Weekly Information about Bright Comets (2015 June 20: North)

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Updated on June 21, 2015
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Northern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* C/2014 Q1 ( PanSTARRS )

Now it is 8.0 mag (June 15, Alan Hale), 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. It is not observable now. In the Southern Hemisphere, 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 20   4 33.25   31 20.4   1.420   0.568    19    7.9   2:58 (230,  0)  
June 27   5 41.59   34  6.0   1.335   0.424    13    6.8   3:01 (223, -4)  

* 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 8.6 mag still now (June 20, Alexander Baransky). 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 20  14 45.22   79 26.1   2.436   2.368    74    8.8  21:03 (179, 46)  
June 27  14 46.35   75 48.6   2.490   2.442    75    9.0  21:04 (176, 49)  

* 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 8.2 mag still now (June 13, Marco Goiato). It will be unobservable soon also in the Southern Hemisphere. It will be observable again after September, but the comet will be fainter than 13 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20   7 56.12    5 25.4   1.570   0.938    34    9.2  21:03 (103, -9)  
June 27   8  3.29    7 36.9   1.774   1.015    29    9.8  21:04 (108,-12)  

* C/2013 US10 ( Catalina )

Now it is bright as 10.5 mag (June 20, Marco Goiato). 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 20  23 57.32  -31  7.7   2.124   2.521   100   10.3   2:58 (320, 11)  
June 27  23 57.51  -34  7.6   1.925   2.432   107    9.9   3:01 (327, 12)  

* 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 20   1 24.95    4 41.7   1.674   1.580    66   10.5   2:58 (278, 20)  
June 27   1 39.16    6  3.7   1.660   1.618    69   10.7   3:01 (280, 24)  

* 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 20   5 43.33   26 33.1   2.386   1.373     3   10.8   2:58 (222,-14)  
June 27   6  8.10   28  8.6   2.399   1.391     5   11.0   3:01 (222,-12)  

* C/2015 F4 ( Jacques )

Brightening rapidly. Now it is so bright as 11.5 mag (June 20, Marco Goiato). It will brighten up to 11 mag from July to August. It is observale in good condition in the Northern Hemisphere, but it will be getting lower gradually in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  20 50.36  -11 35.1   0.904   1.781   136   12.0   2:58 (359, 43)  
June 27  20 43.27   -5  6.3   0.836   1.748   141   11.7   2:26 (  0, 50)  

* 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 20  12 31.42    3  4.7   1.580   1.991    97   12.6  21:03 ( 55, 44)  
June 27  12 37.57    2  6.8   1.616   1.952    92   12.4  21:04 ( 59, 39)  

* 67P/Churyumov-Gerasimenko

Now it is 14.7 mag (June 3, Taras Prystavski). 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 20   2 59.61   14 14.4   1.992   1.406    41   13.3   2:58 (257,  6)  
June 27   3 24.04   16 16.3   1.942   1.369    42   13.0   3:01 (256,  8)  

* 6P/d'Arrest

Now it is 12.7 mag (May 26, Michael Mattiazzo). 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 20   3 17.75    4 26.1   2.444   1.817    41   13.0   2:58 (262, -3)  
June 27   3 33.12    4 49.2   2.448   1.864    44   13.4   3:01 (264,  0)  

* C/2012 F3 ( PanSTARRS )

Now it is 14.2 mag (May 24, Taras Prystavski). 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 20  19 25.54   -8 24.4   2.589   3.524   153   13.0   1:36 (  0, 47)  
June 27  19 23.46   -8 32.4   2.570   3.538   158   13.0   1:06 (  0, 46)  

* 29P/Schwassmann-Wachmann 1

Now it is 13.0 mag (June 19, Chris Wyatt). It looks diffuse.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  17 35.08  -31 37.2   5.028   6.033   170   13.4  23:41 (  0, 23)  
June 27  17 31.42  -31 30.0   5.039   6.031   166   13.4  23:10 (  0, 24)  

* C/2014 W11 ( PanSTARRS )

It brightened very rapidly. Now it is so bright as 13.8 mag and visible visually (May 11, Sandor Szabo). In the Northern Hemisphere, it will be unobservable soon. 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 20   9 44.13    4 59.7   3.842   3.427    58   14.4  21:03 ( 87, 13)  
June 27   9 52.20    4 14.9   3.920   3.428    54   14.5  21:04 ( 89,  8)  

