Weekly Information about Bright Comets (2015 June 6: South)

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Updated on June 5, 2015
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* C/2015 G2 ( MASTER )

It brightened up to 6.0 mag in mid May (May 14, Chris Wyatt). It will be fading after this. But it is bright as 7.9 mag still now (June 4, Chris Wyatt). In the Southern Hemisphere, it keeps observable in good condition until late June. In the Northern Hemisphere, it keeps unobservable until September when the comet will be fainter than 13 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   7 31.85   -1 18.3   1.107   0.821    45    7.9  18:25 (109, 27)  
June 13   7 46.44    2 34.9   1.346   0.872    40    8.6  18:25 (110, 22)  

* C/2014 Q2 ( Lovejoy )

It brightened up to 3.7 mag and became a naked eye comet in mid January (Jan. 13, Marek Biely). Now it is fading. But it is bright as 8.2 mag still now (June 4, Maik Meyer). In the Northern Hemisphere, it keeps observable all night until July when the comet will fade down to 10 mag. Then it keeps observable for a long time until the comet fades out. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  15 15.15   86 27.1   2.338   2.219    70    8.4  22:09 (180,-31)  
June 13  14 49.70   83  0.1   2.386   2.293    72    8.6  21:22 (180,-28)  

* C/2014 Q1 ( PanSTARRS )

Now it is 9.9 mag (June 1, Chris Wyatt), fainter than originally predicted. It will approach to the sun down to 0.3 a.u. in July, and it was expected to brighten up to 3 mag. But actually, it will be 6 mag at best. In the Southern Hemisphere, it is observable in the extremely low sky until early June. Then it becomes unobservable temporarily, but it will be observable after mid July, and keeps observable while the comet will be fading gradually. It will not be observable after this in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   3  2.47   22 23.8   1.662   0.868    25    9.6   5:31 (240,  3)  
June 13   3 41.59   26 59.1   1.531   0.720    23    8.9   5:34 (237, -1)  

* 88P/Howell

Now it is bright as 10.4 mag (June 4, Chris Wyatt). In the Southern Hemisphere, it keeps observable in good condition for a long time until the comet fades out. In the Northern Hemisphere, it will be getting higher gradually after this, and will be observable in good condition while the comet will be fading gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 53.82    1 35.3   1.696   1.511    61   10.1   5:31 (231, 40)  
June 13   1  9.82    3 12.1   1.686   1.545    64   10.3   5:34 (226, 41)  

* C/2013 US10 ( Catalina )

Now it is 11.8 mag (June 4, Chris Wyatt). It is expected to brighten up to 5 mag from autumn to winter. It keeps observable in excellent condition until autumn in the Southern Hemisphere. In the Northern Hemisphere, it is observable in the morning low sky until mid July. But after that, it keeps unobservable until late November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23 53.38  -26 54.1   2.535   2.695    87   10.9   5:31 (252, 70)  
June 13  23 55.82  -28 45.8   2.328   2.608    94   10.6   5:34 (247, 76)  

* 19P/Borrelly

It brightened up to 12.8 mag until March (Mar. 21, Michael Mattiazzo). It will brighten up to 10.5 mag in May and June, but it is not observable. In the Northern Hemisphere, it will be observable after autumn while the comet will be fading.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   4 55.26   22 34.9   2.367   1.352     0   10.6  18:25 (106,-18)  
June 13   5 19.01   24 41.5   2.375   1.360     1   10.7   5:34 (252,-18)  

* 6P/d'Arrest

It will brighten up to 11 mag in April and May. But the condition is bad in this apparition. In the Southern Hemisphere, it is getting higher gradually in the morning sky. It will not be observable until late July in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   2 45.03    3 19.3   2.429   1.726    36   12.3   5:31 (252, 19)  
June 13   3  1.72    3 56.2   2.438   1.771    39   12.6   5:34 (249, 21)  

* 22P/Kopff

Now it is 12.7 mag and visible visually (May 15, Uwe Pilz). It will brighten up to 11 mag in 2015 autumn. In this apparition, it is observable until the highlight while the comet is brightening.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12 23.23    4 34.1   1.510   2.071   108   12.8  19:26 (180, 51)  
June 13  12 26.61    3 54.0   1.545   2.031   102   12.7  19:02 (180, 51)  

* C/2012 F3 ( PanSTARRS )

