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Bond, Igor Soszy\\'nski, In-Gu Shin, Iona Kondo, Jan Skowron, Jennifer C. Yee, Krzysztof A. Rybicki, Krzysztof Ulaczyk, Kyu-Ha Hwang, Man Cheung Alex Li, Marcin Wrona, Martin Donachie, Masayuki Nagakane, Michael D. Albrow, Micha{\\l} K. Szyma\\'nski, Naoki Koshimoto, Nicholas J. Rattenbury, Patryk Iwanek, Paul J. Tristram, Pawe{\\l} Pietrukowicz, Przemek Mr\\'oz, Radek Poleski, Richard Barry, Richard W. Pogge, Sang-Mok Cha, Seung-Lee Kim, Shota Miyazaki, Sun-Ju Chung, Szymon Koz{\\l}owski, Takahiro Sumi, Takeharu Yamakawa, Tsubasa Yamamwaki, Weicheng Zang, Yasushi Muraki, Yongseok Lee, Yoon-Hyun Ryu, Yoshitaka Itow, Yossi Shvartzvald, Youn Kil Jung, Yukei Kamei, Yuki Hirao, Yuki Satoh, Yutaka Matsubara","submitted_at":"2019-12-09T02:37:12Z","abstract_excerpt":"We report the discovery of a cold planet with a very low planet/host mass ratio of $q=(4.09\\pm0.27) \\times 10^{-5}$, which is similar to the ratio of Uranus/Sun ($q=4.37 \\times 10^{-5}$) in the Solar system. 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