The red line is the line of apsides; going through the periapsis (F) and apoapsis (H); this line coincides wíth the major axix in the elliptical shape of the orbit
The green line is the node line; going through the ascending (G) and descending node (E); this is where the reference plane (C) intersects the orbital plane (D).
Raytacing
This image was created using the Persistence of Vision Raytracer and the scene description code found on the page image:Angular Parameters of Elliptical Orbit.png, using View=1 as described on that page.
Beskrivelse (Dansk)
Raytracet billede der demonstrerer periapsisargumentet for et mindre himmellegeme i elliptisk kredsløb om et større.
Billedet er lavet med raytracin-programmet Persistence of Vision Raytracer, samt den scenarie-beskrivelse der er vist på siden Image:Angular Parameters of Elliptical Orbit.png under brug af View=1 som beskrevet på den side