Named for Ole Römer (1644–1710), discoverer of the finite velocity of light and inventor of the transit circle. Born in Aarhus {see planet  (2676)}, he did his best astronomical work in Paris. Later professor of mathematics at the University of Copenhagen, he became extensively involved with terrestrial weights and measures, including the establishment of a temperature scale tied to the freezing and boiling points of water, the definition of the pound, and the measurement of spirit strength. He was also an authority on hydraulics and ballistics, and he served in various civil capacities, including mayor of Copenhagen, master of the mint, and head of the Danish state council. (M 8544) _ _.