Weekly Information about Bright Comets (2016 Aug. 20: North)

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Updated on August 21, 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 )

It brightened up to 6.2 mag in June (June 24, Marco Goiato). Now it is fading. It has already faded down to 10.6 mag (Aug. 8, Chris Wyatt). It will be unobservable soon in the Northern Hemisphere. In the Southern Hemisphere, it will be getting lower after this, and will be unobservable in October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  14 18.20  -29 19.1   2.188   2.167    75   10.1  20:13 ( 48,  6)  
Aug. 27  14 18.15  -28 42.0   2.401   2.240    68   10.4  20:02 ( 51,  4)  

* 9P/Tempel 1

Now it is 10.3 mag (July 31, Marco Goiato). It keeps 11-12 mag until September. In the Northern Hemisphere, it keeps low for a long time after this.. In the Southern Hemisphere, it keeps observable in good condition for a long time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  14 28.52  -16 39.6   1.510   1.552    72   11.7  20:13 ( 55, 17)  
Aug. 27  14 47.66  -18 53.5   1.558   1.561    71   11.8  20:02 ( 53, 15)  

* 43P/Wolf-Harrington

Now it is 12.3 mag (Aug. 12, Chris Wyatt). It is observable at 12 mag from summer to autumn, but it keeps low for some time.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   7 20.22   19 56.3   1.996   1.358    38   12.0   3:52 (257, 17)  
Aug. 27   7 43.98   18  0.8   1.981   1.360    39   12.0   4:00 (260, 18)  

* 81P/Wild 2

Now it is 11.1 mag (July 31, Chris Wyatt). It is not observable now in the Northern Hemisphere. It will be unobservable in September also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  11 54.63    2 38.5   2.408   1.621    30   12.2  20:13 ( 94, -1)  
Aug. 27  12 13.68    0 38.7   2.444   1.636    29   12.3  20:02 ( 92, -2)  

* 237P/LINEAR

It brightened rapidly up to 13.1 mag (Aug. 12, A. Diepvens). It will be observable at 12-13 mag until autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  14 31.38  -14  7.1   2.083   2.029    72   12.6  20:13 ( 56, 19)  
Aug. 27  14 45.02  -14 31.6   2.139   2.018    69   12.5  20:02 ( 56, 18)  

* C/2014 S2 ( PanSTARRS )

It brightened up to 8-9 mag from winter to spring. Now it is fading. It has already faded down to 12.9 mag (July 23, Chris Wyatt). It will be unobservable soon. But it will appear in the morning sky at 14 mag in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  11 55.66   10 45.2   4.374   3.523    28   12.8  20:13 (101,  3)  
Aug. 27  12  1.31    9 11.6   4.478   3.580    24   12.9  20:02 (101,  0)  

* (3200) Phaethon

It passes the perihelion on Aug. 19. It is not observable now. In the Northern Hemisphere, it will be observable at 15 mag in good condition from September to October. In the Southern Hemisphere, it is not observable until November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  10 24.32    8 13.7   1.029   0.140     7   12.9  20:13 (112,-15)  
Aug. 27  10 49.44   16 16.2   0.730   0.310     8   19.5  20:02 (118, -9)  

* 29P/Schwassmann-Wachmann 1

Outburst occured on July 28. Now it is bright as 12.0 mag (Aug. 11, Juan Jose Gonzalez). It is observable in excellent condition in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  19 18.99  -25 41.5   5.096   5.911   140   13.3  21:22 (  0, 29)  
Aug. 27  19 17.08  -25 36.7   5.170   5.909   133   13.4  20:53 (  0, 29)  

* 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)  
Aug. 20   9 31.41    7 40.2   2.412   1.417     8   13.4   3:52 (248,-16)  
Aug. 27   9 55.18    5 42.1   2.406   1.413     8   13.4   4:00 (251,-15)  

* C/2016 A8 ( LINEAR )

