Claim: The 4383 Suruga was discovered by Y. Oshima at the Gekko Observatory (an astronomical observatory located in the Shizuoka Prefecture, Japan founded in 1957) on December 1, 1989.
Evidence: Y. Oshima 4383 Suruga Gekko Observatory 1 December 1989 Gekko Tenmondai (月光天文台 "Moonlight Observatory") is an astronomical observatory located in the Shizuoka Prefecture, Japan. 1957 Q1499172?uselang=en#P1619 Gekko Observatory