Masahiro Koishikawa 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... Wikipedia
Born: 1952
Died: August 26, 2020 (age 68 years), Aoba Ward, Sendai, Miyagi, Japan
Discovered: 3994 Ayashi, 6859 Datemasamune, 6089 Izumi, and more