Orbit Class Reference

Public Member Functions
virtual void	positionAtTimevInVSOP87Coordinates (double JDE, double *v)
	Return a position (XYZ in AU). More...
virtual Vec3d	getVelocity () const
	return speed value [AU/d]. (zero in the base class)
virtual void	getVelocity (double *vel) const
	write speed value [AU/d] into first 3 elements of vel. (zero in the base class)
virtual double	getSemimajorAxis () const
	return semimajor axis. (zero in the base class)
virtual double	getEccentricity () const
	return orbit eccentricity. (zero in the base class)
void	setParentOrientation (const double parentRotObliquity, const double parentRotAscendingNode, const double parentRotJ2000Longitude)
	For planet moons which have orbits given in relation to their parent planet's equator. More...

Protected Attributes
double	rotateToVsop87 [9]

Member Function Documentation

positionAtTimevInVSOP87Coordinates()

virtual void Orbit::positionAtTimevInVSOP87Coordinates ( double  JDE, double *  v  )

inlinevirtual

Return a position (XYZ in AU).

Parameters

JDE	Julian Ephemeris Date
v	double array of at least 3 elements. The first three should be filled by the X/Y/Z data.

Reimplemented in GimbalOrbit, and KeplerOrbit.

setParentOrientation()

void Orbit::setParentOrientation	(	const double	parentRotObliquity,
		const double	parentRotAscendingNode,
		const double	parentRotJ2000Longitude
	)

For planet moons which have orbits given in relation to their parent planet's equator.

This is called by the constructor, and must be updated for parent planets when their axis changes over time.