Package org.orekit.orbits

Class KeplerianMotionCartesianUtility

java.lang.Object

org.orekit.orbits.KeplerianMotionCartesianUtility

public class KeplerianMotionCartesianUtility
extends Object

Utility class to predict position and velocity under Keplerian motion, using lightweight routines based on Cartesian coordinates. Computations do not require a reference frame or an epoch.

Since:

12.1

Author:

Andrew Goetz, Romain Serra, Alberto Fossa'

See Also:

• KeplerianPropagator
• FieldKeplerianPropagator
• CartesianOrbit
• FieldCartesianOrbit

Method Summary

Modifier and Type	Method	Description
static PVCoordinates	predictPositionVelocity(double dt, Vector3D position, Vector3D velocity, double mu)	Method to propagate position and velocity according to Keplerian dynamics.
static <T extends CalculusFieldElement<T>> FieldPVCoordinates<T>	predictPositionVelocity(T dt, FieldVector3D<T> position, FieldVector3D<T> velocity, T mu)	Method to propagate position and velocity according to Keplerian dynamics.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

predictPositionVelocity

public static PVCoordinates predictPositionVelocity(double dt,
 Vector3D position,
 Vector3D velocity,
 double mu)

Method to propagate position and velocity according to Keplerian dynamics. For long time of flights, it is preferable to use KeplerianPropagator.

Parameters:

dt - time of flight

position - initial position vector

velocity - initial velocity vector

mu - central body gravitational parameter

Returns:

predicted position-velocity

predictPositionVelocity

public static <T extends CalculusFieldElement<T>>
FieldPVCoordinates<T> predictPositionVelocity(T dt,
 FieldVector3D<T> position,
 FieldVector3D<T> velocity,
 T mu)

Method to propagate position and velocity according to Keplerian dynamics. For long time of flights, it is preferable to use KeplerianPropagator.

Type Parameters:

T - field type

Parameters:

dt - time of flight

position - initial position vector

velocity - initial velocity vector

mu - central body gravitational parameter

Returns:

predicted position-velocity