Seiichi Yoshida's Diary of Comet Observations (2014)
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Updated on December 1, 2014 |
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Go to Seiichi Yoshida's Diary of Comet Observations in 2015. |
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2014 Nov. 29 (7 comets) |
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I observed 7 comets visually on Nov. 29 in Kita-karuizawa, Gunma, Japan.
After a low atmospheric pressure went away, the weather became fine rapidly. There were many clouds in the evening. But it became fine with no clouds in the morning.
I also tried to observe C/2012 K1 locating extremely low. I could guide my telescope just besides the position. However, I could not observe the comet due to trees and clouds.
C/2013 A1 ( Siding Spring )
10.4 mag Dia. 1.6' DC 4 (40.0-cm reflector 144x)
Extremely low, but bright. I could see also with lower magnification (x75).
C/2014 Q2 ( Lovejoy )
8.8 mag Dia. 5.0' DC 6 (40.0-cm reflector 75x)
The comet became much brighter and larger during last one month!
It located close to a 9-mag star, but the central condensation was clearly separated. So I think there was no influence.
C/2014 Q3 ( Borisov )
12.1 mag Dia. 2.1' DC 2 (40.0-cm reflector 75x)
Much more diffuse and the central condensation is weaker than expected. So harder to see than expected.
C/2014 R1 ( Borisov )
10.6 mag Dia. 1.5' DC 5 (40.0-cm reflector 75x)
Very bright and easy to see.
4P/Faye
14.0 mag Dia. 0.6' DC 3 (40.0-cm reflector 257x)
Still visible.
32P/Comas Sola
13.9 mag Dia. 0.7' DC 4 (40.0-cm reflector 257x)
It became well visible visually. I think the comet is brightening.
108P/Ciffreo
13.7 mag Dia. 0.7' DC 4 (40.0-cm reflector 144x)
Well visible unexpectedly.
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I observed 14 comets visually on Oct. 25 in Kita-karuizawa, Gunma, Japan.
It became almost cloudy in a short time of the evening, but the weather was fine with no clouds almost all night.
C/2010 S1 ( LINEAR )
fainter than 12.9 mag Dia. 1.0' (40.0-cm reflector 257x)
Not visible.
C/2012 K1 ( PanSTARRS )
8.2 mag Dia. 8' DC 6 (40.0-cm reflector 36x)
Now it locates extremely low in the South. Bright, well condensed and easy to see as before.
C/2013 A1 ( Siding Spring )
11.0 mag Dia. 1.5' DC 5 (40.0-cm reflector 144x)
It has passed near by Mars just one week ago. Well visible.
C/2013 US10 ( Catalina )
14.3 mag Dia. 0.4' DC 6 (40.0-cm reflector 257x)
Tiny. Looks similar to a faint star.
C/2014 E2 ( Jacques )
12.0 mag Dia. 1.2' DC 3 (40.0-cm reflector 144x)
It faded very much in one month. It will be too hard to see among many background stars soon.
P/2014 L2 ( NEOWISE )
fainter than 13.7 mag Dia. 0.8' (40.0-cm reflector 257x)
Not visible.
C/2014 Q2 ( Lovejoy )
12.1 mag Dia. 1.2' DC 3 (40.0-cm reflector 144x)
Difficult to guide my telescope to the position because it locates extremely low and there are too many stars around the position. It looks diffuse with weak condensation.
C/2014 Q3 ( Borisov )
12.0 mag Dia. 1.9' DC 3 (40.0-cm reflector 75x)
As already reported, fairly bright!
C/2014 R1 ( Borisov )
12.0 mag Dia. 1.3' DC 2 (40.0-cm reflector 144x)
Diffuse, but fairly bright unexpectedly.
4P/Faye
14.3 mag Dia. 0.6' DC 3 (40.0-cm reflector 257x)
Still visible.
32P/Comas Sola
14.1 mag Dia. 0.7' DC 3 (40.0-cm reflector 257x)
Fainter than predicted.
108P/Ciffreo
fainter than 14.2 mag Dia. 0.3' (40.0-cm reflector 257x)
Not visible.
117P/Helin-Roman-Alu 1
13.5 mag Dia. 0.5' DC 3 (40.0-cm reflector 257x)
Hard to see.
284P/McNaught
14.1 mag Dia. 0.7' DC 4 (40.0-cm reflector 257x)
Still visible unexpectedly.
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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.
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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. |