Weekly Information about Bright Comets (2016 May 28: North)

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 Updated on May 29, 2016
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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/2013 X1 ( PanSTARRS )

Now it is 7.2 mag (May 25, Thomas Lehmann). It will pass close to the earth from spring to summer, and it is expected to brighten up to 6 mag. In the Southern Hemisphere, it keeps observable in excellent condition after this. In the Northern Hemisphere, it locates low in the south. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22 56.10  -13 53.8   1.060   1.427    86    6.7   3:06 (305, 21)  
June  4  22 33.26  -20 25.3   0.887   1.470   101    6.4   3:01 (318, 23)

* 252P/LINEAR

It passed only 0.036 a.u. from the earth on Mar. 21-22, and brightened up to 3.9 mag (Mar. 21, Thomas Lehmann). It kept brightening even after the perihelion passage. However, it is fading now. It has already faded down to 9.4 mag (May 27, Marco Goiato). It keeps observable in excellent condition for a while after this both in the Northern Hemisphere and Southern Hemisphere. It may fade out very rapidly. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  16 49.16    7 29.6   0.430   1.403   150   10.2   0:27 (  0, 63)  
June  4  16 43.46    6 16.9   0.491   1.464   151   11.0  23:49 (  0, 61)

* C/2014 S2 ( PanSTARRS )

Now it is 10.7 mag (May 26, Thomas Lehmann). It will be fading slowly after this. It is observable in excellent condition in the Northern Hemisphere. It is observable in the evening sky also in the Southern Hemisphere until August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11  0.08   36 37.9   2.769   2.863    84   10.9  20:48 (103, 63)  
June  4  11  2.53   33 45.0   2.906   2.915    80   11.1  20:55 ( 99, 56)

* 9P/Tempel 1

Now it is 12.8 mag (May 12, Tsutomu Seki). Brightening very rapidly, but it is fainter than this ephemeris. It is expected to be observable at 11 mag in good condition until summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 50.04   12 31.2   1.088   1.674   105   11.8  20:48 ( 45, 60)  
June  4  11 56.79   10 26.8   1.116   1.649   101   11.7  20:55 ( 52, 55)

* 81P/Wild 2

Now it is 10.9 mag (May 24, Thomas Lehmann). It keeps 11 mag until summer. In the Northern Hemisphere, it will be getting lower after this, and will be unobservable in June. It locates somewhat low in the Southern Hemisphere, but it keeps observable until August. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   8  2.05   20 57.2   2.111   1.678    51   11.7  20:48 (101, 22)  
June  4   8 20.81   20  8.6   2.132   1.657    49   11.7  20:55 (102, 18)

* C/2015 WZ ( PanSTARRS )

Now it is very bright as 12.1 mag (May 26, Thomas Lehmann). In the Northern Hemisphere, it is observable at 12 mag in excellent condition until June. It locates very low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22  5.72   44 57.6   1.356   1.506    77   12.1   3:06 (240, 58)  
June  4  21 24.12   49 18.1   1.246   1.549    85   12.2   3:01 (223, 68)

* C/2014 W2 ( PanSTARRS )

Now it is 12.7 mag (May 26, Thomas Lehmann). It keeps 12-13 mag for a long time from 2015 autumn to 2016 summer. In the Northern Hemispehre, it keeps observable in good condition for a long time. It keeps unobservable until July in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  16 52.21   69 53.8   2.631   2.794    88   12.3   0:31 (180, 55)  
June  4  16 23.41   67 45.6   2.633   2.816    89   12.4  23:27 (180, 57)

* C/2013 US10 ( Catalina )

Now it is 12.5 mag (May 12, Hiroshi Abe). It brightened up to 6 mag from autumn to winter. Now it is fading. It is not observable after this in the Southern Hemisphere. It will be extremely low from May to June also in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5 13.30   46 38.1   3.941   3.077    27   12.9  20:48 (143,  8)  
June  4   5 19.36   46 38.6   4.050   3.160    24   13.0  20:55 (147,  5)

* 43P/Wolf-Harrington

It will brighten up to 11 mag from summer to autumn. However, it was faint as 18.2 mag in February (Feb. 17, Alexander Baransky), fainter than this ephemeris by 2 mag. It will appear in the morning sky soon, but it keeps low for some time. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   2 23.87   22 14.7   2.480   1.642    26   13.1   3:06 (244,  2)  
June  4   2 45.69   23 21.6   2.421   1.602    28   12.9   3:01 (243,  3)

