TCP J21314718+3825463
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TCP J21314718+3825463
(k_kubotera, 2025/11/18 7:56)
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Re: TCP J21314718+3825463
(k_kubotera, 2025/11/20 10:20)
k_kubotera
投稿数: 4748
投稿数: 4748
11月15日にCBAベルギー天文台のTonny Vanmunster氏からVS-NETにアラートされたSU UMa型矮新星です。通常は、22等くらいらしいですが、増光のためなんとか捕らえることができました。透明度が今ひとつで、かろうじて測光できました。Vフィルタをつけるとシーイングによっては、ほとんど写らず、星像検出にかからないのでNo Filterです。
さすがに16等台の測光は、測定誤差も大きいですが、ゆるやかに74分(0.054日)ほどの周期で振幅0.4等ほどで変光しているように見えます。
This is an SU UMa-type dwarf nova that was alerted to VS-NET by Tonny Vanmunster of the CBA Belgian Observatory on November 15th. It is said to normally be around magnitude 22, but due to increased brightness we managed to capture it. The transparency was not great, so we were just able to measure it. With a V filter, depending on the seeing, it was barely visible and the star image was not detected, so we used no filter.
As expected, photometry at around magnitude 16 has a large measurement error, but it appears to be varying gently with an amplitude of about 0.4 magnitude, with a period of about 74 minutes (0.054 days).


K.Kubotera (VSOLJ code "Kub")
Japan
さすがに16等台の測光は、測定誤差も大きいですが、ゆるやかに74分(0.054日)ほどの周期で振幅0.4等ほどで変光しているように見えます。
This is an SU UMa-type dwarf nova that was alerted to VS-NET by Tonny Vanmunster of the CBA Belgian Observatory on November 15th. It is said to normally be around magnitude 22, but due to increased brightness we managed to capture it. The transparency was not great, so we were just able to measure it. With a V filter, depending on the seeing, it was barely visible and the star image was not detected, so we used no filter.
As expected, photometry at around magnitude 16 has a large measurement error, but it appears to be varying gently with an amplitude of about 0.4 magnitude, with a period of about 74 minutes (0.054 days).
K.Kubotera (VSOLJ code "Kub")
Japan
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久保寺克明
k_kubotera
投稿数: 4748
投稿数: 4748
11/19 18時、快晴、透明度は17日よりもよかったのですが、シンチレーションはありました。明確な変動を捕らえられませんでした。後半、70分ほどの周期性がわすがに見られました。


11/19 6pm, clear skies, better visibility than the 17th, but there was some scintillation. No clear fluctuations were detected. In the latter half, a periodicity of about 70 minutes was faintly observed.
K.Kubotera (vsolj code Kub)
11/19 6pm, clear skies, better visibility than the 17th, but there was some scintillation. No clear fluctuations were detected. In the latter half, a periodicity of about 70 minutes was faintly observed.
K.Kubotera (vsolj code Kub)
--
☆☆☆彡
久保寺克明