Package org.orekit.propagation.semianalytical.dsst.utilities

Class AuxiliaryElements

  • public class AuxiliaryElements
extends Object
    Container class for common parameters used by all DSST forces.

    Most of them are defined in Danielson paper at § 2.1.

    Author:
    Pascal Parraud

    • Constructor Detail

      • AuxiliaryElements

        public AuxiliaryElements​(Orbit orbit,
                         int retrogradeFactor)
        Simple constructor.
        Parameters:
        orbit - related mean orbit for auxiliary elements
        retrogradeFactor - retrograde factor I [Eq. 2.1.2-(2)]

    • Method Detail

      • getOrbit

        public Orbit getOrbit()
        Get the orbit.
        Returns:
        the orbit

      • getDate

        public AbsoluteDate getDate()
        Get the date of the orbit.
        Returns:
        the date

      • getFrame

        public Frame getFrame()
        Get the definition frame of the orbit.
        Returns:
        the definition frame

      • getEcc

        public double getEcc()
        Get the eccentricity.
        Returns:
        ecc

      • getMeanMotion

        public double getMeanMotion()
        Get the Keplerian mean motion.
        Returns:
        n

      • getKeplerianPeriod

        public double getKeplerianPeriod()
        Get the Keplerian period.
        Returns:
        period

      • getSma

        public double getSma()
        Get the semi-major axis.
        Returns:
        the semi-major axis a

      • getK

        public double getK()
        Get the x component of eccentricity vector.

        This element called k in DSST corresponds to ex for the EquinoctialOrbit

        Returns:
        k

      • getH

        public double getH()
        Get the y component of eccentricity vector.

        This element called h in DSST corresponds to ey for the EquinoctialOrbit

        Returns:
        h

      • getQ

        public double getQ()
        Get the x component of inclination vector.

        This element called q in DSST corresponds to hx for the EquinoctialOrbit

        Returns:
        q

      • getP

        public double getP()
        Get the y component of inclination vector.

        This element called p in DSST corresponds to hy for the EquinoctialOrbit

        Returns:
        p

      • getLM

        public double getLM()
        Get the mean longitude.
        Returns:
        lm

      • getLv

        public double getLv()
        Get the true longitude.
        Returns:
        lv

      • getLf

        public double getLf()
        Get the eccentric longitude.
        Returns:
        lf

      • getRetrogradeFactor

        public int getRetrogradeFactor()
        Get the retrograde factor.
        Returns:
        the retrograde factor I

      • getB

        public double getB()
        Get B = sqrt(1 - e²).
        Returns:
        B

      • getC

        public double getC()
        Get C = 1 + p² + q².
        Returns:
        C

      • getVectorF

        public Vector3D getVectorF()
        Get equinoctial frame vector f.
        Returns:
        f vector

      • getVectorG

        public Vector3D getVectorG()
        Get equinoctial frame vector g.
        Returns:
        g vector

      • getVectorW

        public Vector3D getVectorW()
        Get equinoctial frame vector w.
        Returns:
        w vector

      • getAlpha

        public double getAlpha()
        Get direction cosine α for central body.
        Returns:
        α

      • getBeta

        public double getBeta()
        Get direction cosine β for central body.
        Returns:
        β

      • getGamma

        public double getGamma()
        Get direction cosine γ for central body.
        Returns:
        γ