Named in memory of Jan Marcus Marci of Kronland (1595-1667), Czech physicist, mathematician, astronomer and physician at the Charles University in Prague during the Thirty Years War. Twenty years before Newton, Marci thoroughly described the spectral dispersion and diffraction of light, color effects on thin layers and rainbow colors. He also studied elastic and inelastic collisions of spheres, the motion of a pendulum and tried to solve the problem of squaring the circle. Name suggested by J. Ticha and M. Šolc.