Seiichi Yoshida's Diary of Comet Observations (2014)

Japanese version
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Updated on September 27, 2014

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Detailed observation data in ICQ format.

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* 2014 Sept. 22 (9 comets)

I observed 9 comets visually on Sept. 22 in Kita-karuizawa, Gunma, Japan.

The weather kept fine with no clouds all night. I could see very thin Moon in the morning sky.

C/2010 S1 ( LINEAR )

13.3 mag   Dia. 0.9'   DC 2   (40.0-cm reflector 144x)

Very diffuse.

C/2011 J2 ( LINEAR )

14.7 mag   Dia. 0.8'   DC 3   (40.0-cm reflector 257x)

Hard to see. Just after the nucleus split, but no outburst occured and much more difficult to see than last year.

C/2012 K1 ( PanSTARRS )

7.5 mag   Dia. 6'   DC 6   (40.0-cm reflector 36x)

7.1 mag   Dia. 8'   DC 7   (10x70 monocular)

Very bright and easy to see.

C/2014 E2 ( Jacques )

9.2 mag   Dia. 5.5'   DC 5   (40.0-cm reflector 36x)

Getting fainter now, but still bright and easy to see. It looks strongly condensed as DC=7 with 75x magnification.

P/2014 L2 ( NEOWISE )

fainter than 13.8 mag   Dia. 0.6'   (40.0-cm reflector 257x)

Not visible.

4P/Faye

14.3 mag   Dia. 0.4'   DC 3   (40.0-cm reflector 257x)

Hard to see.

17P/Holmes

14.3 mag   Dia. 0.6'   DC 4   (40.0-cm reflector 257x)

Tiny and faint. Hard to imagine it brightened up to 2 mag in its last apparition.

32P/Comas Sola

fainter than 14.2 mag   Dia. 0.7'   (40.0-cm reflector 257x)

Unexpectedly, not visible.

284P/McNaught

13.9 mag   Dia. 0.7'   DC 3   (40.0-cm reflector 257x)

Unexpectedly, I could see it. Faint and diffuse.

* 2014 May 3 (9 comets)

I observed 9 comets visually on May 3 in Kita-karuizawa, Gunma, Japan.

The weather kept fine with no clouds all night. But the transparency was not excellent.

I could not observe C/2013 V1 and C/2013 Y2 because they were overlapping on 13-mag stars.

C/2012 F3 ( PanSTARRS )

13.3 mag   Dia. 1.0'   DC 3   (40.0-cm reflector 144x)

Faint and hard to see.

C/2012 K1 ( PanSTARRS )

9.0 mag   Dia. 8'   DC 7   (40.0-cm reflector 36x)

Very strongly condensed, and very bright. I enjoyed the rendezvous with Whirlpool Galaxy M51.

C/2012 X1 ( LINEAR )

7.9 mag   Dia. 5'   DC 5   (40.0-cm reflector 36x)

Bright, large, and easy to see.

C/2013 R1 ( Lovejoy )

11.3 mag   Dia. 2.0'   DC 3   (40.0-cm reflector 75x)

Very diffuse. But it looks large and easy to see.

C/2014 E2 ( Jacques )

8.0 mag   Dia. 6'   DC 4   (40.0-cm reflector 36x)

Bright, moderately condensed, and easy to see.

29P/Schwassmann-Wachmann 1

13.0 mag   DC 9   (40.0-cm reflector 257x)

I read the new outburst report up to 13 mag on May 2 at comets-ml, and I tried to observe it. Completely stellar. There are many 13-mag stars around the comet.

134P/Kowal-Vavrova

12.6 mag   Dia. 1.1'   DC 4   (40.0-cm reflector 144x)

Unexpectedly bright and easy to see.

209P/LINEAR

fainter than 14.3 mag   (40.0-cm reflector 257x)

It is predicted to be 11 mag at the end of this month. But it was not visible.

290P/Jager

fainter than 13.1 mag   Dia. 0.7'   (40.0-cm reflector 257x)

Not visible.

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Go to Seiichi Yoshida's Diary of Comet Observations in 2013.

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