Masahiro Koishikawa

Masahiro Koishikawa (小石川 正弘, Koishikawa Masahiro; 1952 – 26 August 2020) was a Japanese astronomer. He studied both major and minor planets, and discovered multiple asteroids. Koishikawa was a staff member of the Sendai Astronomical Observatory frin 1972. His research was based out of the Sendai's Ayashi (391) station. The main-belt asteroid 6097 Koishikawa, discovered by Kin Endate and Kazuro Watanabe at Kitami in 1991, was named in his honor. He died on 26 August 2020 from lung cancer.

Source: “Masahiro Koishikawa”, English Wikipedia (CC BY-SA 4.0), excerpt