Career
He is a prolific discoverer of asteroids. He has worked extensively at the Kuma Kogen Astronomical Observatory near Kuma, Ehime Prefecture, where he remains a staff member. His observations of asteroid brightness are well known.
The asteroid 10633 Akimasa (1998 DP1), orbiting between Mars and Jupiter, is named after him and was named in 1999 to coincide with his becoming a father.
He named 9081 Hideakianno after Japanese animation and film director, Hideaki Anno.