Now it is so bright as 12.6 mag (Aug. 17, Thomas Lehmann). It is observable in excellent condition in the Northern Hemispehre. In the Southern Hemisphere, it keeps locating low until August, but it will be observable in good condition after September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  22 34.81   42 45.9   1.122   1.886   124   13.7   0:44 (180, 82)  
Aug. 27  21 39.30   37 19.2   1.053   1.882   131   13.5  23:10 (180, 88)  

* C/2014 W2 ( PanSTARRS )

Now it is 12.4 mag (Aug. 11, Juan Jose Gonzalez). It will be fading gradually after this. In the Northern Hemisphere, it keeps observable until early November. It becomes observable in the evening sky from July to September also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  15 14.20   30  6.7   3.272   3.156    74   13.6  20:13 ( 95, 53)  
Aug. 27  15 17.61   27  4.4   3.379   3.194    70   13.7  20:02 ( 92, 49)  

* C/2015 V2 ( Johnson )

Now it is 14.2 mag (July 23, 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)  
Aug. 20   9 51.58   51 29.7   4.642   3.909    39   14.0   3:52 (213, 11)  
Aug. 27  10  5.01   50 58.9   4.547   3.843    41   13.8   4:00 (216, 13)  

* 53P/Van Biesbroeck

Now it is very bright as 12.5 mag (Aug. 3, Marco Goiato). It keeps observable in good condition for a while. But it will be fading after this.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  20 56.26  -15 11.0   1.602   2.592   164   13.9  22:59 (  0, 40)  
Aug. 27  20 53.74  -15 46.4   1.650   2.612   157   14.0  22:29 (  0, 39)  

* C/2011 KP36 ( Spacewatch )

Now it is 13.6 mag (July 31, Chris Wyatt). Distant object, but it keeps observable at 14 mag for a long time from 2015 to 2016.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   0 52.24    0 57.1   4.158   4.922   134   14.0   2:59 (  0, 56)  
Aug. 27   0 51.78    0 28.1   4.097   4.929   141   14.0   2:31 (  0, 56)  

* C/2013 US10 ( Catalina )

It brightened up to 6 mag from autumn to winter. Now it is fading. It has already faded down to 14.5 mag (Aug. 5, Ken Harikae). It is observable in good condition in the Northern Hemisphere. It is not observable after this in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   6  4.88   50 11.4   4.432   4.028    60   14.3   3:52 (231, 42)  
Aug. 27   6  5.38   50 49.5   4.405   4.103    66   14.4   4:00 (230, 47)  

* 226P/Pigott-LINEAR-Kowalski

Now it is very bright as 13.9 mag (Aug. 13, Thomas Lehmann). It had been lost for a long time over 200 years since its discovery in 1783. The condition of this apparition is excellent, and it will brighten up to 14-15 mag in autumn. In the Northern Hemisphere, it will be getting higher rapidly after this, and will be observable in excellent condition from summer to winter. In the Southern Hemisphere, it keeps observable in good condition until November.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   4 42.94    2 28.5   1.686   1.783    78   14.4   3:52 (298, 38)  
Aug. 27   4 52.79    4 33.3   1.612   1.778    81   14.3   4:00 (302, 44)  

* 144P/Kushida

It became so bright as 8 mag in 2009. It was expected to brighten up to 11-12 mag from summer to autumn. But actually, it is 14.4 mag (Aug. 12, iTelescope SRO Observatory, Auberry), fainter than originally expected by 3 mag. It keeps locating low for a while.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   7 48.26   19 49.2   2.193   1.437    31   14.5   3:52 (253, 11)  
Aug. 27   8 12.07   18 27.4   2.172   1.432    32   14.3   4:00 (256, 12)  

* 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)  
Aug. 20   8 44.45   14 58.2   2.983   2.044    17   15.0   3:52 (250, -3)  
Aug. 27   9  0.46   14  5.8   2.973   2.059    20   15.2   4:00 (253,  0)  

* 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)  
Aug. 20  10 24.98  -57 56.5   2.536   2.398    70   15.2  20:13 ( 40,-42)  
Aug. 27  11  1.63  -58 16.3   2.597   2.422    68   15.3  20:02 ( 40,-40)  

