1986 XX. Discovered 1986 Dec. 2 by E. Bowell at Anderson Mesa. Named in honor of E. Talmadge Mentall (1927), who retired from a drafting career to join Sky Publishing Corporation in 1994. With his artistic skill and life-long enthusiasm for astronomy, "Tal" soon played a pivotal role in the Millennium Star Atlas (1997), a joint undertaking with the European Space Agency's Hipparcos project. He meticulously drafted all the outlines of nebulae and measured the orientations of 2000 galaxies not available from the literature. (M 31297)

Name proposed by R. W. Sinnott, endorsed by B. G. Marsden and the discoverer.

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