+ Minor planets discovered: 6 4835 Asaeus January 29, 1989 5399 Awa January 29, 1989 5581 Mitsuko February 10, 1989 6383 Tokushima December 12, 1988 9943 Bizan October 29, 1989 27714 Dochu January 29, 1989 with T. Furuta

is a Japanese astronomer from Awa in the Tokushima Prefecture. The Minor Planet Center credits him with the co-discovery of 6 asteroids made together with Japanese astronomer Toshimasa Furuta at the Tokushima-Kainan Astronomical Observatory in 1988 and 1989. He also received the Edgar Wilson Award in 2013 for the discovery of comet C/2013 E2, in 2019 for the discovery of the comets C/2018 V1 and C/2018 Y1, and in 2020 for the discovery of C/2020 A2.

The inner main-belt asteroid 4951 Iwamoto, discovered by astronomers Yoshikane Mizuno and Toshimasa Furuta, was named in his honor on 5 March 1996 ().

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