Weekly Information about Bright Comets (2002 May 25: North)

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Updated on June 4, 2002
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere.

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* C/2002 C1 ( Ikeya-Zhang )


It is fading, but the pace is slow. Now that it is close to the earth, it has a large coma with no tail.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  16  0.34   26 40.0   0.577   1.466   132    6.6     80.7 209.7  23:46 (  0, 81)  
June  1  15 43.66   19 17.6   0.677   1.577   136    7.2     62.5 205.3  23:03 (  0, 74)  

* C/2002 F1 ( Utsunomiya )


It faded to 7.5 mag in mid May, but it was still strongly condensed. Northern people cannot see it again. In the Southern Hemisphere, it will be observable in May and June, but it only locates very low in the evening sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   5 40.32    5  4.8   1.642   0.882    27   10.0     62.9 133.3  20:45 (105,-12)  
June  1   6  0.20    0 22.2   1.751   1.010    30   10.8     54.8 133.6  20:52 (103,-18)  

* C/2000 WM1 ( LINEAR )


It suddenly bursted out in late January and reached to 2.5 mag. Then it had been fading rapidly down to 9.5 mag. But the fading became slower in April.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  17 32.81   33 56.2   1.586   2.284   121   11.6     33.5 296.0   1:25 (  0, 89)  
June  1  17 16.24   35 18.0   1.685   2.381   121   11.9     29.5 287.7   0:41 (180, 90)  

* C/2002 E2 ( Snyder-Murakami )


It seems fading rapidly. It keeps observable until it fades out in the Northern Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  18 36.06   75 41.9   1.830   1.943    80   12.1     36.3 332.4   2:28 (180, 49)  
June  1  17 54.93   78 53.8   1.944   2.005    78   12.5     30.8 318.2   1:21 (180, 46)  

* C/2000 SV74 ( LINEAR )


It will be observable at 13 mag until September. It is fainter than 14 mag by CCD.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   2 28.79   79 24.7   3.955   3.551    59   12.9     23.7  40.1   3:08 (192, 31)  
June  1   3 16.28   81 23.9   3.953   3.555    59   12.9     24.2  48.2   3:03 (189, 31)  

* C/2002 H2 ( LINEAR )


New comet. Although it will be observable all after this in the Northern Hemisphere, it will be fainter gradually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  17 16.95   65  2.7   1.478   1.835    93   13.0     62.9 307.3   1:11 (180, 60)  
June  1  16 16.33   68 14.0   1.586   1.878    89   13.2     53.3 290.1  23:31 (180, 57)  

* 29P/Schwassmann-Wachmann 1


It is in outburst, 13.5 mag on May 8.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  21 10.54  -17 39.6   5.428   5.834   108   13.4      1.2  47.6   3:08 (328, 31)  
June  1  21 10.71  -17 34.9   5.324   5.832   115   13.4      0.6 336.9   3:03 (334, 33)  

* 6P/d'Arrest


The condition in this return is bad. It is not observable until June in the Southern Hemisphere, until August in the Northern Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   2 46.90    3 15.1   2.672   1.819    26   13.4     36.0  78.8   3:08 (254,-16)  
June  1   3  3.12    4  0.7   2.693   1.867    28   13.8     34.6  79.9   3:03 (255,-14)  

* C/2001 OG108 ( LONEOS )


It is fading rapidly since mid April. It is moving fast towards south and will be low in the evening sky in mid June. It was 12 mag in mid May visually, but 16 mag by CCD, so there is a large difference.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   9 49.32    1 16.4   1.185   1.498    85   13.5     45.0 164.9  20:45 ( 62, 35)  
June  1   9 54.88   -3 13.9   1.356   1.576    81   14.1     36.5 160.6  20:52 ( 64, 26)  

* 7P/Pons-Winnecke


It is at the peak now, but only 13-14 mag visually.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  21 56.27  -12 59.9   0.643   1.263    96   13.6     59.2 112.2   3:08 (315, 29)  
June  1  22 22.12  -15 39.7   0.633   1.274    98   13.6     57.2 114.2   3:03 (316, 27)  

