1989 WF. Discovered 1989 Nov. 17 by K. Endate and K. Watanabe at Kitami.
Named in honor of Kazuo Hayakawa (1919– ), an expert on mineralogy and petrology and professor of engineering at Hokkaigakuen University in Sapporo, Japan. His fields of interest include meteorites, craters and astroblemes. He has written a biography of William S. Clark (1826–1886) and many astrogeological essays. (M 20521)
Name proposed by K. Watanabe. Citation prepared by I. Hasegawa.