Heliocentric Longitude

This article is about heliocentric longitude. This system places the viewer in an above-the-solar-system viewpoint, tracking the planets in their near-circular orbits around the Sun. This s... See More

This article is about heliocentric longitude. This system places the viewer in an above-the-solar-system viewpoint, tracking the planets in their near-circular orbits around the Sun. This system is different from the system that uses the equatorial star chart. This is a coordinate system where planets are plotted on polar graph paper using degrees ranging from 0 to 360. To further understand this system one needs to go to Figure 3 that shows how the planets are plotted. There are several questions with answers to help understand how this charting works.