heliographic coordinates The latitude and longitude of a feature on the Sun's surface. Heliographic latitude is an object’s angular distance north or south of the solar equator; heliographic longitude can be measured east or west of the central solar meridian, or given in terms of the Carrington rotation number. Related category SOLAR TOPICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |