ephemeris A tabulation of the prediction positions of a celestial object in an orderly sequence for a number of dates. An ephemeris may also list distances of an object from the Sun and/or Earth, as well as magnitudes. Sets of ephemerides are published annually in almanacs. Related categories • CELESTIAL MECHANICS • ASTRONOMICAL CATALOGS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |