The inner main-belt asteroid 4033 Yatsugatake, discovered by Japanese astronomers Masaru Inoue and Osamu Muramatsu in 1986, was named after the Yatsugatake Mountains where this observatory and the Kobuchizawa Observatory (386) are located. The official naming citation was published by the Minor Planet Center on 20 May 1989 (M.P.C. ).