Weekly Information about Bright Comets (2016 Apr. 23: South)

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Updated on April 25, 2016
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Best time and the azimuth, altitude (A,h) are at lat. 35 deg in the Southern Hemisphere.
Azimuth indicates 0 for south, 90 for west, 180 for north, 270 for east.

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* 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 keeps brightening even after the perihelion passage. It is very bright as 6.5 mag still now (Apr. 18, 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)  
Apr. 23  17 25.15    7  0.1   0.196   1.132   126    6.5   3:21 (180, 48)  
Apr. 30  17 18.77    8 23.3   0.237   1.180   132    7.1   2:47 (180, 47)  

* C/2013 X1 ( PanSTARRS )

Now it is 7.6 mag (Apr. 20, Marco Goiato). It will pass close to the earth from spring to summer, and it is expected to brighten up to 5-6 mag. But it is somewhat fainter than this ephemeris. 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)  
Apr. 23  23 31.00   -0 15.8   1.917   1.315    39    6.9   5:05 (255, 20)  
Apr. 30  23 28.45   -1 46.0   1.767   1.322    47    6.8   5:10 (251, 28)  

* C/2014 S2 ( PanSTARRS )

Now it is so bright as 10.0 mag (Apr. 15, 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)  
Apr. 23  11  8.56   53 34.7   2.183   2.617   104   10.0  21:01 (180,  2)  
Apr. 30  11  2.63   49 54.4   2.282   2.664   100   10.1  20:27 (180,  5)  

* C/2013 US10 ( Catalina )

Now it is 10.5 mag (Apr. 7, Carlos Labordena). It was expected to brighten up to 4-5 mag from autumn to winter. But actually, it was 6 mag at best. Now it is fading rapidly. 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)  
Apr. 23   4 42.07   47 41.5   3.214   2.652    48   11.8  18:51 (142,-10)  
Apr. 30   4 48.28   47 17.7   3.382   2.739    43   12.0  18:44 (140,-12)  

* 81P/Wild 2

Now it is 11.7 mag (Apr. 9, Seiichi Yoshida). It will brighten up to 11 mag from spring to 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)  
Apr. 23   6 36.39   22 47.4   1.984   1.812    65   12.1  18:51 (145, 23)  
Apr. 30   6 52.13   22 41.5   2.013   1.781    62   12.0  18:44 (144, 23)  

* C/2014 W2 ( PanSTARRS )

Now it is 12.2 mag (Apr. 8, 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)  
Apr. 23  19 35.83   71 14.8   2.690   2.709    80   12.2   5:05 (182,-16)  
Apr. 30  19  9.54   72  0.1   2.674   2.722    81   12.2   4:37 (180,-17)  

* 9P/Tempel 1

Now it is 14.0 mag (Apr. 15, Seiichi Yoshida). Brightening very rapidly, but it is fainter than this ephemeris. It is expected to be observable at 11 mag in good condition from spring to summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23  11 43.00   20  0.5   0.982   1.819   132   12.5  21:35 (180, 35)  
Apr. 30  11 40.57   19  1.7   0.994   1.786   126   12.3  21:05 (180, 36)  

* 333P/LINEAR

First return of an object discovered as an asteroid 2007 VA85 in 2007. It brightened very rapidly since mid February, and now it is so bright as 12.6 mag (Mar. 28, Thomas Lehmann). It is alreay unobservable in the Southern Hemisphere. It will be unobservable soon also in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23   3 12.68   37 40.3   1.909   1.146    29   12.7  18:51 (124,-18)  
Apr. 30   3  9.08   39 15.7   1.992   1.173    25   13.5  18:44 (123,-23)  

* 116P/Wild 4

Now it is 13.4 mag (Apr. 15, Seiichi Yoshida). 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)  
Apr. 23  15 55.66  -23 20.5   1.369   2.302   151   13.2   1:52 (180, 78)  
Apr. 30  15 51.48  -23 25.0   1.349   2.317   158   13.3   1:20 (180, 78)  

* 29P/Schwassmann-Wachmann 1

It is observable in excellent condition in the Southern Hemisphere. Now it is faint as 17.2 mag (Apr. 16, Jean-Francois Soulier).

