org.stellarium.astro
Class Nutation

java.lang.Object
  org.stellarium.astro.Nutation

 class Nutation
extends java.lang.Object

Nested Class Summary

static class	Nutation.lnNutation arguments and coefficients taken from table 21A on page 133
static class	Nutation.nutationArguments
static class	Nutation.nutationCoefficients

Field Summary

(package private) static Nutation.nutationArguments[]	arguments
(package private) static double	c_ecliptic cache values
(package private) static double	c_JD cache values
(package private) static double	c_longitude cache values
(package private) static double	c_obliquity cache values
(package private) static Nutation.nutationCoefficients[]	coefficients
static double	LN_NUTATION_EPOCH_THRESHOLD
static int	TERMS

Constructor Summary

Nutation()

Method Summary

(package private) static Nutation.lnNutation

getNutation(double JD) Calculate nutation of longitude and obliquity in degrees from Julian Ephemeris Day

Methods inherited from class java.lang.Object

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

Field Detail

TERMS

public static final int TERMS

See Also:

Constant Field Values

LN_NUTATION_EPOCH_THRESHOLD

public static final double LN_NUTATION_EPOCH_THRESHOLD

See Also:

Constant Field Values

arguments

static final Nutation.nutationArguments[] arguments

coefficients

static final Nutation.nutationCoefficients[] coefficients

c_JD

static double c_JD

cache values

c_longitude

static double c_longitude

cache values

c_obliquity

static double c_obliquity

cache values

c_ecliptic

static double c_ecliptic

cache values

Constructor Detail

Nutation

Nutation()

Method Detail

getNutation

static Nutation.lnNutation getNutation(double JD)

Calculate nutation of longitude and obliquity in degrees from Julian Ephemeris Day

Parameters:

JD - Julian Day

Returns:

Stored nutation. Chapter 21 pg 131-134 Using Table 21A