Weekly Information about Bright Comets (2016 May 7: North)

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Updated on May 7, 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 7.7 mag (May 5, Chris Wyatt). 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   7  23 24.62   -3 38.6   1.602   1.337    56    7.3   3:27 (282, 11)  
May  14  23 18.83   -6  4.4   1.426   1.360    65    7.1   3:19 (288, 14)  

* 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. It is very bright as 7.7 mag still now (May 6, 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   7  17 11.37    8 57.8   0.280   1.231   137    7.8   2:12 (  0, 64)  
May  14  17  3.54    8 54.6   0.326   1.286   143    8.6   1:37 (  0, 64)  

* C/2014 S2 ( PanSTARRS )

Now it is so bright as 10.0 mag (May 4, Seiichi Yoshida). 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   7  10 59.39   46 20.6   2.392   2.713    97   10.3  20:26 (156, 78)  
May  14  10 58.19   42 55.8   2.511   2.762    93   10.5  20:34 (126, 75)  

* 81P/Wild 2

Now it is 11.6 mag (May 2, Seiichi Yoshida). 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   7   7  8.66   22 28.1   2.040   1.752    59   11.9  20:26 ( 96, 33)  
May  14   7 25.89   22  6.6   2.065   1.725    56   11.8  20:34 ( 98, 29)  

* C/2015 WZ ( PanSTARRS )

Now it is very bright as 12.5 mag (May 4, Bob King). 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   7  23  6.61   33  5.1   1.745   1.411    53   11.9   3:27 (250, 33)  
May  14  22 53.08   36 36.7   1.613   1.437    61   12.0   3:19 (249, 41)  

* 9P/Tempel 1

Now it is 13.7 mag (May 3, Danil Sidorko). 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   7  11 40.05   17 45.7   1.011   1.754   120   12.1  20:37 (  0, 73)  
May  14  11 41.49   16 14.5   1.032   1.723   115   12.0  20:34 ( 16, 70)  

* C/2014 W2 ( PanSTARRS )

Now it is 12.2 mag (May 2, Seiichi Yoshida). 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   7  18 37.74   72 22.6   2.659   2.738    83   12.2   3:27 (181, 53)  
May  14  18  2.16   72 12.8   2.645   2.755    85   12.3   2:35 (180, 53)  

* C/2013 US10 ( Catalina )

Now it is 11.9 mag (May 4, Seiichi Yoshida). 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   7   4 54.56   47  0.4   3.540   2.824    38   12.3  20:26 (134, 20)  
May  14   5  0.86   46 48.5   3.686   2.909    34   12.5  20:34 (137, 16)  

* 116P/Wild 4

Now it is 13.1 mag (May 5, Chris Wyatt). 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   7  15 46.38  -23 24.8   1.340   2.334   166   13.3   0:47 (  0, 32)  
May  14  15 40.76  -23 20.4   1.343   2.351   173   13.4   0:14 (  0, 32)  

* 29P/Schwassmann-Wachmann 1

It is observable in excellent condition in the Southern Hemisphere. Now it is faint as 17.1 mag (Apr. 27, Jean-Francois Soulier).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  19 55.71  -25 15.5   5.509   5.939   110   13.5   3:27 (338, 26)  
May  14  19 55.80  -25 15.6   5.406   5.937   117   13.5   3:19 (342, 28)  

* 43P/Wolf-Harrington

It will brighten up to 11 mag from summer to autumn. It will appear in the morning sky in summer, but it keeps low for some time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7   1 23.76   18 15.9   2.665   1.772    22   13.9   3:27 (247,  0)  
May  14   1 42.95   19 40.3   2.602   1.727    23   13.6   3:19 (246,  0)  

* 104P/Kowal 2

Now it is bright as 13.1 mag (May 4, Seiichi Yoshida). Although it was faint as 19.0 mag in January (Jan. 10, B. Lutkenhoner), it brightened rapidly in February. It keeps observable until May in the Northern Hemisphere, or until July in the Southern Hemisphere. But it keeps extremely low. The brightness differs in every apparition. It was not observed in the last apparition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7   5 34.59   17 32.8   1.921   1.280    37   14.4  20:26 (103, 12)  
May  14   6  2.18   17 18.9   1.964   1.316    37   14.6  20:34 (104, 10)  

* 118P/Shoemaker-Levy 4

It will brighten up to 14 mag in summer. But 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   7   4 24.27   15 53.8   2.916   2.007    21   14.5  20:26 (112, -3)  
May  14   4 41.19   16 38.7   2.931   1.999    18   14.4  20:34 (115, -6)  

