Weekly Information about Bright Comets (2013 June 15: North)

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 Updated on June 22, 2013
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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/2012 F6 ( Lemmon )

It approached to the sun down to 0.73 A.U. on Mar. 24, and brightened up to 4.7 mag (Mar. 11, Michael Mattiazzo). Now it is fading. But it is still bright as 7.7 mag (June 16, Carlos Labordena). In the Northern Hemisphere, it keeps observable in good condition while fading gradually. In the Southern Hemisphere, it keeps locating low in the morning sky after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   0 15.53   44  3.4   1.774   1.659    66    8.0   2:58 (240, 47)  
June 22   0  9.57   49  8.5   1.795   1.757    71    8.2   2:59 (233, 53)

* C/2011 L4 ( PanSTARRS )

It passed the perihelion on Mar. 10, and brightened up to 0-1 mag. Now it is fading. But it is still bright as 9.9 mag (June 16, Carlos Labordena). It is observable all night in the Northern Hemisphere. It is not observable in the Southern Hemisphere for a while after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  14 53.04   76 35.7   2.032   2.061    77    8.9  21:15 (180, 49)  
June 22  14 38.02   72 16.4   2.134   2.169    78    9.2  21:04 (176, 53)

* 46P/Wirtanen

It brightens up to 10 mag in summer. But the condition is worst and the comet will be hardly observable in this apparition. In the Northern Hemisphere, it will be observable in autumn when the comet will be fainter than 16 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   4 22.66   18 11.8   2.031   1.103    17   11.3   2:58 (239,-11)  
June 22   4 52.83   19 59.9   2.013   1.078    16   10.9   2:59 (237,-10)

* C/2012 L2 ( LINEAR )

Now it is so bright as 10.5 mag (May 19, Chris Wyatt). In the Southern Hemisphere, it keeps observable for a long time until the comet fades out, although it keeps locating low. It will never be observable again in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   6 30.60   -7 32.2   2.332   1.593    33   12.4  21:02 (102,-30)  
June 22   6 46.00  -10 30.1   2.342   1.626    35   12.5  21:04 (102,-35)

* 246P/2010 V2 ( NEAT )

It brightened up to 12 mag in 2012. It is bright as 14.1 mag still now (May 19, Chris Wyatt). It keeps 13-14 mag until autumn. It locates somewhat low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  19 56.72  -31 15.4   2.066   2.972   147   12.9   2:25 (  0, 24)  
June 22  19 53.34  -32  9.3   2.034   2.982   154   12.9   1:54 (  0, 23)

* C/2006 S3 ( LONEOS )

It brightened up to 11-12 mag in 2012. Now it is bright as 11.0 mag (June 3, Juan Jose Gonzalez). It keeps observable in good condition until July in the Northern Hemisphere, or until September in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  13 28.56  -10 54.8   5.457   6.038   120   13.1  21:02 ( 23, 41)  
June 22  13 24.02  -10 36.3   5.599   6.065   112   13.1  21:04 ( 33, 38)

* C/2010 S1 ( LINEAR )

Now it is 13.8 mag (June 11, Sandor Szabo). It keeps bright at 13-14 mag for a long time until 2014. It keeps observable for a long time in the Northern Hemisphere. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  20 55.18   33 16.8   5.545   5.903   105   13.3   2:58 (287, 85)  
June 22  20 48.93   33 13.1   5.466   5.904   110   13.3   2:49 (  0, 88)

* C/2012 V2 ( LINEAR )

It brightened up to 14.4 mag until April (Apr. 13, Sandor Szabo). It will brighten up to 12 mag from summer to autumn. Now it is not observable. In the Southern Hemisphere, it will become observable in August, then it keeps observable while fading gradually. It will never be observable again in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   5 19.72   27 19.7   2.709   1.699     5   13.5   2:58 (222,-13)  
June 22   5 36.25   25  5.8   2.658   1.652     6   13.3   2:59 (226,-13)

* 29P/Schwassmann-Wachmann 1

Now it is 12.2 mag and visible visually (June 15, Con Stoitsis). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  13 35.45  -21  9.5   5.569   6.212   125   13.7  21:02 ( 17, 32)  
June 22  13 35.00  -20 56.4   5.659   6.210   118   13.7  21:04 ( 25, 30)

* C/2012 S1 ( ISON )

It is expected to be a great comet in 2013 autumn when the comet approaches to the sun down to only 0.01 A.U. It keeps visible with naked eyes from November to January, and can be extremely bright as Venus or more at the highlight. However, the brightening has declined at 15.5 mag from January through May in 2013. Now it is not observable. The condition is excellent in the Northern Hemisphere. It will appear in the morning sky again in late August, then it keeps observable almost all through the period of brightening, at the highlight, and of fading. The condition is not good in the Southern Hemisphere. It is not observable at all the latter part of the highlight, and it keeps low all through the period. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   7 10.60   27 37.7   4.238   3.321    22   13.8  21:02 (124,  0)  
June 22   7 16.90   27 17.9   4.184   3.227    17   13.7  21:04 (128, -4)

* C/2013 E2 ( Iwamoto )

Now it is bright as 13.5 mag (June 12, Sandor Szabo). It keeps locating in the morning sky for a long time after this. I will keep the current brightness for a long time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   0 37.52   11 41.0   2.050   1.966    70   14.0   2:58 (277, 30)  
June 22   0 47.62   11 55.0   2.040   2.031    75   14.1   2:59 (279, 34)

* C/2011 J2 ( LINEAR )

Now it is 14.5 mag (June 11, Sandor Szabo). It keeps 13 mag and observable in good condition in the Northern Hemisphere for a long time from 2013 to 2014. But it locates low in July and August. In the Southern Hemisphere, it is not observable until 2014 autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   9  1.91   50 14.1   4.473   3.873    48   14.1  21:02 (133, 30)  
June 22   9  4.50   50 16.1   4.508   3.845    44   14.1  21:04 (135, 26)

* C/2011 R1 ( McNaught )

It kept bright as 11-13 mag for a long time from 2012 summer to 2013 summer. It will be fading after this. Now it is 14.3 mag (June 11, Sandor Szabo). In the Northern Hemisphere, it keeps observable for a long time until the comet fades out. In the Southern Hemisphere, it becomes low in late August, then it will be hardly observable. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  13 24.18   20  0.3   2.989   3.403   105   14.2  21:02 ( 52, 68)  
June 22  13 20.54   20 28.4   3.162   3.461    98   14.4  21:04 ( 65, 62)

* (596) Scheila

Big asteroid discovered in 1906. It suddenly showed the cometary activity on Dec. 11, 2010, probably due to an impact of a small object. It has already turned to be stellar. It locates high in the Southern Hemisphere. But it still locates very low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   0 36.73  -12  5.3   2.886   2.899    80   14.5   2:58 (297, 15)  
June 22   0 43.24  -11 53.5   2.807   2.911    85   14.5   2:59 (301, 19)

* 117P/Helin-Roman-Alu 1

Now it is 14.0 mag (June 3, Chris Wyatt). It keeps bright as 13-14 mag for a long time from 2013 to 2014. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  14  5.56  -10  9.0   2.616   3.348   128   14.5  21:02 ( 11, 44)  
June 22  14  4.77  -10 23.4   2.682   3.335   122   14.6  21:04 ( 21, 42)

* C/2012 K1 ( PanSTARRS )

Now it is 14.2 mag and visible visually (June 11, Sandor Szabo). It is expected to brighten up to 5-6 mag in 2014 autumn. In 2013, it keeps observable in good condition until autumn when it brigthens up to 13-14 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  16 30.87   21 39.5   4.754   5.492   132   14.8  22:54 (  0, 77)  
June 22  16 23.33   21 43.8   4.731   5.426   128   14.7  22:19 (  0, 77)

* C/2009 F4 ( McNaught )

Now it is 14.1 mag (Mar. 5, Hidetaka Sato). It will be fading slowly after this. But it keeps 15 mag in 2013. It becomes temporarily low in May, but will be observable in good condition again after June in the Southern Hemisphere. It is not observable now in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   3 53.68  -24 12.5   7.229   6.672    53   15.1   2:58 (280,-30)  
June 22   3 57.01  -23 55.8   7.210   6.700    56   15.1   2:59 (283,-25)

* C/2012 K6 ( McNaught )

Now it is 14.0 mag and visible visually (June 11, Sandor Szabo). It reaches up to 14-15 mag from spring to summer. It is observable in excellent condition in the Southern Hemisphere. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  13  1.91  -21  2.8   2.766   3.361   117   15.1  21:02 ( 26, 30)  
June 22  12 56.43  -18 28.9   2.892   3.366   109   15.2  21:04 ( 36, 28)

* C/2012 S3 ( PanSTARRS )

Now it is 15.3 mag (June 12, Catalina Sky Survey). It is expected to brighten up to 14 mag in July and August. In the Southern Hemisphere, it keeps observable for a long time until the comet fades out. It keeps observable in good condition until September also in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  21 52.20   18 18.4   2.009   2.466   104   15.4   2:58 (307, 65)  
June 22  21 43.48   16 30.3   1.858   2.440   112   15.2   2:59 (329, 69)

* C/2011 F1 ( LINEAR )

It brightened up to 9.0 mag in 2012 autumn (Nov. 4, Juan Jose Gonzalez). However, it faded out unexpectedly around the perihelion passage. Now it is fainter than originally predicted by 4-5 mag. Now it is 15.2 mag (June 3, Hidetaka Sato). In the Southern Hemisphere, it keeps observable in good condition while fading slowly after this. In the Northern Hemisphere, it will not be observable after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   2 42.88  -42 27.4   2.702   2.658    76   15.3   2:58 (306,-25)  
June 22   2 56.64  -42 39.4   2.726   2.717    78   15.5   2:59 (307,-22)

* 26P/Grigg-Skjellerup

It tends to brighten very rapidly near the perihelion. It was so faint as 17.8 mag on May 25, but it brightened rapidly up to 15.5 mag on June 8 (Hidetaka Sato). It is expected to reach up to 12 mag in the evening sky from July to August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   9 26.81    7 43.3   1.257   1.121    57   16.8  21:02 ( 89, 15)  
June 22   9 54.23    7 57.6   1.239   1.102    57   15.4  21:04 ( 90, 15)

* C/2013 G6 ( Lemmon )

It brightened very rapidly. Now it is so bright as 15.3 mag (June 3, Toshiyuki Takahashi). It keeps observable in good condition for a while in the Southern Hemipshere. It will be unobservable in late June in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  11 51.67  -18 37.6   1.655   2.105   101   15.5  21:02 ( 43, 23)  
June 22  11 37.01  -18 41.3   1.792   2.087    91   15.6  21:04 ( 52, 17)

* C/2009 P1 ( Garradd )

It kept as bright as 6-7 mag for a long time from 2011 summer to 2012 spring. Now it is fading. But it is bright as 15.9 mag still now (Apr. 13, Ken-ichi Kadota). Now it is not observable in the Northern Hemisphere. In July, it will be too low to observe also in the Southern Hemipshere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   8 19.01   -7 18.7   6.708   6.116    50   15.6  21:02 ( 87, -8)  
June 22   8 21.68   -7 29.2   6.838   6.175    45   15.7  21:04 ( 90,-14)

* 63P/Wild 1

Emmanuel Jehin detected the small outburst on May 15. Now it is bright and visible visually at 12.7 mag (June 1, Carlos Labordena). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  10 57.62   -0 22.0   1.933   2.054    81   15.8  21:02 ( 67, 28)  
June 22  11  8.76   -2 20.6   2.021   2.076    78   16.0  21:04 ( 69, 23)

* C/2013 F3 ( McNaught )

Now it is 17.2 mag (Apr. 11, Hidetaka Sato). It keeps 16 mag and observable in good condition until July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  18  9.24   22 23.5   1.443   2.265   133   15.8   0:38 (  0, 77)  
June 22  17 50.82   26 34.8   1.485   2.275   129   15.9  23:45 (  0, 82)

* C/2012 V1 ( PanSTARRS )

It is expected to brighten rapidly and to be observable at 15 mag in good condition from July to August. But actually, it is not detected, fainter than 20 mag (May 19, Hidetaka Sato). It can have been already disintegrated. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  23 50.44   22 27.5   2.108   2.135    77   16.4   2:58 (272, 45)  
June 22  23 39.30   22 50.9   1.931   2.119    86   16.2   2:59 (278, 53)

* C/2013 G5 ( Catalina )

It will approach to the Sun down to 0.9 A.U., and to the Earth down to 0.4 A.U. in September. Then it is expected to brighten up to 11-12 mag. Now it is 17.2 mag (May 29, Taras Prystavski). It looks diffuse. In the Northern Hemisphere, it keeps observable in good condition until mid September while brightening rapidly. In the Southern Hemisphre, it keeps locating low for a while. However, it will getting higher after August, and it keeps observable in good condition after that, until the comet fades out. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  13 32.84   51 41.2   1.282   1.614    88   16.6  21:02 (150, 70)  
June 22  13 30.16   50 36.8   1.235   1.527    84   16.3  21:04 (139, 67)

* P/2012 B1 ( PanSTARRS )

