Weekly Information about Bright Comets (2008 May 31: South)

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Updated on June 14, 2008
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.

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* C/2007 W1 ( Boattini )

Now it is so bright as 4.7 mag (June 12, Marco Goiato). The apparent size is so large as 20 arcmin. Now it is brightest, and it keeps 4.5 mag in June. Now it is not observable in the Northern Hemisphere, but it will appear in the morning sky again at 5.5 mag in early July, then it keeps observable after that while the comet is fading gradually. In the Southern Hemipsphere, it keeps observable all the period until the comet fades out, although it will be low in mid June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   8 14.36  -25 25.9   0.239   0.966    71    5.2  18:26 ( 93, 52)  
June  7   7  8.67  -24  0.7   0.216   0.912    56    4.7  18:25 ( 82, 32)  

* 17P/Holmes

Great outburst occured on Oct. 24, and it bacame a naked eye comet of 2 mag. It kept so bright as 5.5 mag still on Apr. 30 (Carlos Labordena), but it was extremely faint and difficult to see. The size was so large, the diameter was larger than 60 arcmin. It is not observable in this summer. But it will become observable in good condition in autumn again. The extremely faint large diffuse object may be detected with a best sky condition, around 5-6 mag with a diameter of 1 or 2 degrees.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   6 12.85   34 39.3   4.252   3.364    25    5.8  18:26 (128, -7)  
June  7   6 24.05   34 19.4   4.317   3.393    21    5.8  18:25 (126, -9)  

* C/2008 A1 ( McNaught )

It is already very bright as 9.9 mag (June 6, Marco Goiato). Brightening well, and expected to be 6 mag in September. However, it keeps moving in the southern sky, and it is unobservable for a while in the Northern Hemisphere. It will appear in the evening sky at 6 mag in late September, but it keeps locating in the evening low sky until the end of 2008 when it fades out down to 9 mag. Then it turns to appear in the morning sky, and it keeps observable in the northern sky after that while fading gradually. In the Southern Hemisphere, it keeps observable until late October after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   5 57.39  -33 58.0   2.468   2.138    59   10.3  18:26 ( 67, 29)  
June  7   6  7.94  -34 19.0   2.381   2.056    59   10.0  18:25 ( 65, 26)  

* C/2008 C1 ( Chen-Gao )

It reached up to 9.5 mag on Mar. 29 (Maik Meyer). Now it is fading slowly. It has already faded down to 10.7 mag (May 11, Marco Goiato). Diffuse object with a weak condensation. In the Northern Hemisphere, it will never be observable again. In the Southern Hemisphere, it keeps observable until it fades out.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   7 23.38   -4 25.0   1.863   1.428    49   11.2  18:26 (108, 31)  
June  7   7 37.69   -7 57.0   1.931   1.480    49   11.4  18:25 (103, 31)  

* C/2006 Q1 ( McNaught )

Now it is brightest at 10.9 mag (May 11, Marco Goiato). It will keep 11 mag for a long time until August. In the Southern Hemisphere, it keeps observable in good condition until summer. In the Northern Hemisphere, the altitude will never be higher than 30 degrees in the evening sky, and the comet will be unobservable in July. It will appear in the morning sky again at 13 mag at the end of 2008, then it keeps bright and observable for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10 18.17  -15 22.3   2.552   2.786    92   11.3  18:26 (151, 68)  
June  7  10 27.53  -13 25.3   2.629   2.778    87   11.3  18:25 (144, 64)  

* C/2008 J1 ( Boattini )

New bright comet. Brightening rapidly, and now it is so bright as 11.1 mag (June 7, Juan Jose Gonzalez). In the Northern Hemisphere, it keeps observable at 11-12 mag for a long time after this until autumn. It will move near by the Northern Pole from summer to autumn, and will be observable all night. Then it keeps observable until 2009 spring when the comet becomes faint. In the Southern Hemisphere, it is only observable until mid June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  21 33.37   34  5.7   1.517   1.813    89   11.8   4:58 (180, 21)  
June  7  21 40.19   40 36.7   1.480   1.788    89   11.6   4:38 (180, 15)  

