Shun-ei Izumikawa (泉川 俊英, Izumikawa Shun'ei) is a Japanese astronomer and co-discoverer of 5239 Reiki and 27748 Vivianhoette, two main-belt asteroids he first observed together with astronomer Osamu Muramatsu at the Yatsugatake South Base Observatory (896) near Hokuto, Yamanashi, in 1990 and 1991.
[1] The asteroids were named for Japanese amateur astronomer Reiki Kushida and American Vivian Hoette from the U.S. Yerkes Observatory, respectively.
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