* 51P/Harrington

Now it is 15.7 mag (June 3, Taras Prystavski). 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 20   0  5.75   -5 35.0   1.474   1.777    89   14.8   2:58 (301, 29)  
June 27   0 21.13   -4 22.4   1.405   1.759    91   14.6   3:01 (303, 32)  

* 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 20  21 32.01   -0 34.5   4.860   5.467   122   14.8   2:58 (342, 53)  
June 27  21 31.81   -0 33.3   4.755   5.445   128   14.7   3:01 (354, 54)  

* 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. In the Northern Hemisphere, it keeps observable until winter, but it locates somewhat low.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20   0 53.92  -18 18.3   4.077   4.094    83   15.0   2:58 (302, 11)  
June 27   0 51.98  -18 56.2   4.028   4.167    90   15.0   3:01 (308, 16)  

* 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 20   5 14.85   33 51.6   5.065   4.082    13   15.1   2:58 (222, -5)  
June 27   5 18.78   34  1.9   4.972   4.013    17   15.0   3:01 (226, -1)  

* 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 20  23 35.22   16 24.2   0.839   1.287    87   15.7   2:58 (286, 49)  
June 27   0 10.56   21 34.4   0.771   1.209    83   15.0   3:01 (278, 50)  

* 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 became 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 20   3 12.69    5 56.8   4.930   4.231    42   15.2   2:58 (262, -1)  
June 27   3 13.88    6 40.2   4.836   4.223    47   15.2   3:01 (265,  5)  

* 57P/du Toit-Neujmin-Delporte

Now it is 16.2 mag (June 3, Taras Prystavski). 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 20  23 35.99    0 26.2   1.363   1.749    93   15.2   2:58 (302, 38)  
June 27  23 47.58    1 38.3   1.317   1.760    97   15.2   3:01 (306, 42)  

* 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 20   2  6.39   22  2.6   4.525   3.976    51   15.3   2:58 (257, 21)  
June 27   2 10.46   23 34.7   4.452   3.990    56   15.3   3:01 (259, 27)  

* 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 20   1 52.14   12  3.5   1.871   1.584    57   15.4   2:58 (268, 19)  
June 27   2 10.76   12 42.4   1.847   1.603    60   15.4   3:01 (269, 21)  

* 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 20   2 28.41   79  3.8   2.317   2.011    59   15.5   2:58 (193, 35)  
June 27   2 45.00   83 28.5   2.366   2.107    62   15.8   3:01 (188, 36)  

* 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 20  18 21.38  -22 18.7   6.883   7.893   173   15.6   0:32 (  0, 33)  
June 27  18 16.09  -22 42.4   6.908   7.924   178   15.7  23:54 (  0, 32)  

* 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 20  13 55.14    5 43.4   1.373   2.028   115   16.0  21:03 ( 29, 57)  
June 27  13 55.43    4 38.5   1.398   1.984   109   15.7  21:04 ( 39, 53)  

* 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 20  10 55.97   -3 55.9   9.808   9.662    78   15.8  21:03 ( 68, 21)  
June 27  10 55.97   -3 50.8   9.962   9.699    72   15.8  21:04 ( 73, 16)  

* 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 20  22 13.26   23 12.1   0.848   1.445   101   15.8   2:58 (297, 68)  
June 27  22 12.70   27 10.7   0.880   1.503   104   16.3   3:01 (301, 76)  

* 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 20  22 49.96  -32 30.2   2.098   2.688   114   16.1   2:58 (334, 17)  
June 27  22 55.63  -32 48.3   2.009   2.663   119   15.9   3:01 (339, 19)  

* 117P/Helin-Roman-Alu 1

It brightened up to 13 mag in 2014. Now it is 16.7 mag (June 3, Taras Prystavski). 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 20   1 17.19    0 47.9   3.906   3.688    70   16.2   2:58 (283, 19)  
June 27   1 22.41    1 13.8   3.825   3.703    75   16.1   3:01 (287, 24)  

* 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 20   2 15.64   18 41.0   2.727   2.222    50   16.2   2:58 (259, 17)  
June 27   2 28.64   19 51.0   2.684   2.239    53   16.2   3:01 (260, 21)  

