Also called Celestial Longitude. The degrees of the ecliptic where a planet might be placed according to its sign placement. A Planet at 15 degrees Aries is at 15 degrees Absolute Longitude whereas one at 15 degrees Libra is at 195 degrees Absolute Longitude (Libra being placed at 180 degrees) Absolute longitude can be calculated either from a heliocentric or geocentric perspective.
Comments: Absolute Longitude