Now it is 14.6 mag and visible visually (June 11, Sandor Szabo). It will be observable at 14-16 mag for a long time from 2013 to 2014. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  11 54.96    4  4.2   3.636   3.831    93   16.3  21:02 ( 60, 41)  
June 22  11 58.49    3 26.7   3.733   3.829    87   16.4  21:04 ( 65, 36)

* P/2012 F2 ( PanSTARRS )

Now it is 16.5 mag (Apr. 14, J. F. Hernandez). It keeps observable in good condition at 17 mag from spring to summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  18 45.62   -6 20.9   1.982   2.938   155   16.3   1:14 (  0, 49)  
June 22  18 41.93   -5 50.7   1.972   2.947   160   16.3   0:42 (  0, 49)

* 184P/Lovas 2

It was predicted to be 17 mag in late May. But actually, it was much fainter, 19-20 mag (May 26, Damian Peach). It was expected to be bright as 16 mag and observable in good condition from summer to autumn. But it can be 18-19 mag at best. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   0 21.08    3 39.3   1.312   1.477    77   16.8   2:58 (287, 29)  
June 22   0 42.49    6  4.8   1.263   1.453    78   16.6   2:59 (286, 31)

* C/2011 O1 ( LINEAR )

Now it is 16.1 mag (Mar. 4, Hidetaka Sato). In the Southern Hemisphere, it keeps observable in good condition for a long time while fading gradually. It is not observable at all in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   4 44.91  -42 24.2   4.973   4.664    66   16.7   2:58 (297,-46)  
June 22   4 53.20  -41 55.1   4.994   4.697    67   16.7   2:59 (298,-42)

* 257P/2012 F4 ( Catalina )

Now it is 17.1 mag (June 8, Ken-ichi Kadota). It is expected to be observable at 16 mag in good condition in summer and autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  23 33.70   17  7.9   1.996   2.131    83   16.8   2:58 (282, 46)  
June 22  23 43.71   18 18.9   1.931   2.133    86   16.7   2:59 (284, 50)

* C/2013 J2 ( McNaught )

Now it is 17.6 mag (May 9, Siding Spring Survey). It is observable at 16.5 mag in good condition from July to September. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  21 34.99  -10  6.2   1.734   2.420   121   17.0   2:58 (338, 42)  
June 22  21 38.39   -8 37.3   1.662   2.408   126   16.9   2:59 (346, 45)

* P/2005 L1 ( McNaught )

First return of a new periodic comet discovered in 2005. It will be observable at 17 mag for a long time from 2013 to 2014. However, it has not been recovered yet. Not it is fainter than 20 mag (May 29, Jean-Francois Soulier). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  16 57.08  -12 48.1   2.242   3.238   166   17.0  23:21 (  0, 42)  
June 22  16 52.48  -12 53.0   2.256   3.231   160   17.0  22:49 (  0, 42)

* 154P/Brewington

Not observed yet in this apparition. It will brighten very rapidly near the perihelion passage. It is expected to reach up to 10 mag from autumn to winter. In the Northern Hemipshere, it keeps observable in excellent condition until the comet fades out. In the Southern Hemisphere, it keeps observable in good condition within 2013, but it will not be observable in 2014. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  22 46.02  -21  5.5   1.943   2.463   108   17.2   2:58 (325, 25)  
June 22  22 51.43  -20 28.2   1.819   2.414   113   17.0   2:59 (330, 29)

* C/2012 C1 ( McNaught )

Now it is 17.4 mag (June 15, K. Hills). It keeps 17 mag for a long time from 2012 to 2013, and will be observable in good condition in the Southern Hemisphere. It is not observable at all in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   2 18.53  -64 51.2   4.737   4.944    95   17.3   2:58 (331,-30)  
June 22   2 18.07  -66  0.5   4.694   4.955    98   17.3   2:59 (333,-28)

* P/1998 Y2 ( Li )

First return of a new periodic comet discovered in 1998. It is expected to be observable at 15.5 mag in good condition from 2013 autumn to early 2014. It locates high in the Southern Hemisphere. But it has not been recovered yet. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15   1  5.66  -18 15.0   3.203   3.142    77   17.5   2:58 (297,  6)  
June 22   1 14.46  -18  8.7   3.092   3.111    81   17.4   2:59 (300, 10)

* C/2013 G2 ( McNaught )

Now it is 16.7 mag (June 8, Ken-ichi Kadota). It will be fading after this. It locates low in the Northern Hempshere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  18 40.37  -23 51.4   2.057   3.048   164   17.4   1:09 (  0, 31)  
June 22  18 24.48  -21 49.3   2.088   3.102   174   17.5   0:26 (  0, 33)

