is a Japanese amateur astronomer and prolific discoverer of minor planets. He was born in Hokkaidà Â, Japan and is a member of the Astronomical Society of Japan as well as of the Oriental Astronomical Association.
Through publications and the direction of junior associates, this asteroid hunter has been responsible for the discovery of nearly 700 asteroids, many of them in association with Kin Endate. He is the author or the co-author of the Japanese publications Asteroid Hunter (å°ÂæÂÂæÂÂãÂÂã³ã¿ã¼), Celestial Body Photography Manual (天ä½ÂÃ¥ÂÂçÂÂãÂÂãÂÂãÂ¥ã¢ã«), The Celestial Sky of Our Dreams (Ã¥ÂÂãÂÂã®夢ã®æÂÂ空), as well as others. He also is a frequent contributor to the Japanese periodical Monthly Astronomical Guide (æÂÂÃ¥ÂÂ天æÂÂ㋤ãÂÂ).
The minor planet 4155 Watanabe has been named in his honor.
Kazuo Watanabe is credited by the Minor Planet Center with the discovery of 671 minor planets made between 1987 and 2000.
Some of his discoveries include (in alphabetical order) the minor planets 4263 Abashiri (Florian asteroid), 4585 Ainonai, 46610 Bésixdouze, 5331 Erimomisaki, 3915 Fukushima, 5474 Gingasen (Vestian binary), 9971 Ishihara, 11949 Kagayayutaka, 5481 Kiuchi, 6498 Ko (slow rotator), 6500 Kodaira (a Mars-crosser), 6980 Kyusakamoto (Koronian asteroid), 4607 Seilandfarm (rare-type binary), 5357 Sekiguchi and 5692 Shirao.