Named in honor of Martin J. Duncan (1950– ) of Queen’s University, Kingston, Ontario. Duncan has made several important contributions to the understanding of the origin and dynamical evolution of small bodies in the solar system, particularly comets and the likelihood that they originated in the Kuiper {see planet  (1776)} Belt. He has been involved in the development of two important numerical algorithms that have led to orbital integrations of unprecedented duration. (M 27461) _ _.