Now it is 14.3 mag (May 22, Yuji Ohshima). In 2015, it keeps 13-14 mag and will be observable in good condition for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  19 28.12   -8 23.2   2.660   3.502   140   13.1   2:33 (180, 63)  
June 13  19 27.14   -8 21.3   2.619   3.512   146   13.0   2:05 (180, 63)  

* C/2015 F4 ( Jacques )

Now it is 13.4 mag (May 26, Hirohisa Sato). It is expected to brighten up to 12 mag from July to August. In the Southern Hemisphere, it keeps observable in good condition until summer. In the Northern Hemisphere, it will be getting higher gradually after May, and will be observable in good condition after summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  20 56.79  -22  1.9   1.088   1.859   124   13.4   4:02 (180, 77)  
June 13  20 54.82  -17 13.3   0.989   1.818   130   13.1   3:32 (180, 72)  

* 29P/Schwassmann-Wachmann 1

It was observed as bright as 11-12 mag from early May to mid May.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  17 42.48  -31 46.3   5.048   6.037   165   13.4   0:48 (180, 87)  
June 13  17 38.81  -31 42.6   5.031   6.035   170   13.4   0:17 (180, 87)  

* 67P/Churyumov-Gerasimenko

Now it is 15.5 mag (May 29, A. Maury, J.-F. Soulier, J.-G. Bosch, T. Noel). It will brighten up to 11 mag from August to October. In the Northern Hemisphere, it will be getting higher gradually after July, then it keeps observable in good condition. In the Southern Hemisphere, it keeps low until November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   2 13.90    9 56.3   2.110   1.489    40   13.8   5:31 (241, 20)  
June 13   2 36.23   12  7.0   2.049   1.446    41   13.5   5:34 (238, 20)  

* C/2014 W11 ( PanSTARRS )

It brightened very rapidly. Now it is so bright as 13.8 mag and visible visually (May 11, Sandor Szabo). It keeps 14-15 mag for a while after this. In the Northern Hemisphere, it will be getting lower gradually after May, and will be unobservable in mid June. In the Southern Hemisphere, it will be getting lower gradually after June, and will be unobservable in early August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   9 28.92    6 20.4   3.677   3.428    67   14.3  18:25 (141, 41)  
June 13   9 36.35    5 41.5   3.761   3.427    63   14.4  18:25 (136, 39)  

* C/2012 K1 ( PanSTARRS )

It brightened up to 6.9 mag in 2014 autumn (Oct. 17, Marco Goiato). Now it is fading. It has already faded down to 14.8 mag (May 22, C. W. Hergenrother). In the Southern Hemisphere, it keeps observable in good condition until the comet fades out. It will be observable again in mid June also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 55.56  -17 21.0   4.167   3.948    70   14.9   5:31 (252, 52)  
June 13   0 55.10  -17 46.5   4.124   4.021    77   14.9   5:34 (244, 59)  

* C/2011 KP36 ( Spacewatch )

Now it is 15.2 mag (May 25, Hiroshi Abe). Distant object, but it keeps observable at 14-15 mag for a long time from 2015 to 2016.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  21 30.94   -0 47.8   5.091   5.512   109   14.9   4:36 (180, 56)  
June 13  21 31.72   -0 39.4   4.973   5.490   115   14.9   4:09 (180, 56)  

* C/2015 C2 ( SWAN )

It brightened up to 9.2 mag in March (Mar. 9, Juan Jose Gonzalez). Now it is fading. It has already faded down to 14.8 mag (May 26, Hiroshisa Sato). In the Northern Hemisphere, it will be getting higher gradually after this. It is not observable after this in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   2  9.12   70  4.3   2.231   1.817    53   15.0   5:31 (198,-22)  
June 13   2 17.70   74 35.3   2.272   1.914    56   15.3   5:34 (193,-24)  

* C/2015 F2 ( Polonia )

It approached to the earth, and brightened up to 12.0 mag from April to May (Apr. 24, Taras Prystavski). Now it is fading, but it is bright as 14.5 mag still now (May 25, Hiroshi Abe). it will be fainter than 18 mag in late July. It is observable in excellent condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  22  7.60   13 21.7   0.792   1.343    95   15.1   5:12 (180, 42)  
June 13  22 11.57   18 35.4   0.818   1.391    98   15.4   4:48 (180, 36)  

