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java.lang.Object org.jscience.astronomy.AstronomyConstants
public final class AstronomyConstants
The AstronomyConstants class provides several useful constatnts for astronomy.
Field Summary  

static double 
AU
Length of an Astronomical Unit, in meters. 
static double 
EARTH_DAY
Length of day in seconds. 
static double 
EARTH_YEAR
A earth year in days. 
static double 
GAUSSIAN_GRAVITATIONAL_CONSTANT
Gaussian Gravitational Constant in A3/2S1/2D1 with length A: astronomical unit (the mean axis of the orbit of the Earth around the Sun); time D: mean solar day (the mean rotation period of the Earth around its axis, with respect to the Sun); mass S: the mass of the Sun. 
static double 
GAUSSIAN_YEAR
Gaussian year in (earth) days (defined). 
static double 
HOUR
Length of the standard hour in seconds. 
static double 
JULIAN_YEAR
Length of a Julian year (defined) in (earth) days. 
static double 
LIGHT_YEAR
Length of a (Julian) light year (defined), in meters. 
static double 
MINUTE
Length of the standard minute in seconds (duration of 9,192,631,770 cycles of microwave light absorbed or emitted by the hyperfine transition of cesium133 atoms in their ground state undisturbed by external fields). 
static double 
PARSEC
Length of a parsec, in meters. 
static double 
SIDERAL_DAY
Length of sideral day in seconds. 
static double 
SIDERAL_YEAR
A earth sideral year in (earth) days (at the epoch J2000 = 1 Jan. 2000 12h Terrestrial Time). 
static double 
TROPICAL_YEAR
A earth tropical year in (earth) days, or the period for the Earth to complete one revolution with respect to the framework provided by the intersection of the ecliptic (the plane of the orbit of the Earth) and the plane of the equator (the plane perpendicular to the rotation axis of the Earth). 
Constructor Summary  

AstronomyConstants()

Method Summary 

Methods inherited from class java.lang.Object 

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

public static final double AU
public static final double PARSEC
public static final double LIGHT_YEAR
public static final double EARTH_YEAR
public static final double SIDERAL_YEAR
public static final double TROPICAL_YEAR
public static final double JULIAN_YEAR
public static final double SIDERAL_DAY
public static final double MINUTE
public static final double HOUR
public static final double EARTH_DAY
public static final double GAUSSIAN_GRAVITATIONAL_CONSTANT
public static final double GAUSSIAN_YEAR
Constructor Detail 

public AstronomyConstants()


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