Class Helioecliptic

  • All Implemented Interfaces:
    Serializable, Component

    public class Helioecliptic
    extends Ecliptic
    implements Component
    A helioecliptic coordinate system at a given epoch. This gives a coordinate system where the Sun is at the center of the coordinate system. We assume that the same epoch is to be used to get the position of the Sun and the basis Ecliptic coordinate system.
    See Also:
    Serialized Form
    • Constructor Detail

      • Helioecliptic

        public Helioecliptic​(double epoch)
        Get a coordinate system at a given epoch.
        Parameters:
        epoch - The desired epoch
    • Method Detail

      • sunlong

        public static double sunlong​(double epoch)
        Find the ecliptic longitude of the Sun at a given epoch. Algorithm derived (and simplified) from the IDL Astronomy library sunpos (C.D. Pike, B. Emerson).
        Parameters:
        epoch - (in years).