* 51P/Harrington

Now it is 16.4 mag (May 28, A. Maury, J.-G. Bosch, J.-F. Soulier). It will be observable at 13 mag in good condition from summer to autumn. The fragment D is also observed at 21.9 mag (May 30, Pan-STARRS 1).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23 34.43   -8  5.6   1.623   1.820    83   15.4   5:31 (214, 59)  
June 13  23 50.17   -6 49.7   1.547   1.797    86   15.1   5:34 (206, 59)  

* C/2013 X1 ( PanSTARRS )

Now it is 15.1 mag (Apr. 17, Taras Prystavski). It will pass close to the earth from spring to summer in 2016, and it is expected to be observable at 6-7 mag in good condition. It is not observable now. In the Northern Hemispehre, it will appear in the morning sky in late July, then it keeps observable in excellent condition until winter. In the Southern Hemisphere, it will be observable after mid August, but it keeps very low until winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   5  7.15   33 35.4   5.211   4.221    11   15.3  18:25 (117,-21)  
June 13   5 10.95   33 42.7   5.145   4.152    10   15.2   5:34 (243,-21)  

* 57P/du Toit-Neujmin-Delporte

Now it is 17.0 mag (May 24, C. Rinner, F. Kugel, J. Nicolas). It is expected to brighten up to 15 mag in summer, and will be observable in excellent condition. However, it is fainter than this ephemeris recently.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23 10.13   -2 15.9   1.458   1.734    87   15.3   5:31 (199, 56)  
June 13  23 23.47   -0 52.3   1.410   1.740    90   15.3   5:34 (191, 55)  

* C/2014 A4 ( SONEAR )

Now it is 15.8 mag (Feb. 22, Taras Prystavski). It will brighten up to 14 mag from 2015 to 2016. In the Southern Hemisphere, it becomes unobservable temporarily from April to May, but it will be observable in good condition again after June. It will be observable in good condition after July also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   3  9.37    4 25.3   5.087   4.251    31   15.3   5:31 (255, 13)  
June 13   3 11.16    5 11.9   5.014   4.241    36   15.3   5:34 (250, 18)  

* C/2014 N3 ( NEOWISE )

Now it is 15.3 mag (Jan. 7, Taras Prystavski). It keeps 15 mag for a long time from 2014 to 2015. It is observable in excellent condition in 2014 in the Southern Hemisphere, or in 2015 in the Northern Hemisphere. It will be getting higher gradually in the morning sky.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1 57.25   19  0.1   4.657   3.952    41   15.3   5:31 (232, 16)  
June 13   2  1.97   20 31.1   4.594   3.964    46   15.3   5:34 (226, 19)  

* 205P/Giacobini

Now it is 17.1 mag (Apr. 27, Hidetaka Sato). First return of a comet re-discovered after 112-year blank in 2008. It brightened up to 12 mag in 2008. In this apparition, it was expected to brighten up to 15 mag from spring to summer, but it is fainter than predicted. It keeps locating low in the morning sky for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1 13.60   10 18.6   1.919   1.555    53   15.3   5:31 (229, 30)  
June 13   1 33.06   11 15.4   1.895   1.568    55   15.3   5:34 (226, 31)  

* C/2010 S1 ( LINEAR )

Now it is 16.0 mag (May 26, Yasukazu Ikari). It is observable at 15-16 mag in good condition in 2015.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  18 31.69  -21 29.9   6.886   7.832   157   15.6   1:37 (180, 76)  
June 13  18 26.61  -21 54.5   6.876   7.863   165   15.6   1:05 (180, 77)  

* C/2006 S3 ( LONEOS )

It brightened up to 11-12 mag in 2012. It has already faded down to 15.5 mag (May 11, Sandor Szabo). It keeps observable at 15 mag in good condition until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  10 56.88   -4 12.8   9.492   9.587    92   15.7  18:25 (168, 59)  
June 13  10 56.26   -4  3.2   9.651   9.624    85   15.7  18:25 (155, 57)  

* 7P/Pons-Winnecke

It must have brightened up to 11 mag from January to February, but no observations have been reported. Now it is 15.6 mag (Apr. 24, Taras Prystavski). In the Southern Hemisphere, it is observable in the morning sky after this while the comet will be fading. In the Northern Hemisphere, it will be getting higher after July, but the comet will be faitner than 17 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1 33.71  -10  9.4   2.218   1.904    58   16.0   5:31 (251, 41)  
June 13   1 46.31   -9 44.8   2.211   1.958    62   16.2   5:34 (247, 44)  

