1990 XJ. Discovered 1990 Dec. 15 by E. F. Helin at Palomar.

Named in honor of Bruce C. Murray, professor of planetary science at the California Institute of Technology and former director of the NASA/Caltech Jet Propulsion Laboratory. As a co-founder of The Planetary Society, he has been instrumental in making science accessible and understandable to the general public. This minor planet is a deep Mars-crosser, coming within 0.2 AU of the earth at perihelion, and it is a particularly appropriate object for Murray, who has so diligently championed a mission to Mars. Future spacecraft missions could flyby or rendezvous with (4957) on the way to Mars. This tribute to 'BC' is hailed by his family, friends and colleagues. (M 22829)

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