* 29P/Schwassmann-Wachmann 1

It is observable in excellent condition in the Southern Hemisphere. Now it is faint as 16.9 mag (May 18, J. Nicolas, F. Kugel, A. Klotz, C. Rinner, J.-F. Soulier). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19 54.23  -25 19.3   5.219   5.934   131   13.4   3:06 (353, 29)  
June  4  19 52.59  -25 22.6   5.138   5.932   138   13.4   3:01 (  0, 30)

* 116P/Wild 4

Now it is 13.1 mag (May 12, Hiroshi Abe). It keeps 13 mag for a while. It is observable in excellent condition 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)  
May  28  15 29.71  -23  2.7   1.386   2.387   168   13.7  23:04 (  0, 32)  
June  4  15 25.08  -22 52.0   1.425   2.406   160   13.8  22:32 (  0, 32)

* 53P/Van Biesbroeck

Now it is 14.6 mag (May 11, Hiroshi Abe). It will be observable at 14 mag in good condition from spring to summer. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  21  4.34  -11 22.8   1.875   2.438   111   14.2   3:06 (329, 38)  
June  4  21  8.99  -11  7.1   1.808   2.444   117   14.2   3:01 (335, 40)

* 118P/Shoemaker-Levy 4

It is not observable now. It will be observable at 16.5 mag in September in the Northern Hemisphere, or in November in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5 15.79   17 49.1   2.957   1.986    13   14.2  20:48 (122,-12)  
June  4   5 33.39   18 13.8   2.968   1.983    11   14.2  20:55 (125,-14)

* 77P/Longmore

Now it is bright as 13.0 mag (May 6, Marco Goiato). In the Northern Hemisphere, it will be getting lower gradually after this, and it will be unobservable in late July. In the Southern Hemisphere, it keeps observable in good condition until autumn. But it will be fading slowly after this. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  12 30.75  -17  9.6   1.596   2.340   125   14.2  20:48 ( 13, 37)  
June  4  12 30.97  -17 56.7   1.666   2.342   119   14.3  20:55 ( 22, 34)

* C/2011 KP36 ( Spacewatch )

Now it is 15.1 mag (Jan. 2, Ken-ichi Kadota). 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)  
May  28   0 17.50    1 39.2   5.273   4.883    62   14.5   3:06 (279, 15)  
June  4   0 22.79    1 55.6   5.179   4.884    67   14.5   3:01 (282, 19)

* 146P/Shoemaker-LINEAR

Now it is 15.9 mag (May 4, Hidetaka Sato), brighter than originally predicted. It will brighten up to 14 mag in summer. In the Southern Hemisphere, it keeps observable until winter, but it locates somewhat low. In the Northern Hemisphere, it is not observable now. It will appear in the morning sky in July, then it will be observable in excellent condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   1 39.33   -6 49.6   1.942   1.480    48   15.0   3:06 (274, -6)  
June  4   1 59.77   -4 12.2   1.908   1.461    49   14.8   3:01 (272, -4)

* C/2015 TQ209 ( LINEAR )

It will brighten up to 13 mag in summer. But it keeps unobservable for a long time. It will appear in the morning sky in December, when the comet will be fainter than 15 mag. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5  8.89   18  4.4   2.890   1.911    11   15.1  20:48 (123,-13)  
June  4   5 27.18   18  8.7   2.840   1.849     9   14.9  20:55 (126,-15)

* C/2015 T4 ( PanSTARRS )

Now it is bright as 14.9 mag (May 4, Hidetaka Sato). It keeps 15 mag until autumn. In the Southern Hemisphere, it keeps observable for a long time. It will be unobservable after this in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   5 13.76  -36 37.2   2.654   2.309    59   15.1  20:48 ( 69,-42)  
June  4   5 28.54  -38 14.0   2.609   2.302    61   15.0  20:55 ( 69,-46)

* C/2015 V2 ( Johnson )

Now it is 14.8 mag (May 19, Artyom Novichonok). It is expected to brighten up to 7 mag in 2017 summer. In the Northern Hemisphere, it becomes low temporarily in summer, but it keeps observable in good condition until the highlight while the comet will be brightening. In the Southern Hemisphere, it is not observable until early 2017. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   7 32.41   57  9.6   5.274   4.685    49   15.3  20:48 (141, 31)  
June  4   7 41.82   56 42.0   5.261   4.622    46   15.3  20:55 (141, 28)

* 104P/Kowal 2

It brightened rapidly up to 11.0 mag in spring (Apr. 9, C. Rinner, F. Kugel,　A. Klotz, J. Nicolas). It is fading now. In the Northern Hemisphere, it will be unobservable soon. It keeps observable until July in the Southern Hemisphere, but it keeps extremely low. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   6 54.83   16 10.4   2.069   1.398    36   15.3  20:48 (106,  6)  
June  4   7 19.61   15 19.3   2.131   1.444    36   15.6  20:55 (106,  3)