* 218P/LINEAR

Now it is bright as 13.9 mag and visible visually (May 14, Chris Wyatt). In this apparition, it turns to approach to the sun down to 1.17 a.u., and it was expected to brighten up to 13 mag from March to May. But actually, it brightened up to 14-15 mag at best. It will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  21 34.18   -7 17.5   0.511   1.291   111   16.2   4:39 (180, 62)  
June 13  21 40.94   -6 46.5   0.519   1.328   116   16.3   4:18 (180, 62)  

* 117P/Helin-Roman-Alu 1

It brightened up to 13 mag in 2014. Now it is 15.5 mag (Jan. 3, Ken-ichi Kadota). It will be fading slowly after this. It is observable at 16 mag in excellent condition from summer to winter in 2015.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1  5.37   -0 14.8   4.056   3.657    60   16.2   5:31 (235, 39)  
June 13   1 11.49    0 18.3   3.983   3.672    65   16.2   5:34 (229, 43)  

* 318P/2014 M6 ( McNaught-Hartley )

First return of a periodic comet discovered in 1994. Now it is 16.9 mag (May 25, MASTER-SAAO Observatory, Sutherland). It will brighten up to 15 mag from summer to autumn, and will be observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  22 35.89  -32  8.0   2.290   2.741   105   16.4   5:31 (213, 86)  
June 13  22 43.35  -32 16.8   2.192   2.714   110   16.2   5:20 (180, 87)  

* 44P/Reinmuth 2

It brightened up to 16.4 mag in 2014 (Nov. 14, J. F. Hernandez). It will be observable at 16 mag again from summer to autumn in 2015.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1 48.93   16  7.7   2.807   2.193    43   16.3   5:31 (232, 20)  
June 13   2  2.39   17 26.5   2.769   2.207    47   16.2   5:34 (228, 22)  

* 10P/Tempel 2

Now it is 16.4 mag (May 22, J. Gonzalez). It keeps observable after this while the comet will be getting brighter graudually. It will brighten up to 11 mag from autumn to winter. But it locates low at that time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  13 59.45    7 16.7   1.334   2.115   127   16.6  21:01 (180, 48)  
June 13  13 56.50    6 36.6   1.351   2.071   121   16.3  20:31 (180, 49)  

* 32P/Comas Sola

It brightened up to 13 mag in winter. Now it is fading. It has already faded down to 15.9 mag (May 20, Hiroshi Abe). It keeps observable in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  11 32.06   11 54.6   2.545   2.805    94   16.4  18:35 (180, 43)  
June 13  11 37.80   10 46.8   2.670   2.843    89   16.6  18:25 (176, 44)  

* 141P/Machholz 2

Now it is 19 mag (May 24, WISE). It will brighten very rapidly, and it is expected to brighten up to 11 mag from summer to autumn. In the Northern Hemisphere, it keeps observable in good condition in the morning sky. It keeps locating extremely low from summer to autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  22 40.22    7 21.6   1.020   1.443    90   17.1   5:31 (185, 48)  
June 13  23  5.55   11 37.5   0.923   1.365    89   16.4   5:34 (183, 43)  

* 319P/2015 G1 ( Catalina-McNaught )

First return of a periodic comet discovered in 2008. Now it is 17.2 mag (May 19, Catalina Sky Survey). It will approach to the earth from spring to summer, and brighten rapidly. It will brighten up to 16 mag, and will be observable in good condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23  5.97   -5 25.3   0.727   1.241    89   16.5   5:31 (199, 59)  
June 13  23 38.88   -5  3.6   0.707   1.221    88   16.4   5:34 (200, 59)  

* 221P/LINEAR

Now it is 15.8 mag (May 26, Catalina Sky Survey). It will brighten rapidly, and will be observable at 16.5 mag in good condition from May to July.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  16 24.48  -11 51.9   0.784   1.788   167   16.5  23:26 (180, 67)  
June 13  16 22.28  -10 22.8   0.787   1.777   160   16.5  22:56 (180, 65)  

* C/2013 V2 ( Borisov )

Now it is 16.1 mag (May 20, Hiroshi Abe). In the Northern Hemisphere, it keeps 15-16 mag and observable in excellent condition until early summer. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12 40.24   24  4.3   3.759   4.103   102   16.5  19:42 (180, 31)  
June 13  12 40.99   22 37.3   3.877   4.136    97   16.6  19:16 (180, 33)  

* C/2013 A1 ( Siding Spring )