* 152P/Helin-Lawrence

It brightened up to 15.5 mag in 2012 summer. Although it has already passed the perihelion, it tends to become brightest after the perihelion passage. Now it is 18.1 mag, fainter than this ephemeris (Apr. 11, Hidetaka Sato). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  22 37.09  -17 40.8   3.112   3.580   109   17.6   2:58 (325, 29)  
June 22  22 38.83  -17 56.2   3.037   3.597   115   17.5   2:59 (332, 32)

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

It has brightened in outburst up to 14 mag twice, in 2006 January and 2011 May. It will pass the perihelion in 2015. 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 15  19 13.08  -17 36.0   5.686   6.627   155   17.7   1:41 (  0, 37)  
June 22  19 10.64  -17 39.1   5.633   6.612   163   17.6   1:11 (  0, 37)

* C/2012 Q1 ( Kowalski )

Because it is a very distant comet, it will be fading very slowly. It keeps observable at 17.5 mag in 2013. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  23 23.95   11 21.0   9.719   9.731    87   17.8   2:58 (290, 44)  
June 22  23 24.73   11 23.8   9.615   9.738    93   17.8   2:59 (296, 49)

* C/2013 G7 ( McNaught )

Now it is 17.4 mag (June 8, Catalina Sky Survey). It keeps 17-18 mag for a long time from 2013 to 2014. It keeps observable in good condition in the Southern Hemisphere. In the Northern Hemisphere, it is only observable until 2012 July. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  14 25.81  -17 35.5   4.382   5.160   135   17.8  21:02 (  4, 37)  
June 22  14 19.43  -17 56.8   4.450   5.137   127   17.8  21:04 ( 14, 36)

* C/2011 KP36 ( Spacewatch )

Now it is 17.7 mag (June 10, P. Lindner). It is expected to brighten up to 14 mag from 2015 to 2016. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  17 51.87   -2  3.7   7.784   8.736   158   17.9   0:20 (  0, 53)  
June 22  17 49.60   -2  2.7   7.748   8.701   158   17.8  23:46 (  0, 53)

* C/2008 S3 ( Boattini )

It has been observed at 17 mag for a long time from 2009 to 2012. It is also observable at 18 mag in good condition in 2013. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  22 21.17    8 42.1   8.880   9.159   102   17.9   2:58 (310, 54)  
June 22  22 18.64    8 42.9   8.787   9.179   109   17.8   2:59 (320, 58)

* P/2013 G1 ( Kowalski )

Now it is 17.6 mag (June 3, Mt. Lemmon Survey). It keeps 18 mag for a long time from 2013 to 2014. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  15 10.27  -15 30.1   2.675   3.559   145   17.8  21:35 (  0, 39)  
June 22  15  8.56  -15 16.8   2.719   3.543   138   17.9  21:05 (  0, 40)

* C/2013 J3 ( McNaught )

Now it is 17.2 mag (May 10, Siding Spring Survey). Now it is brightest, and will be fading after this. It locates low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  12 28.29  -24 38.5   3.621   4.100   111   17.9  21:02 ( 32, 23)  
June 22  12 27.14  -22 36.9   3.747   4.114   104   18.0  21:04 ( 40, 21)

* 17P/Holmes

It brightened up to 2 mag by unusual major outburst in 2007. It was observed around aphelion at 22 mag. It will return in 2014. It will be 14 mag at best by normal prediction. Now it is 17.0 mag, a bit brighter than this ephemeris (June 13, A. Maury, J. F. Soulier). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  17 29.87  -49  6.5   1.959   2.908   154   18.1  23:53 (  0,  6)  
June 22  17 21.34  -48 45.7   1.932   2.877   153   18.1  23:17 (  0,  6)

* 91P/Russell 3

It was predicted to be 17 mag. But actually, it is much fainter, 19.0 mag (June 3, Hidetaka Sato). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  18 13.63  -14 53.2   1.693   2.694   167   18.4   0:42 (  0, 40)  
June 22  18  8.39  -14 15.3   1.696   2.704   170   18.5   0:09 (  0, 41)

* 98P/Takamizawa

It was expected to be bright as 14 mag and observable in excellent condition in summer. But actually, it is so faint as 17.8 mag, much fainter than expected by 4 mag (June 12, Katsumi Yoshimoto). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
June 15  14 55.85    0 21.0   0.876   1.749   135   18.6  21:20 (  0, 55)  
June 22  14 56.77   -1 10.9   0.893   1.730   129   18.5  21:04 (  4, 54)

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