* C/2015 ER61 ( PanSTARRS )

Now it is 16.4 mag (Aug. 12, Thomas Lehmann). It will be unobservable temporarily from summer to autumn. Then it will appear in the morning sky at 13 mag in December. 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)  
Aug. 20  11 49.98   -3  8.9   4.562   3.742    31   15.5  20:13 ( 90, -6)  
Aug. 27  11 56.67   -3 45.8   4.539   3.668    27   15.4  20:02 ( 91, -8)  

* 77P/Longmore

It brightened up to 13.0 mag in spring (May 6, Marco Goiato). It is already unobservable in the Northern Hemisphere. 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)  
Aug. 20  13 48.43  -28 53.6   2.591   2.427    69   15.7  20:13 ( 52,  1)  
Aug. 27  14  0.16  -29 59.7   2.675   2.440    65   15.8  20:02 ( 52,  0)  

* 146P/Shoemaker-LINEAR

Now it is 15.9 mag (July 28, Ken-ichi Kadota), brighter than originally predicted. Now it is brightest. In the Southern Hemisphere, it keeps observable until winter, but it locates somewhat low. In the Northern Hemisphere, it will be getting higher after this, and it will be observable in excellent condition.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   5 29.84   20 37.9   1.685   1.544    64   15.8   3:52 (271, 39)  
Aug. 27   5 46.71   22 18.3   1.666   1.575    67   16.0   4:00 (272, 44)  

* 315P/2013 V6 ( LONEOS )

It is appearing in the morning sky in the Northern Hemisphere. It is expected to brighten up to 14 mag from winter to spring in 2017, and it will be observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it keeps extremely low until autumn, and it will be low also around the higlight.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   7 50.67   28 36.8   3.348   2.568    33   16.1   3:52 (245, 15)  
Aug. 27   8  5.53   28 28.0   3.281   2.550    37   15.9   4:00 (248, 19)  

* 116P/Wild 4

It was observed at 13 mag for a long time from winter to early summer. Now it is fading. It has already faded down to 15.7 mag (July 18, J. Gaitan). 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)  
Aug. 20  15 51.46  -23 47.5   2.384   2.648    93   16.0  20:13 ( 34, 23)  
Aug. 27  15 59.64  -24  6.4   2.496   2.672    88   16.2  20:02 ( 36, 22)  

* C/2015 O1 ( PanSTARRS )

Now it is 15.5 mag (July 30, Yasukazu Ikari). It will be observable at 13 mag for a long time from 2017 to 2018. In 2016, it keeps observable at 16 mag in good condition until autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  18 56.77   -9 44.6   5.187   5.953   135   16.1  21:00 (  0, 45)  
Aug. 27  18 51.31   -9 36.6   5.236   5.910   127   16.1  20:27 (  0, 45)  

* 56P/Slaughter-Burnham

Now it is 15.9 mag (Aug. 13, Purple Mountain Observatory, XuYi Station). It will be observable at 16 mag in good condition from autumn to winter. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   3 59.98   27 34.9   2.422   2.521    83   16.4   3:52 (275, 61)  
Aug. 27   4  9.17   28 24.8   2.347   2.527    88   16.4   4:00 (278, 66)  

* C/2016 B1 ( NEOWISE )

Now it is 16.2 mag (June 29, iTelescope Observatory, Siding Spring). It keeps 16 mag for a long time until 2017. It is already unobservable in the Northern Hemisphere. It will be unobservable in October also in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  13 19.01  -20 31.1   3.763   3.364    59   16.4  20:13 ( 63,  2)  
Aug. 27  13 28.40  -20  2.2   3.827   3.344    54   16.4  20:02 ( 65,  1)  

* C/2016 N4 ( MASTER )