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23  19 53.79  -25 19.3   5.729   5.943    97   13.6   5:05 (227, 76)  
Apr. 30  19 55.04  -25 16.7   5.618   5.941   103   13.6   5:10 (197, 80)  

* C/2015 WZ ( PanSTARRS )

Now it is very bright as 13.0 mag (Apr. 17, A. Novichonok, G. Borisov). In the Northern Hemisphere, it is observable at 13-14 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)  
Apr. 23  23 23.63   27 16.6   1.988   1.381    40   13.7   5:05 (233,  4)  
Apr. 30  23 16.38   29 59.6   1.871   1.392    46   13.7   5:10 (225,  8)  

* 104P/Kowal 2

Now it is bright as 13.0 mag (Apr. 14, C. Rinner, F. Kugel, A. Klotz, J. Nicolas). 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)  
Apr. 23   4 37.76   17 14.9   1.856   1.223    37   13.9  18:51 (119, 10)  
Apr. 30   5  6.37   17 31.7   1.885   1.249    37   14.1  18:44 (121, 11)  

* 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)  
Apr. 23   0 47.70   15 19.8   2.790   1.864    18   14.3   5:05 (254, -4)  
Apr. 30   1  5.36   16 48.6   2.727   1.818    20   14.1   5:10 (251, -2)  

* 53P/Van Biesbroeck

Now it is 14.7 mag (Apr. 11, Yuji Ohshima). 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)  
Apr. 23  20 26.10  -13 45.4   2.256   2.430    87   14.6   5:05 (224, 63)  
Apr. 30  20 35.35  -13 11.8   2.176   2.430    92   14.5   5:10 (212, 65)  

* 77P/Longmore

Now it is 14.6 mag (Apr. 8, Seiichi Yoshida). It is observable at 14-15 mag in good condition from winter to summer.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23  12 52.90  -13 23.7   1.359   2.339   162   14.5  22:44 (180, 69)  
Apr. 30  12 45.72  -14 10.7   1.385   2.336   154   14.6  22:10 (180, 69)  

* 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)  
Apr. 23   3 51.39   14  6.9   2.879   2.028    26   14.7  18:51 (109,  3)  
Apr. 30   4  7.65   15  3.1   2.899   2.017    23   14.6  18:44 (110,  1)  

* 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. It becomes unobservable temporarily from January to March in the Southern Hemisphere, or from February to April in the Northern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23  23 47.08   -0 17.2   5.665   4.890    36   14.7   5:05 (258, 17)  
Apr. 30  23 53.60    0  9.8   5.599   4.887    41   14.6   5:10 (253, 22)  

* 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)  
Apr. 23   6 55.35   59 35.0   5.243   5.001    70   15.6  18:51 (165, -8)  
Apr. 30   7  1.20   59  4.6   5.260   4.938    66   15.5  18:44 (163, -8)  

* 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)  
Apr. 23  13 56.73  -29 31.8   3.137   4.109   162   15.9  23:49 (180, 85)  
Apr. 30  13 52.95  -29  7.9   3.161   4.136   163   16.0  23:17 (180, 84)  

* 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)  
Apr. 23  18 25.97   25 50.8   5.087   5.443   105   16.1   4:21 (180, 29)  
Apr. 30  18 22.72   26 16.0   5.078   5.506   110   16.1   3:50 (180, 29)  

* 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)  
Apr. 23  11 24.34   15 24.4   3.019   3.764   131   16.1  21:17 (180, 40)  
Apr. 30  11 22.33   15 15.4   3.080   3.748   124   16.1  20:47 (180, 40)  

* 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)  
Apr. 23   4 18.56   73 11.0   5.766   5.397    63   16.1  18:51 (162,-28)  
Apr. 30   4 35.33   73 27.9   5.822   5.412    61   16.2  18:44 (162,-28)  

* C/2015 T4 ( PanSTARRS )

Now it is 16.6 mag (Mar. 30, J. Tuten, B. Lutkenhoner, R. C. Bubany, D. P. Dean). It keeps 16-17 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)  
Apr. 23   4 17.60  -31  7.9   2.826   2.383    54   16.2  18:51 ( 72, 32)  
Apr. 30   4 26.77  -31 54.6   2.802   2.363    54   16.2  18:44 ( 70, 31)  

* 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)  
Apr. 23  15 45.40  -28 30.8   1.076   2.017   151   16.3   1:42 (180, 83)  
Apr. 30  15 37.91  -30 44.9   1.054   2.022   157   16.3   1:07 (180, 86)  