* C/2014 W11 ( PanSTARRS )

It brightened very rapidly in 2015 spring, and reached up to 13.8 mag (May 11, Sandor Szabo). It is bright as 14.4 mag still now (May 12, Yasukazu Ikari). It is observable in excellent condition 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)  
May  28  13 41.93  -27  8.4   3.387   4.246   143   15.6  21:16 (  0, 28)  
June  4  13 40.79  -26 39.2   3.474   4.275   137   15.7  20:55 (  2, 28)

* C/2015 ER61 ( PanSTARRS )

Now it is 16.3 mag (May 20, Artyom Novichonok). It is expected to brighten up to 7 mag in 2017 spring. But it locates somewhat low at the high light. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11  6.11   -0 16.1   4.309   4.607   100   16.3  20:48 ( 47, 44)  
June  4  11  6.62   -0  8.4   4.349   4.537    94   16.3  20:55 ( 56, 39)

* 65P/Gunn

Now it is 16.3 mag (May 12, Yasukazu Ikari). It will be getting lower after this, and will be unobservable in August. It will brighten up to 14 mag in 2017. The perihelion distance increases from 2.4 a.u. to 2.9 a.u. in this apparition, and the comet will not brighten as before. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  11 22.35   13 29.9   3.407   3.704    99   16.3  20:48 ( 56, 57)  
June  4  11 24.42   12 55.3   3.491   3.688    93   16.3  20:55 ( 64, 51)

* C/2014 Q2 ( Lovejoy )

It brightened up to 3.7 mag and became a naked eye comet in mid January in 2015 (Jan. 13, Marek Biely). Now it is fading. It has already faded down to 16.0 mag (May 7, Yuji Ohshima). In the Northern Hemisphere, it keeps observable for a long time until the comet fades out. It locates somewhat low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18  4.34   27  1.8   5.111   5.757   125   16.4   1:42 (  0, 82)  
June  4  17 58.88   26 56.2   5.142   5.819   127   16.5   1:09 (  0, 82)

* C/2015 B2 ( PanSTARRS )

Now it is 17.0 mag (Feb. 7, iTelescope Observatory, Siding Spring). It keeps 16.5 mag for a long time in 2016, and it will be observable in excellent condition in the Southern Hemisphere. It is hardly observable in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   3 40.18  -36 57.8   3.781   3.376    59   16.7   3:06 (290,-44)  
June  4   3 41.84  -36 49.0   3.748   3.380    61   16.7   3:01 (291,-40)

* C/2015 O1 ( PanSTARRS )

Now it is 17.2 mag (May 8, Space Surveillance Telescope, Atom Site). It will be observable at 13 mag for a long time from 2017 to 2018. In 2016, it keeps observable at 16-17 mag in good condition until autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  20 11.16  -12 28.6   5.845   6.471   124   16.7   3:06 (346, 41)  
June  4  20  6.81  -12  9.7   5.706   6.427   131   16.7   3:01 (355, 43)

* C/2016 B1 ( NEOWISE )

Now it is bright as 15.9 mag (Apr. 9, Hidetaka Sato). It keeps 16 mag for a long time from 2016 to 2017. In 2016, it is observable in excellent condition in the Southern Hemisphere, but it locates extremely low in the Northern Hemispehre. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  12  0.63  -34 16.3   3.037   3.678   122   16.7  20:48 ( 16, 19)  
June  4  12  3.59  -32 32.1   3.072   3.647   117   16.7  20:55 ( 23, 18)

* C/2014 OE4 ( PanSTARRS )

Now it is 16.5 mag (May 11, D. Buczynski). It keeps 16.5 mag from 2016 to 2017. It is observable in good condition in the Northern Hemisphere. In the Southern Hemisphere, it locates low in 2016, and it is not observable in 2017. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  17  9.01   32 34.2   5.757   6.389   124   16.7   0:47 (  0, 88)  
June  4  17  4.66   33 23.3   5.755   6.379   124   16.7   0:15 (  0, 88)

* 100P/Hartley 1

It brightened rapidly up to 15.1 mag in May (May 12, Yuji Ohshima). It will fade out rapidly after this. 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)  
May  28  14 59.31  -37 40.0   1.089   2.057   156   16.7  22:33 (  0, 17)  
June  4  14 51.08  -38 43.2   1.127   2.069   150   16.9  21:57 (  0, 16)