Now it is 15.8 mag (Aug. 7, T. Seki, H. Sato). It will brighten up to 14 mag from summer to winter in 2017. Then it will be observable in excellent condition in the Northern Hemisphere. In the Southern Hemisphere, it is hardly observable around the highlight.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   0 11.70  -18  2.0   3.938   4.820   147   16.5   2:18 (  0, 37)  
Aug. 27   0  5.67  -17 58.7   3.847   4.776   153   16.4   1:45 (  0, 37)  

* C/2014 OE4 ( PanSTARRS )

Now it is 16.1 mag (Aug. 6, Yuji Ohshima). 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)  
Aug. 20  16 31.48   34 53.0   6.216   6.292    89   16.7  20:13 ( 97, 70)  
Aug. 27  16 31.57   34 35.3   6.276   6.287    85   16.8  20:02 ( 97, 67)  

* 219P/LINEAR

Now it is 16.6 mag (Aug. 4, A. Diepvens). It keeps 16-17 mag and keeps observable in good condition until autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  17 35.34  -11 16.5   2.043   2.648   116   16.7  20:13 ( 11, 43)  
Aug. 27  17 37.82  -11 28.9   2.105   2.629   110   16.8  20:02 ( 16, 42)  

* C/2014 W11 ( PanSTARRS )

It brightened very rapidly in 2015 spring, and reached up to 13.8 mag (2015 May 11, Sandor Szabo). It kept 14-15 mag from winter to early summer in 2016. Now it is fading. It will be unobservable soon in the Northern Hemisphere. In the Southern Hemisphere, it keeps observable until October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  14 11.91  -24 56.8   4.806   4.602    72   16.9  20:13 ( 52,  8)  
Aug. 27  14 17.72  -25  7.1   4.933   4.633    67   17.0  20:02 ( 53,  6)  

* C/2014 A4 ( SONEAR )

It brightened up to 15 mag from late 2014 to early 2016. Now it is fading slowly. Now it is 16.1 mag (Aug. 16, D. Buczynski). In the Northern Hemisphere, it will be observable at 16-17 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)  
Aug. 20  23 10.45   44 18.2   4.486   5.080   120   16.9   1:17 (180, 81)  
Aug. 27  22 58.13   44 27.9   4.466   5.112   124   16.9   0:38 (180, 80)  

* D/1978 R1 ( Haneda-Campos )

It has been lost since its discovery in 1978. In 2016, it is expected to return in excellent condition from autumn to winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  19 33.69  -32 25.3   0.688   1.609   141   17.4  21:37 (  0, 23)  
Aug. 27  19 30.62  -32 38.7   0.681   1.564   134   17.0  21:06 (  0, 22)  

* 74P/Smirnova-Chernykh

Now it is 18.5 mag (Aug. 11, CAO, San Pedro de Atacama). It will be observable at 16 mag in good condition from autumn to winter. It locates low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   6 35.46   24 10.9   4.521   3.934    49   17.2   3:52 (259, 28)  
Aug. 27   6 43.04   24 10.4   4.431   3.925    54   17.1   4:00 (262, 33)  

* 47P/Ashbrook-Jackson

Now it is 17.4 mag (July 24, CAO, San Pedro de Atacama). 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)  
Aug. 20  18 37.62  -38 35.0   2.523   3.253   128   17.1  20:41 (  0, 16)  
Aug. 27  18 36.78  -38  0.1   2.581   3.235   122   17.1  20:13 (  0, 17)  

* C/2016 K1 ( LINEAR )

Now it is 17.9 mag (Aug. 8, J. Gonzalez). It keeps 17-18 mag until autumn. It keeps observable in excellent condition in the Northern Hemisphere. It will be getting lower gradually in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  20 24.60   36 37.3   1.585   2.331   126   17.2  22:25 (180, 88)  
Aug. 27  19 59.15   37 29.8   1.653   2.347   121   17.3  21:33 (180, 87)  

* 93P/Lovas 1

Now it is 17.1 mag (Aug. 12, iTelescope Observatory, Siding Spring). It will brighten up to 15 mag in winter. But it will be getting lower gradually after autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  22 37.58  -11 15.9   1.517   2.520   170   17.4   0:45 (  0, 44)  
Aug. 27  22 30.99  -11 15.1   1.466   2.476   177   17.2   0:11 (  0, 44)  