* 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)  
Apr. 23   8  0.02    3 25.0   9.936   9.960    88   16.5  18:51 (158, 49)  
Apr. 30   8  1.54    3 39.0  10.035   9.949    82   16.5  18:44 (151, 47)  

* 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)  
Apr. 23   8 12.53   37  9.7   2.419   2.525    84   16.5  18:51 (171, 17)  
Apr. 30   8 18.40   38 31.0   2.516   2.519    78   16.5  18:44 (168, 15)  

* 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)  
Apr. 23  11 13.49   -1 53.8   4.170   4.949   136   16.5  21:06 (180, 57)  
Apr. 30  11 10.76   -1 27.5   4.183   4.881   129   16.5  20:36 (180, 57)  

* 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)  
Apr. 23  11 13.53   13  3.2   2.097   2.857   130   16.9  21:06 (180, 42)  
Apr. 30  11 12.46   12 42.8   2.220   2.905   123   17.1  20:37 (180, 42)  

* 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)  
Apr. 23  14 58.84    3 46.1   1.668   2.630   158   17.0   0:55 (180, 51)  
Apr. 30  14 53.26    3 38.0   1.672   2.644   160   17.1   0:22 (180, 51)  

* C/2015 O1 ( PanSTARRS )

Appearing in the morning sky. 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)  
Apr. 23  20 23.55  -14 15.3   6.644   6.690    88   17.2   5:05 (223, 63)  
Apr. 30  20 22.27  -13 52.6   6.477   6.646    95   17.1   5:10 (206, 67)  

* 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)  
Apr. 23  22 54.35   -4 54.7   5.446   4.863    50   17.2   5:05 (253, 30)  
Apr. 30  22 59.59   -4 28.9   5.404   4.904    55   17.2   5:10 (248, 35)  

* 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)  
Apr. 23  15 51.14   75  1.2   7.222   7.307    90   17.2   1:47 (180,-20)  
Apr. 30  15 30.07   75 18.5   7.243   7.303    89   17.2   0:58 (180,-20)  

* 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)  
Apr. 23  10 26.76   -3 18.3  10.699  11.315   125   17.2  20:19 (180, 58)  
Apr. 30  10 24.96   -3  1.6  10.836  11.352   118   17.3  19:50 (180, 58)  

* 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)  
Apr. 23  18  5.29  -34 47.8   8.760   9.321   121   17.3   4:01 (180, 90)  
Apr. 30  18  2.21  -35  9.9   8.696   9.355   128   17.3   3:30 (  0, 90)  

* 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)  
Apr. 23  13 29.01   30 25.4   2.534   3.334   136   17.3  23:20 (180, 25)  
Apr. 30  13 22.45   29 55.4   2.614   3.377   132   17.4  22:46 (180, 25)  

* 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)  
Apr. 23  12 17.02    5 46.7   1.896   2.799   147   17.3  22:09 (180, 49)  
Apr. 30  12 12.24    5 52.5   1.916   2.766   140   17.4  21:37 (180, 49)  

* 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)  
Apr. 23  17 25.65   26 57.9   5.925   6.444   117   17.5   3:21 (180, 28)  
Apr. 30  17 23.25   28 14.3   5.870   6.432   119   17.5   2:51 (180, 27)  

* C/2014 Y1 ( PanSTARRS )

Now it is 18.3 mag (Mar. 9, C. Jacques, E. Pimentel, J. Barros). 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)  
Apr. 23  16 38.77  -36 32.1   1.659   2.496   137   17.5   2:35 (  0, 88)  
Apr. 30  16 37.03  -37 31.3   1.648   2.532   143   17.6   2:05 (  0, 87)  

* C/2016 C2 ( NEOWISE )

Now it is 17.3 mag (Apr. 19, C. Jacques, E. Pimentel, J. Barros). It will be observable at 17.5 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)  
Apr. 23  18  5.82  -65 37.4   0.860   1.560   113   17.6   4:01 (  0, 60)  
Apr. 30  18 39.52  -70 60.0   0.871   1.566   112   17.6   4:07 (  0, 54)  

* (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)  
Apr. 23  13 42.42   -2 41.5   2.706   3.698   168   17.6  23:34 (180, 58)  
Apr. 30  13 39.07   -2  9.2   2.754   3.726   162   17.8  23:03 (180, 57)  