* 237P/LINEAR

It brightened rapidly up to 15.6 mag (May 13, iTelescope Observatory, Siding Spring). It keeps observable at 16 mag until autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  12 52.92  -16 36.0   1.457   2.255   130   16.7  20:48 (  6, 38)  
June  4  12 54.76  -15 34.8   1.493   2.231   124   16.7  20:55 ( 16, 38)

* C/2015 Y1 ( LINEAR )

It brightened rapidly, and reached up to 15.5 mag (Feb. 11, Yasukazu Ikari). Now it is fading. It has already faded down to 16.5 mag (May 9, D. Buczynski). It keeps observable until August when the comet becomes fainter than 18 mag in the Northern Hemisphere. It will be unobservable soon in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   8 53.36   42 24.6   2.868   2.518    59   16.8  20:48 (119, 40)  
June  4   9  4.53   43  4.4   2.944   2.523    56   16.9  20:55 (121, 36)

* C/2014 R3 ( PanSTARRS )

Now it is 16.9 mag (May 7, K. Sarneczky). It brightened rapidly, and became brighter than originally expected. It keeps 17 mag until 2017. It is observable in excellent condition in the Northern Hemisphere. It is not observable in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  14  7.89   74  9.1   7.361   7.290    82   16.8  21:40 (180, 51)  
June  4  13 51.98   73 22.1   7.397   7.287    79   16.8  20:57 (180, 52)

* C/2015 LC2 ( PanSTARRS )

Now it is 16.4 mag (May 10, Catalina Sky Survey). It keeps brightening even after the perihelion passage. It keeps observable at 17 mag in good condition until autumn. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  14 47.88    5 10.0   5.648   6.504   145   16.9  22:22 (  0, 60)  
June  4  14 44.38    5 52.9   5.731   6.525   138   16.9  21:51 (  0, 61)

* C/2014 A4 ( SONEAR )

It brightened up to 15 mag from late 2014 to early 2016. Now it is fading slowly. In the Northern Hemisphere, it will be observable at 17 mag in autumn in good condition. It locates extremely low in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   0 23.72   32 22.6   5.264   4.727    53   16.9   3:06 (249, 30)  
June  4   0 22.80   33 34.9   5.200   4.754    58   16.9   3:01 (250, 35)

* 219P/LINEAR

Now it is 19.3 mag (May 4, Hidetaka Sato). It will brighten up to 16.5 mag in summer and will be observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 16.17  -13 50.8   1.971   2.902   151   17.4   1:54 (  0, 41)  
June  4  18 12.17  -13 17.0   1.913   2.879   158   17.2   1:23 (  0, 42)

* C/2012 F3 ( PanSTARRS )

It brightened up to 13-14 mag from 2014 to 2015. Now it is fading. It has already faded down to 18.1 mag (Apr. 23, Slooh.com Canary Islands Observatory). It will be observable at 17 mag in 2016. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 16.43   -3  9.9   5.185   5.074    78   17.2   3:06 (293, 24)  
June  4  23 19.50   -2 57.3   5.122   5.117    84   17.2   3:01 (297, 28)

* P/2008 J3 ( McNaught )

First return of a new periodic comet which brightened up to 16.5 mag in 2008. The condition of this apparition is very good. It is expected to brighten up to 15.5 mag in autumn and will be observable in good condition. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  23 42.00  -23 18.2   2.583   2.625    81   17.4   3:06 (304,  6)  
June  4  23 50.51  -22 29.4   2.481   2.603    85   17.3   3:01 (306,  9)

* C/2010 S1 ( LINEAR )

It was observed as bright as 13-14 mag for a long time from 2011 to 2014. Now it is fading. It is observable in excellent condition in the Southern Hemisphere. It locates extremely low in the Northern Hemisphere. No observations have been reported since August, 2015. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  17 46.05  -36 27.7   8.556   9.491   156   17.3   1:24 (  0, 19)  
June  4  17 41.34  -36 43.1   8.556   9.525   161   17.3   0:52 (  0, 18)

* 188P/LINEAR-Mueller

It is expected to brighten up to 16 mag and observable in good condition in autumn. However, it is so faint as 19.7 mag now (Apr. 16, A. Maury, J.-B. de Vanssay, J.-G. Bosch, J.-F. Soulier). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  22 54.30  -14 28.6   2.980   3.107    87   17.5   3:06 (306, 21)  
June  4  23  0.11  -13 54.3   2.863   3.083    92   17.4   3:01 (309, 24)

* 180P/NEAT

Now it is 16.8 mag (May 10, Catalina Sky Survey). It will be fading after this, and will be fainter than 18 mag soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  14 33.00    1 39.1   1.813   2.707   145   17.4  22:07 (  0, 57)  
June  4  14 29.77    0 49.9   1.877   2.724   138   17.6  21:36 (  0, 56)