* 19P/Borrelly

It will reach to 11 mag in summer. It must have already brightened up to 12 mag, but the comet was not observed recently. The condition in this apparition is bad. In the Southern Hemisphere, it keeps extremely low, or under the horizon, so it will not be observable. In the Northern Hemisphere, it is not observable until August when it appears in the morning sky at 11 mag. After August, it keeps observable and fading in the morning sky.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   3 20.43    4 41.7   2.344   1.483    24   11.8   5:29 (260,  6)  
June  7   3 40.55    7 12.4   2.309   1.453    24   11.7   5:32 (256,  7)  

* C/2006 OF2 ( Broughton )

Now it is bright as 12.4 mag (June 7, Carlos Labordena), brightening almost as expected. It will reach to 10.5 mag and will be observable in good condition in 2008 autumn. It keeps observable, visible visually, brighter than 14 mag for one year until 2009 May.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   1 15.55   30  6.7   3.327   2.702    44   11.9   5:29 (221, 11)  
June  7   1 28.45   32  7.5   3.245   2.670    47   11.8   5:32 (216, 11)  

* C/2007 G1 ( LINEAR )

Now it is bright as 11.5 mag (June 7, Juan Jose Gonzalez). It keeps bright at 12 mag for a long time from 2008 spring to 2009 spring. However, it is only observable until August in the Northern Hemisphere because the comet moves southwards. It keeps observable for a long time in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  17 31.21  -16 58.7   2.188   3.180   165   12.2   0:58 (180, 72)  
June  7  17 18.02  -19  2.5   2.129   3.141   174   12.1   0:17 (180, 74)  

* 8P/Tuttle

It passed near by Earth in early January, and it became a bright large object at 5.4 mag (Jan. 3, Seiichi Yoshida). It was visible with naked eyes. Now it is fading rapidly. It has already faded down to 11.3 mag (May 10, Marco Goiato). It has already moved away towards the southern sky, and it is no longer observable in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable until it fades out.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   9 41.16  -60 32.2   1.528   2.013   102   12.8  18:26 ( 21, 61)  
June  7  10 14.29  -58 55.9   1.599   2.085   103   13.3  18:25 ( 21, 63)  

* C/2008 J4 ( McNaught )

New bright comet, but extremely diffuse. It will approach to the sun down to 0.45 A.U. on June 19. So it will brighten very rapidly after this. In the Northern Hemisphere, it will be observable at 12 mag in the morning low sky from early June to mid June. Then it will never be observable again. In the Southern Hemisphere, it is observable only until late May. Now it brightened up to 11.7 mag (June 7, Juan Jose Gonzalez).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   1 36.33   33 35.6   0.735   0.658    40   13.5   5:29 (222,  6)  
June  7   3  8.48   45 59.1   0.814   0.548    32   12.9   5:32 (221,-11)  

* 15P/Finlay

Now it is so bright as 11.6 mag (June 4, Alan Hale). It will be bright at 11-12 mag until July. However, it keeps locating extremely low for a while in the Northern Hemisphere. It will be getting higher gradually after late July, then it keeps observable while fading gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   1 21.64    4 51.2   1.342   1.025    49   13.7   5:29 (240, 29)  
June  7   1 52.86    8 38.8   1.350   0.997    47   13.2   5:32 (237, 26)  

* P/2008 J2 ( Beshore )

New comet. It is bright as 12.7 mag, and visible visually (May 12, Juan Jose Gonzalez). It keeps observable in good condition until autumn. But it is moving southwards gradually, and the altitude will be getting somewhat lower in the Northern Hemisphere. The calculation says it keeps bright at 13 mag for a while. However, it can be in a temporary outburst now, and it may be a very faint short periodic comet originally. It may fade out very rapidly after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  16 50.42  -14 31.2   1.442   2.449   171   13.5   0:17 (180, 70)  
June  7  16 44.82  -14 55.6   1.449   2.457   171   13.5  23:39 (180, 70)  

* C/2007 B2 ( Skiff )

Now it is bright as 12.7 mag (Apr. 12, Marco Goiato). In the Northern Hemisphere, it will be getting lower gradually in the evening sky, and will be unobservable in late July. Then the comet will go southwards, so it will never be observable again in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable in good condition for a long time until autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  11 59.17   -2 30.7   2.572   3.084   110   13.6  19:22 (180, 58)  
June  7  12  0.74   -3 38.0   2.641   3.066   105   13.7  18:56 (180, 59)  

* C/2006 U6 ( Spacewatch )

