1979 MK2. Discovered 1979 June 25 by E. F. Helin and S. J. Bus at Siding Spring.

Named in honor of Chesley Bonestell {1888–1986}, whose art has inspired generations of astronomers, space enthusiasts and artists. (M 10548)

Name proposed by the first discoverer, following a suggestion from Ronald Paludan.

Obituaries published in Icarus, Vol. 67, No. 3, p. 343–344 (1986); Spaceflight, Vol. 28, Nos. 9/10, p. 355 (1986).