* 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 20   0 11.38   -4 46.5   0.696   1.206    87   16.3   2:58 (299, 28)  
June 27   0 42.79   -4 34.8   0.693   1.198    86   16.3   3:01 (299, 28)  

* 7P/Pons-Winnecke

It must have brightened up to 11 mag from January to February, but no observations have been reported. Now it is 16.6 mag (June 3, 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 20   1 58.03   -9 27.5   2.199   2.012    65   16.4   2:58 (285,  5)  
June 27   2  8.86   -9 17.7   2.185   2.066    69   16.6   3:01 (288,  9)  

* 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. It will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  21 44.65   -6 33.6   0.527   1.369   121   16.5   2:58 (340, 46)  
June 27  21 45.45   -6 39.3   0.536   1.413   128   16.6   3:01 (350, 48)  

* 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 20   0 46.98    4 37.2   2.285   2.258    75   16.6   2:58 (285, 27)  
June 27   0 58.48    5 32.1   2.195   2.240    79   16.5   3:01 (287, 32)  

* 221P/LINEAR

Now it is 16.7 mag (June 12, Mitsunori Tsumura). It is 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 20  16 20.92   -9  6.6   0.799   1.769   153   16.5  22:27 (  0, 46)  
June 27  16 20.78   -8  5.7   0.820   1.763   147   16.5  22:00 (  0, 47)  

* C/2013 V2 ( Borisov )

Now it is 15.4 mag (May 24, Taras Prystavski). 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 20  12 42.42   21  9.7   3.999   4.169    92   16.7  21:03 ( 73, 57)  
June 27  12 44.47   19 42.2   4.124   4.202    87   16.8  21:04 ( 77, 51)  

* 32P/Comas Sola

It brightened up to 13 mag in winter. Now it is fading. It has already faded down to 17.9 mag (June 6, Mitsunori Tsumura). It keeps observable in good condition for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  11 44.01    9 38.1   2.796   2.880    84   16.7  21:03 ( 72, 39)  
June 27  11 50.63    8 28.9   2.923   2.918    79   16.9  21:04 ( 75, 34)  

* 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 20  16 49.19  -25 57.9   2.202   3.196   165   16.8  22:55 (  0, 29)  
June 27  16 45.08  -25 27.2   2.237   3.203   158   16.8  22:24 (  0, 30)  

* C/2011 J2 ( LINEAR )

Now it is 16.3 mag (May 25, Taras Prystavski). 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 20  23 48.43   12 24.1   5.836   5.852    85   16.8   2:58 (288, 44)  
June 27  23 47.36   12  5.3   5.760   5.897    92   16.8   3:01 (295, 49)  

* C/2015 K1 ( MASTER )

Now it is 16.5 mag (June 3, Taras Prystavski). 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 20   0 44.14   -2 27.4   3.683   3.631    79   16.9   2:58 (291, 24)  
June 27   0 47.32   -1 42.1   3.632   3.679    84   17.0   3:01 (295, 29)  

* 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 20   1 37.29  -33 35.9   5.605   5.576    83   17.1   2:58 (307, -6)  
June 27   1 40.95  -34 10.4   5.581   5.636    87   17.1   3:01 (311, -2)  

* 325P/2015 J4 ( Yang-Gao )

First return of a new periodic comet which brightened up to 12 mag in 2009. Now it is 18.3 mag (June 10, Hidetaka Sato), fainter than this ephemeris by 1 mag. It will be 17-18 mag at best in this apparition. 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 20  10 36.40   -6 54.5   1.458   1.557    75   17.2  21:03 ( 69, 16)  
June 27  10 53.69   -7 23.2   1.472   1.529    73   17.1  21:04 ( 71, 14)  

* 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 20  12 53.60   49 46.3   3.370   3.374    81   17.1  21:03 (132, 63)  
June 27  12 47.39   48 10.1   3.529   3.445    76   17.4  21:04 (126, 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 20  18 12.98   33 26.0   1.439   2.167   122   17.1   0:25 (  0, 88)  
June 27  17 32.19   33 58.8   1.496   2.205   121   17.3  23:08 (  0, 89)  

* 53P/Van Biesbroeck

Now it is 17.4 mag (June 12, Mitsunori Tsumura). 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 20  12 32.18    2 56.3   3.131   3.424    98   17.2  21:03 ( 54, 44)  
June 27  12 34.98    2 31.9   3.196   3.390    92   17.2  21:04 ( 60, 39)  