It was 15 mag on Jan. 14 (Michael Mattiazzo), brightening as expected. It will reach to 13.5 mag in the southern sky in spring and summer. In the Southern Hemisphere, it keeps observable for a long time after this. But in the Northern Hemisphere, it is not observable now. But it will appear in the morning sky at 15 mag in November, then it keeps observable while the comet will be fading slowly.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   5 43.78  -41 10.7   2.748   2.499    65   13.7  18:26 ( 58, 29)  
June  7   6  8.12  -40 29.2   2.750   2.498    65   13.7  18:25 ( 59, 29)  

* C/2007 N3 ( Lulin )

Now it is 13.8 mag (May 12, Juan Jose Gonzalez), brightening as expected and already visible visually. It is getting higher gradually in the morning sky. It is expected to reach to 6 mag in 2009 February. After this, it keeps observable until October when it becomes 11 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  21 44.38  -12 33.3   2.856   3.279   105   13.9   5:10 (180, 68)  
June  7  21 38.44  -12 58.4   2.655   3.204   113   13.7   4:36 (180, 68)  

* 29P/Schwassmann-Wachmann 1

Now it is not observable. In the last season, it became so bright as 10 mag in 2008 January. It will appear in the morning sky in late August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   6 35.57   27 20.7   6.901   6.029    28   14.0  18:26 (125,  1)  
June  7   6 41.31   27 10.4   6.952   6.031    23   14.1  18:25 (122, -2)  

* C/2005 L3 ( McNaught )

Now it is 13.5 mag (May 8, Marco Goiato), bright and visible visually. It keeps observable visually at 13 mag at high location for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  15 55.46   21 57.3   4.915   5.680   135   14.6  23:17 (180, 33)  
June  7  15 46.93   22 25.1   4.967   5.689   131   14.6  22:41 (180, 33)  

* C/2006 W3 ( Christensen )

It is already bright as 14.7 mag and visible visually (Mar. 5, Seiichi Yoshida). It is expected to reach to 11 mag in 2009 summer. Because it moves in the northern sky, it keeps observable until it becomes brightest in the Northern Hemisphere. But it becomes low from April to June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   3 42.83   57 26.7   5.640   4.864    36   14.8   5:29 (217,-26)  
June  7   3 47.08   57 58.3   5.581   4.818    37   14.8   5:32 (214,-23)  

* C/2007 T1 ( McNaught )

It brightened up to 8.5 mag on Jan. 6 (Alexandre Amorim). It kept bright until March, however, now it is getting diffuse and fading rapidly. It faded down to 12.0 mag on Mar. 30 (Marco Goiato). Now it is not observable. It will appear in the morning sky in September, but it will be fainter than 18 mag at that time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   7  7.21    9  3.1   3.447   2.738    39   15.4  18:26 (117, 19)  
June  7   7 13.55    9 54.1   3.603   2.820    34   15.7  18:25 (114, 15)  

* 46P/Wirtanen

It brightened up to 8.3 mag on Feb. 6 (Juan Jose Gonzalez). However, now it is fading and getting diffuse very rapidly. It has already faded down to 14.0 mag (May 31, Hiroshi Abe). A small outburst was detected. In the Northern Hemisphere, it keeps observable in good condition until July when it becomes fainter than 18 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   9 38.70   25 52.2   1.895   1.801    69   15.6  18:26 (159, 26)  
June  7   9 56.45   24  6.5   2.009   1.861    66   16.1  18:25 (156, 27)  

* 61P/Shajn-Schaldach

The nuclear magnitude was reported as 17.5 mag on June 7, but the total brightness will be already bright as 16 mag. It will be getting higher gradually after this. It will be observable at 15 mag in good condition until November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   0 42.03    3 59.5   2.592   2.237    58   15.7   5:29 (232, 36)  
June  7   0 55.03    5  6.4   2.511   2.220    61   15.6   5:32 (227, 38)  

* C/2008 J6 ( Hill )

Now it is 15.3 mag (May 15, Ken-ichi Kadota). It keeps observable in good condition after this in the Northern Hemisphere. It will be fading gradually, and will be fainter than 18 mag in November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  23  2.24   19 40.4   2.088   2.093    76   15.8   5:29 (197, 34)  
June  7  23  8.76   23 28.2   2.053   2.119    79   15.8   5:32 (189, 31)  

