WsfEarthJ2Term¶

WsfEarthJ2Term inherits WsfOrbitalDynamicsTerm

Overview¶

The WsfEarthJ2Term represents the additional acceleration due to the oblateness of the Earth. See also Earth J2 Perturbation.

Static Methods¶

WsfEarthJ2Term Construct()¶: Construct a WsfEarthJ2Term using default values of the gravitational parameter (3.986004415e+14 m^3/s^2), the mean radius of the Earth (6371.0 km), and $J_2$ (0.0010826267).

WsfEarthJ2Term Construct(double aGravitationalParameter, double aMeanRadius, double aJ2)¶: Construct a WsfEarthJ2Term using the given gravitational parameter in SI units, the given mean radius of the Earth in meters, and the given value for $J_2$ .

double DefaultJ2()¶: Return the default value for $J_2$ (0.0010826267).

Methods¶

double GravitationalParameter()¶: Return the gravitational parameter in SI units used by this term.

double MeanRadius()¶: Return the mean radius in meters of the Earth used by this term.

double J2()¶: Return the value of $J_2$ used by this term.

Vec3 ComputeAcceleration(double aMass, Calendar aTime, Vec3 aPosition, Vec3 aVelocity)¶: For the WsfEarthJ2Term this method will return the zero vector; the acceleration provided by this term can only be computed when the dynamics are fully initialized and are in use by a WsfIntegratingSpaceMover.