* C/2013 C2 ( Tenagra )

Very far object. Outburst occured on Feb. 20, 2015, and it brightened up to 15 mag. But it is faint as 18.4 mag now (Apr. 13, K. Hills). 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)  
Apr. 23  13 19.01  -25  6.6   8.205   9.174   163   17.7  23:11 (180, 80)  
Apr. 30  13 17.16  -24 47.9   8.222   9.176   160   17.7  22:42 (180, 80)  

* C/2016 B1 ( NEOWISE )

Now it is 17.9 mag (Mar. 19, iTelescope Observatory, Siding Spring). It keeps 17-18 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)  
Apr. 23  12  0.01  -43  3.8   3.041   3.862   139   17.8  21:52 (  0, 82)  
Apr. 30  11 58.32  -41 26.9   3.020   3.827   137   17.7  21:23 (  0, 84)  

* 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)  
Apr. 23  15  8.10    0 28.0   5.455   6.406   159   17.7   1:04 (180, 55)  
Apr. 30  15  3.99    1 31.5   5.461   6.425   161   17.8   0:32 (180, 54)  

* 89P/Russell 2

It has not been observed yet in this apparition. It will be observable at 17 mag from spring to autumn. 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)  
Apr. 23  14 48.62  -15 50.7   1.772   2.764   168   17.9   0:45 (180, 71)  
Apr. 30  14 42.58  -15 56.7   1.732   2.738   176   17.8   0:11 (180, 71)  

* 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)  
Apr. 23  16  0.01    5 39.7   3.650   4.517   145   17.8   1:56 (180, 49)  
Apr. 30  15 56.77    6  1.3   3.610   4.511   150   17.8   1:25 (180, 49)  

* 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)  
Apr. 23  18 17.65  -61 14.3   4.603   5.089   113   17.9   4:13 (  0, 64)  
Apr. 30  18 18.97  -61 54.1   4.524   5.077   118   17.8   3:47 (  0, 63)  

* 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)  
Apr. 23   8 57.06  -24 32.8   6.432   6.798   107   17.9  18:51 (179, 80)  
Apr. 30   8 55.91  -23 19.4   6.492   6.768   101   17.9  18:44 (156, 77)  

* 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)  
Apr. 23  22 18.01  -17 53.8   3.552   3.229    63   18.0   5:05 (260, 45)  
Apr. 30  22 26.08  -17  9.5   3.441   3.204    68   17.9   5:10 (255, 49)  

* P/2016 BA14 ( PanSTARRS )

It passed only 0.024 a.u. from the earth on Mar. 23, and brightened up to 12.8 mag (Mar. 22, Paul Camilleri). Almost stellar. Fading very rapidly. It has already faded down to 18.2 mag (Apr. 19, Catalina Sky Survey). It is observable in excellent condition in the Northern Hemisphere. It keeps low after this in the Southern Hemisphere. The orbital elements are similar to those of 252P/LINEAR.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23  16 35.85   40 15.9   0.250   1.139   116   18.2   2:31 (180, 15)  
Apr. 30  16 34.62   38 43.8   0.304   1.185   119   18.6   2:02 (180, 16)  

* 332P/2015 Y2 ( Ikeya-Murakami )

First return of a periodic comet which brightened up to 8 mag in major outburst in 2010. However, now it is faint; the fragment A is 19.3 mag (Apr. 6, K. Hills), the fragment C is 18.9 mag (Apr. 11, K. Hills). Fragments B to J are also observed.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23   9 40.44   15 30.0   0.972   1.612   109   18.4  19:34 (180, 40)  
Apr. 30   9 52.75   13 16.6   1.031   1.627   105   18.6  19:19 (180, 42)  

* P/2003 T12 ( SOHO )

STEREO spacecraft observed it at 8-9 mag on Feb. 21-22. It approached to the sun down to 0.58 a.u. on Mar. 9, but it was not observable around the perihelion passage. It is appearing in the evening sky now. But it will fade out very rapidly.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Apr. 23   5  7.74   16 21.9   1.420   0.999    44   21.3  18:51 (124, 15)  
Apr. 30   5 45.51   17 13.5   1.493   1.092    46   22.3  18:44 (127, 18)  

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