* C/2015 VL62 ( Lemmon-Yeung-PanSTARRS )

Now it is 16.9 mag (Aug. 13, S. Shurpakov). It will brighten up to 13 mag and will be observable in good condition in 2017 summer. In 2016, it keeps observable until winter when it will brighten up to 15.5 mag. It locates somewhat low in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   3 36.72   30 43.9   4.499   4.577    88   17.4   3:52 (272, 66)  
Aug. 27   3 33.09   31  1.4   4.319   4.527    95   17.2   4:00 (279, 74)  

* C/2015 B2 ( PanSTARRS )

Now it is 18.0 mag (July 24, CAO, San Pedro de Atacama). It keeps 17 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)  
Aug. 20   3 12.15  -46 20.9   3.082   3.511   106   17.3   3:52 (345,  6)  
Aug. 27   2 59.93  -47 52.3   3.033   3.529   111   17.3   4:00 (353,  7)  

* 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 17.0 mag (Aug. 12, iTelescope Observatory, Siding Spring). It will be fainter than 18 mag in October.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  23 19.02   -4 30.6   4.646   5.599   158   17.4   1:26 (  0, 51)  
Aug. 27  23 16.46   -4 55.9   4.659   5.644   165   17.4   0:56 (  0, 50)  

* C/2015 V1 ( PanSTARRS )

Now it is 17.5 mag (Aug. 4, Toshiyuki Takahashi). It will brighten up to 15 mag and will be observable in good condition from autum to winter in 2017. In the Northern Hemisphere, it keeps observable in good condition for a long time while the comet will be brightening. It is not observable until 2017 summer in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   5 19.34   56 30.6   6.088   5.793    68   17.6   3:52 (222, 48)  
Aug. 27   5 18.57   56 54.6   5.952   5.757    74   17.5   4:00 (220, 53)  

* C/2015 WZ ( PanSTARRS )

It brightened up to 10-11 mag in May. Now it is fading rapidly. It is already fainter than 17.0 mag (Aug. 6, Thomas Lehmann). It keeps observable in good condition until September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  14 57.59    9  0.2   2.289   2.225    73   17.5  20:13 ( 71, 39)  
Aug. 27  14 56.62    6 22.1   2.482   2.296    67   18.0  20:02 ( 72, 34)  

* 340P/2016 N2 ( Boattini )

First return of a new periodic comet discovered in 2008. Now it is 18.8 mag (Aug. 1, M. Jaeger, E. Prosperi, S. Prosperi, W. Vollmann). It keeps observable at 17.5 mag until autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  20  9.49  -19 13.0   2.162   3.099   153   17.5  22:12 (  0, 36)  
Aug. 27  20  6.53  -19 18.9   2.206   3.093   145   17.5  21:42 (  0, 36)  

* C/2010 U3 ( Boattini )

It will pass the perihelion in 2019. However, it has not been brightening since the discovery in 2010. Now it is 18.1 mag (Aug. 10, D. Buczynski). It keeps 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)  
Aug. 20   4 38.67   54 46.8  10.238  10.006    73   17.6   3:52 (223, 54)  
Aug. 27   4 40.73   55 22.5  10.123   9.985    79   17.5   4:00 (219, 59)  

* C/2014 N3 ( NEOWISE )

It was observed at 14-15 mag from 2014 to 2015. Now it is fading. It has already faded down to 17.3 mag (Aug. 10, D. Buczynski). In the Northern Hemisphere, it keeps observable in excellent condition until winter when the comet will be fainter than 18 mag. It is not observable in the Southern Hemisphere.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   4 31.57   73 19.0   6.031   5.863    75   17.6   3:52 (196, 47)  
Aug. 27   4 39.22   74 33.5   6.008   5.904    79   17.6   4:00 (193, 47)  