It brightened up to 9 mag from autumn to winter in 2014. Now it is fading rapidly. It has already faded down to 14.8 mag (May 26, Yasukazu Ikari). In the Northern Hemisphere, it will be observable in excellent condition after this while the comet will be fading. In the Southern Hemisphere, it is hardly observable after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  13 13.96   52 59.2   3.056   3.232    90   16.6  20:15 (180,  2)  
June 13  13  2.27   51 23.7   3.212   3.303    86   16.9  19:36 (180,  4)  

* 61P/Shajn-Schaldach

Now it is 17.5 mag (Apr. 27, Hidetaka Sato). It will be observable at 15 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 23.45    2 37.5   2.468   2.296    68   16.8   5:31 (222, 43)  
June 13   0 35.29    3 38.8   2.377   2.277    71   16.7   5:34 (216, 45)  

* 299P/2014 D2 ( Catalina-PanSTARRS )

Now it is 17.7 mag (Feb. 17, K. Hills). It keeps observable at 17 mag from spring to summer. It locates somewhat low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  16 58.81  -26 57.3   2.171   3.184   175   16.7   0:05 (180, 82)  
June 13  16 53.86  -26 28.3   2.180   3.190   172   16.7  23:28 (180, 81)  

* C/2011 J2 ( LINEAR )

Getting observable again in the morning sky. It is fading, but it is observable at 17 mag in good condition until late autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23 48.99   12 51.0   5.984   5.762    72   16.8   5:31 (206, 38)  
June 13  23 48.97   12 39.2   5.912   5.807    79   16.8   5:34 (197, 41)  

* C/2015 K1 ( MASTER )

Now it is 15.8 mag (May 18, MASTER-SAAO Observatory, Sutherland). It keeps observable in good condition until the comet fades out. In 2014, it must have been observable at 14 mag in good condition in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 35.80   -4  9.5   3.784   3.539    68   16.9   5:31 (231, 47)  
June 13   0 40.29   -3 16.5   3.737   3.586    73   16.9   5:34 (223, 50)  

* 162P/Siding Spring

In the Northern Hemisphere, it will be getting higher gradually in the morning sky. Then it keeps observable at 17 mag in good condition from summer to winter. In the Southern Hemisphere, it keeps extremely low and hard to observe for a long time after August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   2 15.68    2  0.3   1.842   1.309    43   17.0   5:31 (248, 25)  
June 13   2 36.54    5 32.2   1.809   1.284    43   16.9   5:34 (243, 25)  

* C/2012 X1 ( LINEAR )

It brightened rapidly in outburst in mid October in 2013, then it keeps bright as 8-10 mag for a long time until 2014 summer. Now it is fading. It has already faded down to 15.8 mag (Feb. 9, Taras Prystavski). In the Southern Hemisphere, it keeps observable in good condition for a long time after this until the comet fades out. It is not observable in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   1 28.54  -32 40.7   5.650   5.455    73   17.0   5:31 (280, 53)  
June 13   1 33.14  -33  5.9   5.628   5.516    78   17.0   5:34 (278, 58)  

* C/2015 H1 ( Bressi )

Now it is 16.5 mag (May 1, R. A. Mastaler, A. F. Tubbiolo). It keeps 17 mag until summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  19 33.19   28 30.2   1.442   2.097   116   17.0   2:39 (180, 27)  
June 13  18 54.60   31 33.1   1.421   2.130   121   17.0   1:34 (180, 24)  

* P/2015 F1 ( PanSTARRS )

Now it is 16.1 mag (May 27, Catalina Sky Survey). It keeps 17 mag until July. It is observable in excellent condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  16 19.50  -23 44.8   1.576   2.584   171   17.1  23:21 (180, 79)  
June 13  16 14.42  -23 38.6   1.600   2.592   164   17.2  22:48 (180, 79)  

* 53P/Van Biesbroeck

Now it is 17.3 mag (May 22, K. Hills). It will brighten up to 14 mag and will be observable in good condition in 2016.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12 29.03    3 28.9   3.006   3.491   110   17.2  19:31 (180, 52)  
June 13  12 30.19    3 15.4   3.067   3.458   104   17.2  19:05 (180, 52)  

* C/2013 G9 ( Tenagra )

