1985 HC. Discovered 1985 Apr. 23 by C. S. Shoemaker and E. M. Shoemaker at Palomar.

Named in honor of Luis W. Alvarez {1911-1988}, physicist and Nobel laureate, and his son Walter Alvarez, geologist, both on the faculty of the University of California at Berkeley. The Alvarezes headed a team that discovered a global geochemical anomaly of noble metals at the Cretaceous-Tertiary boundary. They propounded the theory that a mass extinction of living species at the end of the Cretaceous period was triggered by impact of an asteroid or a comet about 10 km in diameter. Their work has stimulated intensive international research on the possible relationships between large body impacts and the evolution of life. (M 12807)

Obituary (L.W.A.) published in Phys. Bl., Jahrg. 45, Heft 1, p. 29 (1989).

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