Kōyō Kawanishi

Kōyō Kawanishi (川西 浩陽, Kawanishi Kōyō; born January 18, 1959) is a Japanese dentist, amateur astronomer and discoverer of 13 minor planets.^[1][2]

Minor planets discovered: 13^[1]

4106 Nada[1]	March 6, 1989
4797 Ako[1]	September 30, 1989
5401 Minamioda[1]	March 6, 1989
5685 Sanenobufukui[1]	December 8, 1990
5737 Itoh[1]	September 30, 1989
5872 Sugano[1]	September 30, 1989
6155 Yokosugano[1]	November 11, 1990
6557 Yokonomura[1]	November 11, 1990
6559 Nomura[2]	May 3, 1991
7178 Ikuookamoto[1]	November 11, 1990
9580 Tarumi[1]	October 4, 1989
10318 Sumaura[1]	October 15, 1990
14873 Shoyo[2]	October 28, 1990
1 co-discovered with T. Nomura 2 co-discovered with M. Sugano

He lives in the city of Akō in the Hyōgo Prefecture, Japan, where his private Minami-Oda Observatory (374) is located.^[3] At the observatory, he observes comets and minor planets using his home-made 0.20-m reflector telescope together with his wife Kumi and daughter Saki. Familiar with electronics and mechanics, he has also developed his own CCD instrumentation.^[2]

The asteroid 5591 Koyo, discovered by Japanese astronomer Takeshi Urata, was named in his honour.^[2]