* C/2006 S3 ( LONEOS )

It brightened up to 11-12 mag in 2012. It has already faded down to 18.3 mag (May 1, J. Oey, P. Camilleri, H. Williams). It will be unobservable in June in the Northern Hemisphere, or in July in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10 20.77   -2 10.8  11.440  11.502    90   17.4  20:48 ( 57, 35)  
June  4  10 20.44   -2  2.5  11.597  11.539    84   17.5  20:55 ( 64, 29)

* C/2015 H2 ( PanSTARRS )

Now it is 18.0 mag (Apr. 12, A. Maury, J.-B. de Vanssay, J.-G. Bosch, J.-F. Soulier). It keeps observable at 17.5 mag in good condition from spring to autumn in the Southern Hemisphere. It is not observable in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  18 12.52  -63 59.4   4.285   5.037   133   17.7   1:51 (  0, -9)  
June  4  18  8.31  -64 17.3   4.248   5.028   136   17.7   1:19 (  0, -9)

* P/2006 F1 ( Kowalski )

Although it was bright as 17 mag at the discovery in 2006, it faded out before the perihelion passage in 2008, and it became lost. Now it is fainter than 22 mag (June 15, 2015, Erwin Schwab, Marco Micheli). 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  15 41.31    6 36.9   3.573   4.482   150   17.8  23:15 (  0, 62)  
June  4  15 37.50    6 30.6   3.596   4.475   146   17.8  22:44 (  0, 61)

* C/2013 C2 ( Tenagra )

Very far object. Outburst occured on Feb. 20, 2015, and it brightened up to 15 mag. Now it is 16.7 mag (Apr. 4, Hidetaka Sato). 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)  
May  28  13 11.73  -23 28.7   8.424   9.187   136   17.8  20:48 (  1, 31)  
June  4  13 11.05  -23  9.9   8.503   9.190   130   17.8  20:55 ( 10, 31)

* C/2016 J2 ( Denneau )

New comet. It was bright as 15.6 mag in early May (May 6, Hidetaka Sato). It goes away from the earth rapidly, and it will be fainter than 18 mag soon. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  10 10.84    2 14.3   1.352   1.647    87   17.8  20:48 ( 63, 37)  
June  4  10 13.82    6 44.9   1.547   1.686    79   18.2  20:55 ( 73, 34)

* 47P/Ashbrook-Jackson

Now it is 18.5 mag (Apr. 14, Hidetaka Sato). It will brighten up to 16 mag and will be observable in good condition in 2017. In 2016, it is observable in excellent condition in the Southern Hemisphere, but it keeps low in the Northern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28  19 32.63  -38 41.4   2.681   3.477   135   18.0   3:06 (359, 16)  
June  4  19 30.34  -39  7.6   2.602   3.458   141   17.8   2:41 (  0, 16)

* C/2016 A1 ( PanSTARRS )

It keeps 16 mag for a long time from 2017 to 2018. Now it is 17.8 mag (May 13, J. Oey, P. Camilleri, H. Williams). In the Southern Hemisphere, it keeps observable in good condition until early summer. It will be unobservable soon in the Northern Hemispehre. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   8 56.53  -18 59.3   6.770   6.647    78   17.9  20:48 ( 60,  9)  
June  4   8 57.80  -18  4.6   6.842   6.618    73   17.9  20:55 ( 65,  3)

* C/2014 Y1 ( PanSTARRS )

Now it is 16.8 mag (Apr. 12, Hidetaka Sato). It was expected to brighten up to 14 mag from winter to summer. But it is much fainter actually. It will be 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)  
May  28  16 20.50  -39 56.4   1.709   2.690   161   17.9  23:54 (  0, 15)  
June  4  16 15.80  -40  7.5   1.754   2.733   160   18.0  23:22 (  0, 15)

* 333P/LINEAR

First return of an object discovered as an asteroid 2007 VA85 in 2007. It brightened very rapidly since mid February, and brightened up to 11.3 mag in spring (Mar. 5, Juan Jose Gonzalez). In the Northern Hemisphere, it locates extremely low in May, but it will be observable in the morning sky after June. However, it may fade out very rapidly and may be fainter than 18 mag. It keeps unobservable until September in the Southern Hemisphere. 

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May  28   2 55.08   45 25.6   2.121   1.338    29   18.3   3:06 (222, 11)  
June  4   2 50.54   47  5.3   2.106   1.390    34   18.5   3:01 (223, 16)

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