KeplerOrbit Class Reference

Public Member Functions
	KeplerOrbit (double pericenterDistance, double eccentricity, double inclination, double ascendingNode, double argOfPerhelion, double timeAtPerihelion, double orbitGoodDays, double meanMotion, double parentRotObliquity, double parentRotAscendingnode, double parentRotJ2000Longitude, double centralMass=1.0)
virtual void	positionAtTimevInVSOP87Coordinates (double JDE, double *v) Q_DECL_OVERRIDE
	Compute the object position for a specified Julian day. More...
bool	getUpdateTails () const
	updating comet tails is a bit expensive. try not to overdo it.
void	setUpdateTails (const bool update)
virtual Vec3d	getVelocity () const Q_DECL_OVERRIDE
	return speed value [AU/d] last computed by positionAtTimevInVSOP87Coordinates(JDE, v)
virtual void	getVelocity (double *vel) const Q_DECL_OVERRIDE
	write speed value [AU/d] into first 3 elements of vel. (zero in the base class)
virtual double	getSemimajorAxis () const Q_DECL_OVERRIDE
	Returns semimajor axis [AU] for elliptic orbit, 0 for a parabolic orbit, and a negative value [AU] for hyperbolic orbit.
virtual double	getEccentricity () const Q_DECL_OVERRIDE
	return orbit eccentricity. (zero in the base class)
bool	objectDateValid (const double JDE) const
double	calculateSiderealPeriod () const
	Calculate sidereal period in days from semi-major axis and central mass. If SMA<=0 (hyperbolic orbit), return 0.
Public Member Functions inherited from Orbit
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...

Static Public Member Functions
static double	calculateSiderealPeriod (const double semiMajorAxis, const double centralMass)

Additional Inherited Members
Protected Attributes inherited from Orbit
double	rotateToVsop87 [9]

Member Function Documentation

calculateSiderealPeriod()

static double KeplerOrbit::calculateSiderealPeriod ( const double  semiMajorAxis, const double  centralMass  )

static

Parameters

semiMajorAxis	in AU. If SMA<=0 (hyperbolic orbit), return 0.
centralMass	in units of Solar masses

positionAtTimevInVSOP87Coordinates()

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

virtual

Parameters

JDE	Julian Ephemeris Day
v	double vector of at least 3 elements. The first three will receive X/Y/Z values in AU.

Reimplemented from Orbit.