* C/2001 N2 ( LINEAR )


The brightening seems slow, so it reaches only up to 14 mag in June and July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  19 35.02   21 37.2   2.254   2.818   113   14.1     33.9 276.0   3:08 (342, 76)  
June  1  19 16.55   21 53.1   2.134   2.795   121   14.0     39.8 271.4   2:41 (  0, 77)  

* C/2001 K5 ( LINEAR )


It will be observable at around 14.5 mag in good position until 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)  
May  25  16 49.29   13 28.9   4.433   5.287   144   14.2     13.3 318.1   0:41 (  0, 68)  
June  1  16 44.96   14 34.9   4.428   5.276   143   14.2     12.8 314.6   0:09 (  0, 70)  

* 28P/Neujmin 1


Stellar object. It will reach to 13 mag at the end of this year. In the northern hemisphere, it keeps low in the south after this.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  15 26.38  -40 24.7   1.883   2.850   158   14.8     13.3 274.0  23:13 (  0, 15)  
June  1  15 18.28  -40 12.9   1.839   2.794   155   14.7     13.3 280.4  22:38 (  0, 15)  

* 22P/Kopff


The condition in this return is bad. We can observe it only until August before perihelion passage when it becomes to 13 mag in the evening sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  11 34.22    8 57.8   1.939   2.434   106   14.9      4.9 131.0  20:45 ( 41, 58)  
June  1  11 36.59    8 31.3   1.984   2.392   100   14.7      7.7 124.6  20:52 ( 51, 53)  

* 116P/Wild 4


It will be 10.5 mag in 2003 spring. It was fainter than this ephemeris, around 16 mag recently.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   7  8.97   25 22.8   3.378   2.712    42   15.0     22.6  98.2  20:45 (110, 17)  
June  1   7 20.70   24 58.1   3.412   2.687    38   14.9     23.4  99.2  20:52 (112, 12)  

* 67P/Churyumov-Gerasimenko


Not yet observed in this return. Appearing at dawn. It will reach to 13.5 mag between July and October.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   1 34.68    5 38.5   2.272   1.628    39   15.2     45.1  66.4   3:08 (263,  0)  
June  1   1 54.48    7 45.2   2.199   1.582    41   15.0     46.6  67.0   3:03 (262,  2)  

* 65P/Gunn


It will be observable at 15 mag until August when it becomes low in the evening sky. It is brighter than this ephemeris recently, 14.5 mag even by CCD.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  11  2.92   17 41.5   2.884   3.160    96   15.1      8.3 139.8  20:45 ( 63, 59)  
June  1  11  5.97   16 54.9   2.959   3.138    90   15.1      9.9 134.4  20:52 ( 70, 53)  

* 46P/Wirtanen


Not yet observed in this return. Appearing at dawn. It is getting brighter rapidly now. It will be 10 mag in August in the morning low sky.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   1 37.06    1  4.2   2.201   1.590    41   15.7     46.0  68.2   3:08 (266, -3)  
June  1   1 57.49    3  5.4   2.116   1.532    42   15.1     48.2  68.6   3:03 (265, -2)  

* C/1999 U4 ( Catalina-Skiff )


It is observable until autumn at 15 mag. It was reported as 14 mag visually, but as 16 mag by CCD, so there is a large difference.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  10 16.12   62 45.4   5.386   5.175    72   15.3     13.8 155.5  20:45 (151, 53)  
June  1  10 22.17   61 17.4   5.462   5.192    69   15.3     14.1 152.8  20:52 (146, 50)  

* C/2001 RX14 ( LINEAR )


Appearing at dawn. It will be observable at 10 mag in the good condition for a long time from winter to next spring.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   3 16.46   34 38.7   4.354   3.403    17   15.5     21.3  66.0   3:08 (226,  0)  
June  1   3 27.73   35 39.2   4.280   3.345    20   15.4     21.8  66.4   3:03 (227,  2)  

* C/2001 HT50 ( LINEAR-NEAT )