Now it is 16.3 mag (Apr. 19, Catalina Sky Survey). It keeps 17 mag for a long time from 2014 to 2016.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  10 42.72  -15 38.3   5.286   5.441    93   17.2  18:25 (153, 69)  
June 13  10 40.40  -15 11.8   5.418   5.452    86   17.2  18:25 (137, 65)  

* C/2014 R1 ( Borisov )

It brightened up to 10.6 mag from autumn to winter (Nov. 29, Seiichi Yoshida). Now it is fading. It has already faded down to 16.7 mag (May 26, Hiroshi Abe). It keeps observable for a long time until the comet fades out.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  17  3.09  -15 33.2   1.962   2.971   172   17.2   0:09 (180, 71)  
June 13  16 56.71  -15 46.8   2.038   3.044   170   17.5  23:30 (180, 71)  

* P/2009 L2 ( Yang-Gao )

First return of a new periodic comet which brightened up to 12 mag in 2009. It seems to brighten up to 17 mag in summer. It is observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it keeps locating extremely low after June.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  10  5.36   -6 21.7   1.426   1.621    81   17.4  18:25 (144, 56)  
June 13  10 20.39   -6 34.5   1.442   1.588    78   17.3  18:25 (139, 55)  

* C/2014 AA52 ( Catalina )

It brightened up to 15.3 mag in winter (Jan. 17, Taras Prystavski). Now it is fading. It is observable in good condition in the Southern Hemisphere. It will be observable in good condition after June also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 50.60  -18 47.2   2.420   2.324    72   17.4   5:31 (252, 54)  
June 13   0 45.95  -18  0.5   2.338   2.367    79   17.3   5:34 (242, 60)  

* C/2012 K8 ( Lemmon )

Now it is 17.4 mag (Apr. 14, A. Klotz, F. Kugel, J. Nicolas, C. Rinner). It keeps observable at 17-18 mag for a long time from 2013 to 2016. It keeps locating high in the Northern Hemisphere. It keeps locating very low in the Southern Hemipshere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  15  9.03   65 40.1   6.686   6.754    89   17.4  22:09 (180,-11)  
June 13  14 55.79   65 16.2   6.741   6.768    87   17.4  21:29 (180,-10)  

* C/2013 G3 ( PanSTARRS )

Now it is 17.9 mag (Mar. 21, W. Hasubick). It was observed at 17 mag in 2014 summer. In the Northern Hemisphere, it is observable at 17.5 mag in excellent condition also in 2015. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  22 14.28   51  1.0   4.319   4.236    78   17.4   5:19 (180,  4)  
June 13  22 17.46   51 53.8   4.294   4.262    81   17.5   4:54 (180,  3)  

* 174P/(60558) 2000 EC98 ( Echeclus )

Now it is 17.7 mag (May 10, A. Maury, J.-F. Soulier). It has brightened in outburst up to 14 mag twice, in 2006 January and 2011 May. It is around the perihelion now. It keeps observable at 17 mag for a long time after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  23 21.92   -3  1.0   5.826   5.821    84   17.8   5:31 (205, 55)  
June 13  23 24.32   -2 47.4   5.719   5.822    90   17.8   5:34 (193, 57)  

* 220P/McNaught

Now it is 19.2 mag (Mar. 22, iTelescope Observatory, Siding Spring). It will be observable at 17.5 mag in good condition in summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6   0 13.77    2  7.7   1.560   1.556    70   17.8   5:31 (220, 45)  
June 13   0 32.70    3 29.7   1.519   1.554    72   17.8   5:34 (215, 45)  

* C/2013 C2 ( Tenagra )

Very far object. However, outburst occured on Feb. 20, and it brightened up to 15 mag. It was reported so bright visually as 11.8 mag (Mar. 11, Marco Goiato). However, it has already faded down to 17.8 mag (May 16, K. Hills). It locates high in the Southern Hemisphere. But it locates somewhat low in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  12  1.08  -20  1.7   8.701   9.137   112   17.8  19:03 (180, 75)  
June 13  12  1.69  -19 47.0   8.800   9.136   106   17.8  18:36 (180, 75)  

* 40P/Vaisala 1

It brightened up to 15.5 mag from autumn to winter (Nov. 25, Taras Prystavski). Now it is fading. It has already faded down to 17.8 mag (May 20, A. Diepvens). It keeps observable in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June  6  17 37.20   -8 28.3   1.661   2.646   162   17.9   0:43 (180, 63)  
June 13  17 31.27   -8 47.3   1.694   2.690   165   18.1   0:09 (180, 64)  

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