KSNumbers Class Reference

There are several time-dependent values used in position calculations, that are not specific to an object. More...

#include <ksnumbers.h>

List of all members.

Public Member Functions
dms	constAberr () const
double	dEcLong () const
double	dObliq () const
double	earthEccentricity () const
dms	earthPerihelionLongitude () const
double	julianCenturies () const
long double	julianDay () const
double	julianMillenia () const
	KSNumbers (long double jd)
const dms *	obliquity () const
double	p1 (int i1, int i2) const
double	p1b (int i1, int i2) const
double	p2 (int i1, int i2) const
double	p2b (int i1, int i2) const
dms	sunMeanAnomaly () const
dms	sunMeanLongitude () const
dms	sunTrueAnomaly () const
dms	sunTrueLongitude () const
void	updateValues (long double jd)
double	vEarth (int i) const
	~KSNumbers ()

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Detailed Description

There are several time-dependent values used in position calculations, that are not specific to an object.

This class provides storage for these values, and methods for calculating them for a given date. The numbers include solar data like the true/mean solar anomalies and longitudes, the longitude of the Earth's perihelion, the eccentricity of Earth's orbit, the constant of aberration, the obliquity of the Ecliptic, the effects of Nutation (delta Obliquity and delta Ecliptic longitude), the Julian Day/Century/Millenium, and arrays for computing the precession. Store several time-dependent astronomical quantities.

Author:

Jason Harris

Version:

1.0

Definition at line 43 of file ksnumbers.h.

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Constructor & Destructor Documentation

KSNumbers::KSNumbers

(

long double

jd

)

Constructor.

Definition at line 156 of file ksnumbers.cpp.

KSNumbers::~KSNumbers

(

)

Destructor (empty).

Definition at line 161 of file ksnumbers.cpp.

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Member Function Documentation

dms KSNumbers::constAberr

(

)

const [inline]

Returns:

the constant of aberration (20.49 arcsec).

Definition at line 56 of file ksnumbers.h.

double KSNumbers::dEcLong

(

)

const [inline]

Returns:

the change in Ecliptic Longitude due to nutation. Value is in degrees.

Definition at line 82 of file ksnumbers.h.

double KSNumbers::dObliq

(

)

const [inline]

Returns:

the change in obliquity due to the nutation of Earth's orbit. Value is in degrees

Definition at line 78 of file ksnumbers.h.

double KSNumbers::earthEccentricity

(

)

const [inline]

Returns:

eccentricity of Earth's orbit.

Definition at line 74 of file ksnumbers.h.

dms KSNumbers::earthPerihelionLongitude

(

)

const [inline]

Returns:

the longitude of the Earth's perihelion point.

Definition at line 71 of file ksnumbers.h.

double KSNumbers::julianCenturies

(

)

const [inline]

Returns:

Julian centuries since J2000

Definition at line 85 of file ksnumbers.h.

long double KSNumbers::julianDay

(

)

const [inline]

Returns:

Julian Day

Definition at line 88 of file ksnumbers.h.

double KSNumbers::julianMillenia

(

)

const [inline]

Returns:

Julian Millenia since J2000

Definition at line 91 of file ksnumbers.h.

const dms* KSNumbers::obliquity

(

)

const [inline]

Returns:

the current Obliquity (the angle of inclination between the celestial equator and the ecliptic)

Definition at line 53 of file ksnumbers.h.

double KSNumbers::p1	(	int	i1,
		int	i2
	)			const [inline]

Returns:

element of P1 precession array at position [i1][i2]

Definition at line 94 of file ksnumbers.h.

double KSNumbers::p1b	(	int	i1,
		int	i2
	)			const [inline]

Returns:

element of P1B precession array at position [i1][i2]

Definition at line 100 of file ksnumbers.h.

double KSNumbers::p2	(	int	i1,
		int	i2
	)			const [inline]

Returns:

element of P2 precession array at position [i1][i2]

Definition at line 97 of file ksnumbers.h.

double KSNumbers::p2b	(	int	i1,
		int	i2
	)			const [inline]

Returns:

element of P2B precession array at position [i1][i2]

Definition at line 103 of file ksnumbers.h.

dms KSNumbers::sunMeanAnomaly

(

)

const [inline]

Returns:

the mean solar anomaly.

Definition at line 59 of file ksnumbers.h.

dms KSNumbers::sunMeanLongitude

(

)

const [inline]

Returns:

the mean solar longitude.

Definition at line 62 of file ksnumbers.h.

dms KSNumbers::sunTrueAnomaly

(

)

const [inline]

Returns:

the true solar anomaly.

Definition at line 65 of file ksnumbers.h.

dms KSNumbers::sunTrueLongitude

(

)

const [inline]

Returns:

the true solar longitude.

Definition at line 68 of file ksnumbers.h.

void KSNumbers::updateValues

(

long double

jd

)

update all values for the date given as an argument.

Parameters:

jd

the Julian date for which to compute values

Contibutions to the velocity of the Earth referred to the barycenter of the solar system in the J2000 equatorial system Velocities 10^{-8} AU/day Ron & Vondrak method

Definition at line 164 of file ksnumbers.cpp.

double KSNumbers::vEarth

(

int

i

)

const [inline]

Definition at line 110 of file ksnumbers.h.

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The documentation for this class was generated from the following files:

• ksnumbers.h
• ksnumbers.cpp