It will be 12 mag in 2003 February.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25   9 42.66   -2  5.5   4.824   4.846    85   15.5      6.5 313.7  20:45 ( 61, 31)  
June  1   9 40.79   -1 36.1   4.901   4.796    78   15.4      5.1 319.5  20:52 ( 69, 25)  

* 77P/Longmore


Now it is at the peak. It became brighter than expected.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  10 39.07   16 30.2   2.161   2.410    91   15.7     18.2 147.3  20:45 ( 68, 54)  
June  1  10 44.29   14 42.5   2.232   2.397    86   15.7     19.4 142.9  20:52 ( 72, 47)  

* 74P/Smirnova-Chernykh


It keeps brighter than 17 mag until August.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  15 32.40  -15 55.8   2.900   3.903   170   16.1      9.5 275.9  23:20 (  0, 39)  
June  1  15 27.98  -15 49.6   2.930   3.911   163   16.2      8.8 275.0  22:48 (  0, 39)  

* 19P/Borrelly


Fading now. It is observable in good condition until to fade out.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  11 35.86   38 19.1   2.587   2.832    93   16.2     16.9 159.7  20:45 (107, 74)  
June  1  11 39.72   36 29.0   2.710   2.879    89   16.5     17.2 155.0  20:52 (102, 67)  

* 57P/du Toit-Neujmin-Delporte


Not yet observed in this return. It is getting brighter in the morning sky. It will reach to 15.5 mag in July and August. It bursted out and became 6 mag brighter than this ephemeris in the previous return in 1996.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  19 47.28  -16  4.3   1.032   1.835   127   16.5     15.6  69.7   3:08 (351, 38)  
June  1  19 53.78  -15 27.4   0.968   1.815   132   16.3     13.1  67.3   3:03 (356, 39)  

* C/2002 J4 ( NEAT )


New comet. It will reach to 14 mag in the southern sky in 2003 summer.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  15 42.77    0  2.1   4.644   5.598   158   16.8      9.3 253.9  23:30 (  0, 55)  
June  1  15 38.61   -0 18.0   4.623   5.555   154   16.8      9.4 250.4  22:58 (  0, 55)  

* 95P/(2060) Chiron


It keeps 17 mag locating at the same altitude until October in the Northerm Hemisphere.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  18 33.94  -16 21.6  10.584  11.427   144   17.1      2.9 275.4   2:25 (  0, 39)  
June  1  18 32.45  -16 20.0  10.537  11.440   151   17.1      3.3 273.4   1:56 (  0, 39)  

* C/2002 K1 ( NEAT )


New comet. It keeps 17 mag until July.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  19 47.12  -22 23.2   2.518   3.252   128   17.1     22.9 311.5   3:08 (352, 32)  
June  1  19 37.78  -20 33.5   2.437   3.258   137   17.1     25.8 308.8   3:02 (  0, 34)  

* 2001 TX16


Asteroid with a cometary orbit of 6.8 year period. Fading now.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  11 22.36   13 29.0   1.479   1.963   102   17.3     26.2 127.3  20:45 ( 50, 60)  
June  1  11 32.39   11 39.3   1.588   2.008    98   17.5     26.2 126.2  20:52 ( 56, 54)  

* C/2002 J5 ( LINEAR )


New comet. It is a far object. It will be 17 mag all through in 2003 and 2004.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  20 11.59    9 51.7   6.219   6.671   112   17.7     10.3 311.0   3:08 (331, 62)  
June  1  20  7.59   10 38.3   6.103   6.646   118   17.7     11.1 305.8   3:03 (344, 65)  

* C/1997 BA6 ( Spacewatch )


No observations have been reported since 2001 December. If it keeps the brightness of small outburst in 2001 autumn, it is probably brighter than 18 mag still now.
Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1    Mot.(') p.a.  Best Time(A, h)  
May  25  21 46.25   12 41.1   8.182   8.246    90   17.7      5.1 345.2   3:08 (294, 50)  
June  1  21 45.43   13 14.9   8.122   8.292    96   17.7      5.1 335.8   3:03 (300, 54)  

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