Package org.orekit.propagation.semianalytical.dsst.forces

Class DSSTJ2SquaredClosedFormContext

java.lang.Object
org.orekit.propagation.semianalytical.dsst.forces.ForceModelContext
org.orekit.propagation.semianalytical.dsst.forces.DSSTJ2SquaredClosedFormContext
public class DSSTJ2SquaredClosedFormContext extends ForceModelContext
This class is a container for the common parameters used in DSSTJ2SquaredClosedForm.

It performs parameters initialization at each integration step for the second-order J2-squared contribution to the central body gravitational perturbation.

Since:
12.0
Author:
Bryan Cazabonne

  • Constructor Details

    • DSSTJ2SquaredClosedFormContext

      public DSSTJ2SquaredClosedFormContext(AuxiliaryElements auxiliaryElements, UnnormalizedSphericalHarmonicsProvider provider)
      Simple constructor.
      Parameters:
      auxiliaryElements - auxiliary elements related to the current orbit
      provider - provider for spherical harmonics

  • Method Details

    • getAlpha4

      public double getAlpha4()
      Get the equatorial radius of the central body to the power 4.
      Returns:
      the equatorial radius of the central body to the power 4

    • getA4

      public double getA4()
      Get the semi major axis to the power 4.
      Returns:
      the semi major axis to the power 4

    • getEta

      public double getEta()
      Get the eta value.
      Returns:
      sqrt(1 - e * e)

    • getC

      public double getC()
      Get the cosine of the inclination.
      Returns:
      the cosine of the inclination

    • getS2

      public double getS2()
      Get the sine of the inclination to the power 2.
      Returns:
      the sine of the inclination to the power 2