* 22P/Kopff

It brightened up to 10 mag in 2015 autumn. Now it is fading. It has already faded down to 16.1 mag (Aug. 16, Buczynski). It will be fainter than 18 mag in September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   3 34.99   14  2.0   2.798   3.014    92   17.6   3:52 (304, 58)  
Aug. 27   3 37.85   14  1.5   2.737   3.053    98   17.7   4:00 (316, 63)  

* 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 16.7 mag (Aug. 9, Purple Mountain Observatory, XuYi Station). It will be fainter than 18 mag in September.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  17 15.35   19 19.2   6.175   6.488   103   17.6  20:13 ( 41, 70)  
Aug. 27  17 14.51   18 21.7   6.317   6.548    98   17.7  20:02 ( 48, 67)  

* C/2015 H2 ( PanSTARRS )

Now it is 17.4 mag (July 2, G. Gunn, G. W. Christie). 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)  
Aug. 20  17 35.60  -59 48.4   4.488   4.971   112   17.7  20:13 (  4, -5)  
Aug. 27  17 38.33  -58 58.6   4.559   4.969   108   17.8  20:02 (  6, -4)  

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

Now it is 18.0 mag (Aug. 9, Jean-Francois Soulier). It has brightened in outburst up to 14 mag twice, in 2006 January and 2011 May. It is observable at 17 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   1 28.02    7 16.6   5.634   6.257   124   17.8   3:34 (  0, 62)  
Aug. 27   1 27.36    7  8.3   5.559   6.269   131   17.7   3:06 (  0, 62)  

* 343P/2016 P3 ( NEAT-LONEOS )

Now it is 18.9 mag (Aug. 9, S. Maticic). It will be observable at 17.5 mag in good condition in autumn.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  23 16.56    4 44.6   1.711   2.658   153   17.9   1:23 (  0, 60)  
Aug. 27  23 13.45    4 39.2   1.654   2.629   160   17.8   0:53 (  0, 60)  

* 188P/LINEAR-Mueller

It is 17.2 mag now (Aug. 5, Toshiyuki Takahashi). It was expected to brighten up to 16 mag and observable in good condition in autumn. But actually, it is fainter than originally predicted by 2 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20  23  9.36  -11 45.3   1.861   2.843   162   17.9   1:16 (  0, 43)  
Aug. 27  23  4.65  -11 51.5   1.823   2.823   169   17.8   0:44 (  0, 43)  

* P/2007 T6 ( Catalina )

It has not been recovered in this apparition yet. It is expected to brighten up to 16.5 mag and will be observable in good condition from autumn to winter.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   3 19.20   -8 41.2   2.248   2.637   101   18.0   3:52 (329, 41)  
Aug. 27   3 25.63   -9  5.7   2.149   2.610   105   17.8   4:00 (338, 43)  

* 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)  
Aug. 20  16 58.49  -37 32.8   9.518   9.903   109   17.8  20:13 ( 14, 16)  
Aug. 27  16 56.83  -37 31.8   9.665   9.937   102   17.9  20:02 ( 18, 15)  

* 339P/2016 N1 ( 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 was expected to brighten up to 15.5 mag in autumn and will be observable in good condition. But actually, it is 18.4 mag (Aug. 12, ATLAS-HKO, Haleakala), fainter than originally expected by 3 mag.

Date(TT)  R.A. (2000) Decl.   Delta     r    Elong.  m1   Best Time(A, h)  
Aug. 20   0 24.89  -16 24.8   1.505   2.400   144   18.2   2:31 (  0, 39)  
Aug. 27   0 20.00  -15 58.2   1.452   2.386   150   18.1   1:59 (  0, 39)  

* C/2014 Y1 ( PanSTARRS )

Now it is 17.1 mag (July 9, Kunihiro Shima). 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)  
Aug. 20  16 27.95  -37 57.0   2.883   3.271   103   19.3  20:13 ( 20, 13)  
Aug. 27  16 34.72  -37 46.5   3.023   3.324    98   19.5  20:02 ( 22, 13)  

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