* 6P/d'Arrest

Now it is 16.5 mag (June 11, Juan Antonio Henriquez Santana). It will be brightening rapidly after this. It will reach up to 9 mag and keep bright for a long time from summer to autumn. In the Northern Hemisphere, it becomes low in the south at brightest, but it keeps observable until it fades out.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  19  7.19   13  9.8   0.762   1.602   128   16.4   2:32 (180, 42)  
June  7  19 13.40   13 56.4   0.696   1.563   131   15.9   2:11 (180, 41)  

* C/2007 W3 ( LINEAR )

Now it is 16.8 mag (June 9, Yasukazu Ikari). It reaches to 16 mag from May to July, and observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  15 56.16   80 16.0   1.691   1.777    77   16.1  23:11 (180,-25)  
June  7  15  5.48   75 25.3   1.643   1.777    80   16.1  21:57 (180,-20)  

* 85P/Boethin

It is expected to reach up to 7.5 mag in winter, and will be observable in good condition. However, this comet has not been observed since 1986. It is predicted to be already brightening as 16 mag. However, it was not detected, fainter than 18 mag, on May 31 (Katsumi Yoshimoto). The condition of this apparition is good. It keeps observable for a long time until 2009 early summer both in the Northern Hemisphere and Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  20 47.27  -22 39.4   1.998   2.673   121   16.5   4:13 (180, 78)  
June  7  20 49.21  -22 40.4   1.862   2.610   127   16.2   3:47 (180, 78)  

* 79P/du Toit-Hartley

Now it is 16.0-16.5 mag (May 22, Michael Jager). It will be observable at 16-17 mag from April to July. It will be fainter than 18 mag in August. It keeps locating in the evening sky all time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10  0.11    8 10.2   0.907   1.231    79   16.3  18:26 (158, 45)  
June  7  10 24.90    5 45.8   0.916   1.236    79   16.4  18:25 (157, 47)  

* C/2007 M2 ( Catalina )

Now it is 16.8 mag (Feb. 29, Ken-ichi Kadota). It keeps 16 mag for one year from 2008 spring to 2009 spring. In the Northern Hemisphere, it had been observable in good condition for a long time, but it will be too low to observe in July. Then the comet goes southwards, and it will never observable again, except for locating extremely low in the morning sky from November to December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10 51.57    3 25.4   3.756   3.943    93   16.3  18:26 (175, 52)  
June  7  10 50.10    2 23.8   3.845   3.916    86   16.4  18:25 (164, 52)  

* 26P/Grigg-Skjellerup

In April, it became so bright as 11.3 mag (Apr. 12, Marco Goiato). But CCD observers reported it was faint as 15 mag. It was difficult to see because extremely diffuse. In the Northern Hemisphere, it had been low until March, but now it locates high. But it is already fading. Mieczyslaw L. Paradowski reported it was 12.8 mag visually on June 6. However, no other visual observations have been reported since mid April.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  20 37.43   23 17.2   0.743   1.406   105   16.6   4:03 (180, 32)  
June  7  20 36.30   25 26.5   0.765   1.456   109   16.8   3:34 (180, 30)  

* 22P/Kopff

It will be bright at 9-10 mag for a long time from spring to autumn in 2009. An outburst occured in February, and it brightened up to 16.0 mag (Feb. 28, Mt. Lemmon Survey) although it was predicted to be so faint as 19 mag. It had been reported brighter than predicted until early April. However, it returned to be so faint, fainter than 18 mag, after mid April.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10  0.16   15 34.6   3.414   3.334    76   16.9  18:26 (161, 37)  
June  7  10  4.94   15  6.7   3.476   3.297    71   16.9  18:25 (155, 36)  

* 68P/Klemola

Now it is 17.2 mag (May 10, Gustavo Muler). It keeps observable while the comet will be brightening gradually after this. It will reach up to 14.5 mag in autumn. However, then it locates low in the evening sky, and it will be unobservable soon in December.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  15 44.83   -3 58.4   1.876   2.844   158   17.1  23:07 (180, 59)  
June  7  15 39.37   -3 34.8   1.860   2.799   152   16.9  22:34 (180, 59)  