* 53P/Van Biesbroeck

Now it is 15.4 mag (May 3, Sandor Szabo). 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   7  20 43.81  -12 40.0   2.097   2.430    96   14.5   3:27 (320, 32)  
May  14  20 51.41  -12 10.9   2.020   2.432   101   14.4   3:19 (322, 34)  

* 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   7   3  5.72   40 47.6   2.055   1.206    24   14.6  20:26 (142,  1)  
May  14   3  2.41   42 18.5   2.097   1.245    24   15.7   3:19 (218,  3)  

* 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   7  23 59.93    0 35.1   5.526   4.885    46   14.6   3:27 (273,  6)  
May  14   0  6.04    0 58.7   5.447   4.884    51   14.6   3:19 (275,  9)  

* 77P/Longmore

Now it is bright as 13.0 mag (May 6, Marco Goiato). It is observable at 14 mag in good condition from winter to summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  12 39.72  -14 55.8   1.423   2.335   147   14.6  21:37 (  0, 40)  
May  14  12 35.19  -15 40.3   1.471   2.334   139   14.7  21:05 (  0, 39)  

* C/2015 T4 ( PanSTARRS )

Now it is bright as 14.9 mag (May 4, Hidetaka Sato). It keeps 15 mag for a long time until 2016 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   7   4 36.91  -32 50.2   2.772   2.346    55   15.3  20:26 ( 68,-28)  
May  14   4 48.07  -33 55.5   2.737   2.331    56   15.2  20:34 ( 69,-33)  

* C/2015 V2 ( Johnson )

Now it is 15.3 mag (Apr. 17, J. Aledo). It is expected to brighten up to 7 mag in 2017 summer. In the Northern Hemisphere, 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   7   7  7.90   58 34.9   5.273   4.875    61   15.5  20:26 (140, 42)  
May  14   7 15.39   58  5.9   5.280   4.812    57   15.4  20:34 (140, 38)  

* 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   7   0 37.11  -14 28.0   2.070   1.558    46   15.9   3:27 (281,-10)  
May  14   0 57.96  -11 59.5   2.022   1.529    47   15.6   3:19 (278, -9)  

* 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 (Apr. 8, Ken-ichi Kadota). 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   7  13 49.44  -28 40.4   3.198   4.163   160   16.1  22:46 (  0, 26)  
May  14  13 46.37  -28 10.6   3.249   4.191   155   16.2  22:16 (  0, 27)  

* 65P/Gunn

Now it is 16.0 mag (Apr. 14, H. Boussier). It will brighten up to 14 mag in 2017. In 2016, it keeps observable at 16 mag in good condition from winter to spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  11 21.14   15  0.2   3.149   3.731   118   16.2  20:26 (  5, 70)  
May  14  11 20.80   14 39.4   3.224   3.715   111   16.2  20:34 ( 28, 67)  

* C/2013 V4 ( Catalina )

Now it is 16.1 mag (Apr. 5, Yasukazu Ikari). It keeps 16 mag until autumn. It keeps observable in good condition for a long time in the Northern Hemisphere. It keeps unobservable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7   4 53.36   73 45.2   5.873   5.427    59   16.2  20:26 (161, 31)  
May  14   5 12.64   74  2.0   5.920   5.442    57   16.2  20:34 (162, 30)  

* 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 16.1 mag (Mar. 26, Toshiyuki Takahashi). 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   7  18 18.85   26 36.6   5.075   5.569   114   16.2   3:19 (  0, 82)  
May  14  18 14.43   26 51.6   5.079   5.632   118   16.3   2:47 (  0, 82)  

* 100P/Hartley 1

Now it is 16.7 mag (Apr. 15, Hiroshi Abe). It will brighten up to 16 mag from April to May. 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   7  15 28.89  -32 50.8   1.044   2.029   162   16.4   0:30 (  0, 22)  
May  14  15 18.94  -34 43.6   1.047   2.037   163   16.5  23:47 (  0, 20)  

* C/2015 ER61 ( PanSTARRS )

Now it is 16.8 mag (Apr. 12, K. Hills). The cometary activity is confirmed recently. 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   7  11  8.61   -1  4.1   4.205   4.813   121   16.4  20:26 (  8, 54)  
May  14  11  7.11   -0 44.3   4.234   4.744   114   16.4  20:34 ( 23, 52)  