* P/2015 F1 ( PanSTARRS )

Now it is 16.3 mag (June 6, Mitsunori Tsumura). 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 20  16 10.08  -23 32.3   1.635   2.600   156   17.2  22:16 (  0, 31)  
June 27  16  6.74  -23 26.8   1.682   2.608   149   17.3  21:46 (  0, 32)  

* C/2014 AA52 ( Catalina )

It brightened up to 15.3 mag in winter (Jan. 17, Taras Prystavski). Now it is fading. It has already faded down to 17.8 mag (June 3, Taras Prystavski). It is observable in good condition in the Southern Hemisphere. It will be observable in good condition after this also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20   0 39.81  -17 19.1   2.251   2.411    86   17.3   2:58 (303, 14)  
June 27   0 31.94  -16 42.5   2.164   2.457    94   17.3   3:01 (310, 21)  

* C/2013 G9 ( Tenagra )

Now it is 16.6 mag (May 7, Taras Prystavski). 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 20  10 38.73  -14 50.2   5.550   5.462    79   17.3  21:03 ( 63, 11)  
June 27  10 37.65  -14 33.4   5.679   5.474    73   17.4  21:04 ( 68,  6)  

* 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 20  22 19.72   52 42.0   4.266   4.288    84   17.5   2:58 (215, 66)  
June 27  22 21.02   53 24.9   4.238   4.314    87   17.5   3:01 (206, 69)  

* 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 20  14 43.84   64 42.9   6.800   6.782    84   17.5  21:03 (177, 60)  
June 27  14 33.34   64  1.8   6.860   6.796    82   17.5  21:04 (168, 60)  

* 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 20  23 26.27   -2 36.6   5.613   5.824    96   17.7   2:58 (307, 37)  
June 27  23 27.78   -2 28.8   5.508   5.825   103   17.7   3:01 (314, 42)  

* 50P/Arend

Now it is 20.2 mag (June 15, Jean-Francois Soulier). It is expected to brighten rapidly, and to be observable at 16 mag in good condition from summer to winter. But actually, it is much fainter than this ephemeris.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  23 24.64  -17  2.7   2.331   2.741   102   17.8   2:58 (318, 26)  
June 27  23 29.15  -16 30.7   2.210   2.705   108   17.7   3:01 (323, 30)  

* 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 20   0 51.32    4 45.8   1.479   1.555    74   17.7   2:58 (284, 27)  
June 27   1  9.56    5 55.0   1.442   1.559    76   17.7   3:01 (285, 30)  

* 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 20  16 50.96  -16  1.6   2.127   3.116   163   17.8  22:57 (  0, 39)  
June 27  16 46.05  -16 17.5   2.230   3.188   156   18.0  22:25 (  0, 39)  

* 230P/LINEAR

It has not been observed in this apparition yet. It is expected to brighten rapidly, and to be observable at 13.5 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20   0 52.90   -6 39.8   2.054   2.108    78   18.0   2:58 (293, 19)  
June 27   1  6.77   -6  5.4   1.943   2.064    82   17.8   3:01 (296, 23)  

* 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 20  12  2.64  -19 34.3   8.904   9.135    99   17.9  21:03 ( 44, 22)  
June 27  12  3.91  -19 23.8   9.010   9.134    93   17.9  21:04 ( 50, 18)  

* C/2012 LP26 ( Palomar )

Far object. It keeps observable at 18 mag in good condition from summer to autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  20  2.32   -1 49.4   5.719   6.547   141   17.9   2:12 (  0, 53)  
June 27  20  0.80   -1 57.7   5.662   6.545   147   17.9   1:43 (  0, 53)  

* 320P/2015 HC10 ( McNaught )

Now it is 21.7 mag (Apr. 21, T. H. Bressi). It is expected to brighten rapidly up to 15 mag in August. It is observable in good condition in the Southern Hemisphere. It locates somewhat low in the Northern Hemisphere until August.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 20  11 54.21   -8 52.7   0.550   1.189    94   18.3  21:03 ( 53, 29)  
June 27  12  1.88   -8 52.9   0.526   1.138    89   17.9  21:04 ( 57, 25)  

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