Kōyō Kawanishi
# Kōyō Kawanishi

Minor planets discovered: 13 :

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

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

He lives in the city of Akō in the Hyōgo Prefecture, Japan, where his private Minami-Oda Observatory (374) is located. 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.

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