* C/2014 B1 ( Schwartz )

Now it is 16.5 mag (Apr. 5, Yasukazu Ikari). It keeps 16-17 mag for a long time from 2016 to 2019. It keeps locating near by the equator.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7   8  3.34    3 51.5  10.132   9.939    76   16.5  20:26 ( 69, 33)  
May  14   8  5.41    4  2.5  10.227   9.928    70   16.5  20:34 ( 75, 27)  

* C/2015 Y1 ( LINEAR )

It brightened rapidly, and reached up to 15.5 mag (Feb. 11, Yasukazu Ikari). It will be fading after this. It has already faded down to 16.5 mag (Apr. 5, Yasukazu Ikari). 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   7   8 25.50   39 42.1   2.610   2.516    73   16.6  20:26 (111, 54)  
May  14   8 33.77   40 44.1   2.700   2.514    68   16.7  20:34 (114, 49)  

* 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   7  11 57.51  -39 43.9   3.012   3.793   135   17.0  20:55 (  0, 15)  
May  14  11 57.66  -37 57.4   3.015   3.760   131   16.9  20:34 (  1, 17)  

* C/2015 O1 ( PanSTARRS )

Now it is 17.3 mag (Apr. 20, Hidetaka Sato). 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   7  20 20.42  -13 30.5   6.312   6.602   102   17.0   3:27 (326, 35)  
May  14  20 17.96  -13  9.1   6.150   6.559   109   16.9   3:19 (331, 37)  

* 180P/NEAT

Now it is 16.6 mag (Apr. 9, MASTER-IAC Observatory, Tenerife). It keeps observable at 17 mag in good condition from winter to spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  14 47.56    3 21.3   1.689   2.659   159   17.1  23:44 (  0, 58)  
May  14  14 42.10    2 55.6   1.719   2.675   156   17.2  23:11 (  0, 58)  

* C/2012 F3 ( PanSTARRS )

It brightened up to 13-14 mag from 2014 to 2015. Now it is fading. It will be observable at 17 mag in 2016.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  23  4.44   -4  5.3   5.356   4.946    61   17.2   3:27 (286, 14)  
May  14  23  8.88   -3 44.0   5.302   4.989    66   17.2   3:19 (288, 17)  

* C/2014 R3 ( PanSTARRS )

Now it is 17.4 mag (Apr. 14, ATLAS-HKO, Haleakala). 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   7  15  8.19   75 21.7   7.268   7.299    87   17.2   0:09 (180, 50)  
May  14  14 46.57   75 10.6   7.296   7.296    86   17.2  23:13 (180, 50)  

* C/2016 C2 ( NEOWISE )

Now it is 16.8 mag (May 4, Martin Masek). It will be observable at 17 mag in good condition from April to May in the Southern Hemisphere. It is not observable after this in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  19 23.84  -75 28.1   0.892   1.577   112   17.2   3:27 (356,-21)  
May  14  20 22.61  -78 50.0   0.920   1.594   111   17.3   3:19 (355,-25)  

* 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   7  17 58.69  -35 31.3   8.642   9.389   135   17.3   2:59 (  0, 19)  
May  14  17 54.79  -35 51.6   8.600   9.423   142   17.3   2:28 (  0, 19)  

* C/2006 S3 ( LONEOS )

It brightened up to 11-12 mag in 2012. It has already faded down to 16.2 mag (Mar. 28, Toshiyuki Takahashi). It is observable at 17 mag in good condition from winter to spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  10 23.47   -2 46.4  10.980  11.390   111   17.3  20:26 ( 25, 49)  
May  14  10 22.27   -2 32.9  11.130  11.427   104   17.4  20:34 ( 38, 45)  

* 67P/Churyumov-Gerasimenko

It brightened up to 11.1 mag in 2015 autumn (Sept. 21, Seiichi Yoshida). Now it is 15.3 mag (Apr. 6, Thomas Lehmann). It keeps observable in good condition after this, while the comet will be fading gradually.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  11 12.50   12 16.8   2.349   2.953   117   17.3  20:26 ( 10, 67)  
May  14  11 13.57   11 46.0   2.483   3.000   111   17.6  20:34 ( 29, 64)  

* C/2014 OE4 ( PanSTARRS )

