 35.3   1.896   2.710   134   16.9     25.7 334.8  20:42 (180, 89)

* C/1999 K2 ( Ferris )

 Image: 1999 May 31
New comet. It will be over 45 deg high and 17 mag until mid November. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  20 21.56   -2  4.7   4.345   5.241   148   16.9     14.8 298.9   1:40 (180, 57)  
July 10  20 15.33   -1 16.0   4.297   5.232   154   16.9     15.3 296.2   1:06 (180, 56)

* C/1998 U5 ( LINEAR )

 Image: 1999 June 4
Fading as expected. Observation is hard because it is in the Milky Way. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  17 24.64    8 38.5   2.046   2.919   142   16.9     40.1 244.5  22:38 (180, 47)  
July 10  17  8.83    6 37.3   2.163   2.994   137   17.1     35.4 241.0  21:55 (180, 49)

* P/1999 J5 ( LINEAR )
New comet. Although it keeps 18 mag until the end of 2000, it is higher than 40 deg only until late July. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  16 12.67   -9 33.6   2.874   3.718   140   17.5      6.3 239.2  21:28 (180, 65)  
July 10  16 10.47   -9 57.9   2.939   3.720   134   17.5      5.3 225.9  20:58 (180, 65)

* C/1998 M2 ( LINEAR )

 Image: 1999 Mar. 12
No observations reported since it appeared at dawn, except for Ageo Survey team's one on Mar. 12 (16.4 mag). 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3   1  6.05   62 36.3   4.499   4.215    67   17.5     11.9  37.6   5:38 (185, -8)  
July 10   1 13.02   63 41.0   4.498   4.265    70   17.6     11.0  34.2   5:37 (183, -9)

* C/1999 K3 ( LINEAR )

 Image: 1999 May 31
New comet. Although it is very high, fading out rapidly now. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  17  6.46   31 54.7   1.781   2.454   120   17.7     31.2 292.2  22:20 (180, 23)  
July 10  16 51.76   32 59.2   1.901   2.505   114   17.9     25.2 286.2  21:38 (180, 22)

* 1999 LD31
New retrograde asteroid. It will be overhead as 17 mag between 2000 January and March. 
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
July  3  15  9.04    4 54.7   2.118   2.771   120   17.7     38.2 277.4  20:23 (180, 50)  
July 10  14 52.58    5 22.5   2.213   2.735   110   17.8     32.5 275.4  19:39 (180, 50)

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Copyright(C) Seiichi Yoshida (comet@aerith.net). All rights reserved.