* 7P/Pons-Winnecke

An outburst occured in late May, and it brightened up to 14.6 mag (May 23, Gustavo Muler). It is still bright as 15.7 mag (May 25, Ken-ichi Kadota). However, it will return to be faint as 16-17 mag soon. It will reach to 14 mag in autumn, but it locates extremely low in the Northern Hemisphere. However, it keeps higher than 30 degree even in the Northern Hemisphere until August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10 48.43   33 52.5   1.710   1.848    81   17.2  18:26 (177, 21)  
June  7  10 56.90   31 59.4   1.722   1.796    77   17.1  18:25 (173, 23)  

* 180P/2006 U3 ( NEAT )

Now it is 16.0-16.5 mag (May 22, Michael Jager), brightened as expected. After this, it will be getting fainter slowly and getting lower slowly in the evening sky.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  10 59.59   25 56.0   2.318   2.469    86   17.2  18:26 (179, 29)  
June  7  11  7.53   24 24.2   2.395   2.470    82   17.3  18:25 (174, 31)  

* 2005 WY3

Peculiar asteroid moving on a cometary orbit. It reached up to 15.0 mag on Mar. 11 (Katsumi Yoshimoto). It has passed the perihelion in late January, but still completely asteroidal. It is already going away from the sun and fading. In the Northern Hemisphere, it keeps observable until July when it becomes fainter than 18 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  11 36.91    8 10.1   1.816   2.251   101   17.2  19:00 (180, 47)  
June  7  11 46.69    8 20.5   1.937   2.295    97   17.4  18:43 (180, 47)  

* C/2008 H1 ( LINEAR )

Now it is 16.8 mag (May 25, Ken-ichi Kadota). It keeps observable in good condition while the comet will be fading slowly.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  13  4.84   65 10.1   2.779   2.862    84   17.3  20:27 (180,-10)  
June  7  12 57.75   61 29.5   2.828   2.882    82   17.4  19:52 (180, -6)  

* C/2005 S4 ( McNaught )

It was observed at 16.5-17 mag in 2006 and 2007. Because it is a very distant comet, it is observable at 17 mag still in 2008 in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  19 17.07   41  1.6   5.903   6.265   106   17.3   2:43 (180, 14)  
June  7  19  9.77   42  1.7   5.883   6.283   108   17.3   2:08 (180, 13)  

* C/2007 M3 ( LINEAR )

Now it is brightest at 17 mag. But it will be fading gradually, and it will be fainter than 18 mag in July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  14 24.66  -12 44.3   3.332   4.228   148   17.4  21:46 (180, 68)  
June  7  14 13.55  -12 15.2   3.447   4.263   138   17.5  21:08 (180, 67)  

* C/2002 VQ94 ( LINEAR )

It had been observed at 16.5 mag for a long time from 2005 to 2007. Now it is fading. But it keeps observable at 17.5 mag in good condition for a long time until July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  13 54.87   14 49.2   8.001   8.645   126   17.5  21:17 (180, 40)  
June  7  13 52.52   14 23.6   8.109   8.672   120   17.6  20:47 (180, 41)  

* 187P/2007 E3 ( LINEAR )

Although it was so faint as 20 mag still in January, it brightened rapidly and reached up to 17.1 mag now (May 15, Yasukazu Ikari). It is observable in good condition until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  14 38.55    1 57.2   2.861   3.723   143   17.8  22:01 (180, 53)  
June  7  14 35.73    1 42.7   2.914   3.720   136   17.9  21:30 (180, 53)  

* C/2007 K3 ( Siding Spring )

No observations have been succeeded since 2007 July. It was predicted to be so bright as 14 mag now. But actually, it is fainter than 19 mag and not detectable (June 1, Gustavo Muler). It will locate in good condition from spring to summer. But it seems to have already disappeared.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31  22  1.52    1 56.5   1.733   2.104    96   20.1   5:26 (180, 53)  
June  7  22  8.99    4  2.3   1.692   2.125   100   20.2   5:06 (180, 51)  

* 2008 HW1

The condition in the Northern Hemisphere was very good in first half of May, and it was observed at 16 mag. It will approach to the sun down to 0.1 A.U. on June 17. If it shows a cometary activity, it may become much brighter than this ephemeris. However, it is not observable on the earth.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  31   5  7.79   37 20.3   0.422   0.623    17   23.2  18:26 (122,-19)  
June  7   5  3.08   28 56.8   0.598   0.425     6   27.6  18:25 (111,-21)  

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