Now it is 17.1 mag (Apr. 8, D. Buczynski). It keeps 17.5 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   7  17 20.33   29 27.2   5.826   6.421   122   17.4   2:21 (  0, 84)  
May  14  17 16.92   30 35.4   5.792   6.410   123   17.4   1:50 (  0, 86)  

* P/2013 YG46 ( Spacewatch )

It was discovered around the aphelion in 2013 December. It keeps observable at 17 mag in good condition from 2016 to 2017. No observations have been reported since 2014 March.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  12  8.46    5 50.1   1.945   2.732   132   17.5  21:06 (  0, 61)  
May  14  12  5.82    5 39.3   1.983   2.698   125   17.6  20:35 (  0, 61)  

* 19P/Borrelly

Now it is 18.1 mag (Apr. 18, A. Diepvens). In the Northern Hemisphere, it keeps observable in good condition after this while the comet will be fading. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  13 16.75   29 14.3   2.703   3.418   128   17.6  22:13 (  0, 84)  
May  14  13 12.03   28 23.6   2.802   3.460   123   17.7  21:41 (  0, 83)  

* 89P/Russell 2

Now it is 20.1 mag (Apr. 26, Jean-Francois Soulier). It is predicted to be observable at 17 mag from spring to autumn. But it is fainter than this ephemeris. It will be extremely low after summer in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  14 36.18  -16  1.7   1.705   2.712   175   17.7  23:33 (  0, 39)  
May  14  14 29.80  -16  6.4   1.693   2.686   166   17.6  22:59 (  0, 39)  

* 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   7  16 34.02  -38 22.3   1.647   2.569   149   17.6   1:35 (  0, 17)  
May  14  16 30.00  -39  4.0   1.656   2.608   155   17.7   1:03 (  0, 16)  

* 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   7  18 22.12  -15 37.5   2.211   2.971   130   17.8   3:22 (  0, 39)  
May  14  18 21.22  -15  1.7   2.122   2.948   137   17.6   2:54 (  0, 40)  

* 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   7  22 33.78  -16 26.5   3.328   3.179    72   17.8   3:27 (300, 12)  
May  14  22 41.08  -15 45.1   3.213   3.155    77   17.7   3:19 (302, 15)  

* 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   7  13 15.46  -24 28.3   8.253   9.179   155   17.7  22:12 (  0, 30)  
May  14  13 13.96  -24  8.3   8.298   9.182   149   17.7  21:43 (  0, 31)  

* 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   7  23 13.43  -25 57.9   2.884   2.694    69   17.9   3:27 (301, -1)  
May  14  23 23.41  -25  2.9   2.785   2.671    73   17.7   3:19 (302,  1)  

* 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   7  18 19.10  -62 31.5   4.452   5.066   122   17.8   3:20 (  0, -7)  
May  14  18 18.03  -63  5.5   4.388   5.056   126   17.7   2:51 (  0, -8)  

* C/2015 LC2 ( PanSTARRS )

Now it is 17.4 mag (Apr. 15, H. Nohara). It becomes brighter than at the discovery in 2015. It is observable at 17.5 mag in good condition from spring to summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  14 59.81    2 32.2   5.484   6.445   160   17.8   0:01 (  0, 57)  
May  14  14 55.67    3 29.3   5.523   6.464   156   17.8  23:25 (  0, 59)  

* 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   7  15 53.13    6 18.6   3.582   4.504   152   17.8   0:54 (  0, 61)  
May  14  15 49.23    6 30.7   3.567   4.498   154   17.8   0:22 (  0, 61)  

* C/2016 A1 ( PanSTARRS )

It keeps 16 mag for a long time from 2017 to 2018. Now it is 17.5 mag (Apr. 6, W. Hasubick). In the Southern Hemisphere, it keeps observable in good condition until early summer. It will be unobservable in May in the Northern Hemispehre.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7   8 55.32  -22  8.8   6.558   6.738    95   17.9  20:26 ( 38, 22)  
May  14   8 55.26  -21  1.6   6.628   6.708    90   17.9  20:34 ( 46, 18)  

* (347449) 2012 TW236

First return of a peculiar asteroid 1998 HO121. It brightened up to 16.5 mag in early 2015 (Jan. 4, M. Jaeger, E. Prosperi, S. Prosperi, W. Vollmann). It is observable at 17.5 mag again in 2016 spring.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
May   7  13 36.08   -1 41.8   2.815   3.754   155   17.9  22:33 (  0, 53)  
May  14  13 33.60   -1 20.1   2.888   3.783   147   18.1  22:03 (  0, 54)  

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