was a Japanese amateur astronomer.

He discovered twelve comet

Comet

A comet is an icy small Solar System body that, when close enough to the Sun, displays a visible coma and sometimes also a tail. These phenomena are both due to the effects of solar radiation and the solar wind upon the nucleus of the comet...

s between 1940 and 1968, including the periodic comet 45P/Honda-Mrkos-Pajdušáková

45P/Honda-Mrkos-Pajdusakova

45P/Honda–Mrkos–Pajdušáková is a short-period comet discovered by Minoru Honda December 3, 1948. The comet is named after Minoru Honda, Antonín Mrkos, and Ľudmila Pajdušáková. The comet is on a elliptical orbit with a period of 5.26 years. The comet nucleus is estimated to be 0.5-1.6 kilometers in...

.

He was the first to report the very bright V1500 Cygni

V1500 Cygni

V1500 Cygni or Nova Cygni 1975 was a bright nova occurring in 1975 in the constellation Cygnus.V1500 Cygni was discovered on August 29 and reached magnitude 1.7 on the next day. It remained visible to the naked eye for about a week...

 (Nova Cygni 1975) at magnitude 3.0 on August 29, 1975; it peaked at 2.0, and many hundreds of independent discoveries were subsequently made by others.

The asteroid 3904 Honda

3904 Honda

3904 Honda is a main-belt asteroid discovered on February 22, 1988 by McNaught, R. H. at Siding Spring.The asteroid is named after, Minoru Honda.- External links :*...

 is named after him, 8485 Satoru

8485 Satoru

8485 Satoru is a main-belt asteroid discovered on March 29, 1989 by T. Seki at Geisei. The asteroid is named after, Minoru Honda's wife.- External links :*...

 is named after his wife, and 11442 Seijin-Sanso

11442 Seijin-Sanso

11442 Seijin-Sanso is a main-belt asteroid discovered on October 22, 1976 by H. Kosai and K. Hurukawa at the Kiso Station of the Tokyo Astronomical Observatory.- External links :*...

is named after his astronomical observatory.