Prof. Masaru Mukai of Kyoto University of Information Studies (KCGI) appeared in the Nihon Keizai Shimbun February 19, 2017 morning edition (Science) special feature article "Unknown 9th Planet Great Search" and commentary was published. It was.
In the article, there is a possibility that another planet may exist outside of Neptune, outside of eight planets currently in existence, such as Mercury, Venus, and Earth (Pluto was demoted to quasiplanet in 2006). It is said that full-scale observation is continued using a Subaru Telescope at a certain NAOJ.Professor Mukai Tadashi announced at the time in 2008 that he was an emeritus professor at Kobe University.In this article, I comment on why the 9th planet is in that position and the significance of these studies.
Professor Mukai was a full member of the Astronomical Society of Japan and was once the president of the Planetary Society of Japan.KCGI and KCG (Kyoto Computer Gakuin) are in charge of lectures related to data mining.