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Updated on November 17, 2013 |
Go to Seiichi Yoshida's Diary of Comet Observations in 2014. |
2013 Nov. 16 (5 comets)I observed 5 comets visually on Nov. 16 on Mt. Tsukuba, Ibaraki, Japan. It was foggy on the ground, but it was fine on the mountain. Hard to see comets due to the strong full moon light. But many comets located very near by bright stars, so easy to find. I started observations from 3 o'clock. But just before the morning twilight began, the full moon became low and the sky became clear. So I estimated all comets again. C/2012 S1 ( ISON )
C/2012 X1 ( LINEAR )
C/2013 R1 ( Lovejoy )
P/2013 V3 ( Nevski )
2P/Encke
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2013 Nov. 8 (4 comets)
I observed 4 comets visually on Nov. 8 on Mt. Tsukuba, Ibaraki, Japan. Although it was cloudy around 3 o'clock, the weather became fine with no clouds until the morning. But clouds came again from the south after the morning glow began, and covered the whole sky until the sunrise. Many people visited Mt. Tsukuba, probably to observe Comet ISON. C/2012 S1 ( ISON )
C/2012 X1 ( LINEAR )
C/2013 R1 ( Lovejoy )
2P/Encke
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2013 Oct. 11-13 (11 comets)
I observed 11 comets visually between Oct. 11-13 in Kita-karuizawa, Gunma, Japan. The weather kept fine all through the holidays. On Oct. 11, strong wind easily moved my telescope. Half of the sky was covered by heavy clouds. But fortunately, the sky around the comets were clear. The sky was completely fine with no clouds on Oct. 12 and 13. I also observed Nova Del 2013 (V339 Del), a 4-mag naked-eye nova in August, as 10.1 mag on Oct. 11.47 (UT). C/2010 S1 ( LINEAR )
C/2011 J2 ( LINEAR )
C/2011 L4 ( PanSTARRS )
C/2012 F6 ( Lemmon )
C/2012 S1 ( ISON )
P/2013 J2 ( McNaught )
C/2013 N4 ( Borisov )
C/2013 R1 ( Lovejoy )
2P/Encke
154P/Brewington
290P/Jager
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2013 Aug. 19 (1 nova)I observed a bright naked-eye nova discovered by Koichi Itagaki visually on Aug. 19 at home backyard in Ibaraki, Japan. Nova Del 2013
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2013 Apr. 7 (5 comets)I observed 5 comets visually on Apr. 7 on Mt. Tsukuba, Ibaraki, Japan. The sky was fine with no clouds and very clear after the storm. Hard to get in focus with high magnification due to the strong wind. I met several wild boars on the way. C/2006 S3 ( LONEOS )
C/2011 L4 ( PanSTARRS )
C/2011 R1 ( McNaught )
C/2013 E2 ( Iwamoto )
273P/Pons-Gambart
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2013 Feb. 15 (2 comets + 1 asteroid)
I observed 2 comets and an asteroid 2012 DA14 visually on Feb. 15 on Mt. Tsukuba, Ibaraki, Japan. Although it was rainy in daytime, the sky became completely fine around midnight as the weather forecast predicted. Although Tsukuba City was in the dense fog, the sky was clear on Mt. Tsukuba. So I could enjoy the historical close flyby of an asteroid 2012 DA14. I also tried to observe C/2006 S3, but it was blended with a neaby 12 mag star and I could not oberve. C/2011 R1 ( McNaught )
273P/Pons-Gambart
2012 DA14
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Go to Seiichi Yoshida's Diary of Comet Observations in 2012. |