solar apex The point on the celestial sphere, in the constellation Hercules, toward which the Sun is moving with respect to the local standard of rest at a rate of about 19.4 km/s (about 4.09 AU/year). The point directly opposite this is called the solar antapex and lies in the constellation Columba. Related category • CELESTIAL MECHANICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |