utility
Class MoonAge

java.lang.Object
  utility.MoonAge

public class MoonAge
extends java.lang.Object

Field Summary

static double	DEG_IN_RADIAN
static double	EIGHTH_OF_MONTH
static double	PERIOD

Constructor Summary

MoonAge()

Method Summary

static int	daysOld(double age)
static void	flmoon(int n, int nph, JulianDate jdout) Gives jd (+- 2 min) of phase nph on lunation n; replaces less accurate Numerical Recipes routine.
static double	lunAge(JulianDate jd, int nlun) compute age in days of moon since last new, and lunation of last new moon.
static void	main(java.lang.String[] args)
static java.lang.String	moonPhase(JulianDate jd) gives the days since last new moon, or New, 1st Qrt, Full, and 3rd Qtr, as appropiate

Methods inherited from class java.lang.Object

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

Field Detail

DEG_IN_RADIAN

public static final double DEG_IN_RADIAN

See Also:

Constant Field Values

EIGHTH_OF_MONTH

public static final double EIGHTH_OF_MONTH

See Also:

Constant Field Values

PERIOD

public static final double PERIOD

See Also:

Constant Field Values

Constructor Detail

MoonAge

public MoonAge()

Method Detail

main

public static void main(java.lang.String[] args)

lunAge

public static double lunAge(JulianDate jd,
                            int nlun)

compute age in days of moon since last new, and lunation of last new moon.

flmoon

public static void flmoon(int n,
                          int nph,
                          JulianDate jdout)

Gives jd (+- 2 min) of phase nph on lunation n; replaces less accurate Numerical Recipes routine. This routine implements formulae found in Jean Meeus' *Astronomical Formulae for Calculators*, 2nd edition, Willman-Bell. A very useful book!!

n, nph lunation and phase; nph = 0 new, 1 1st, 2 full, 3 last jdout jd of requested phase

daysOld

public static int daysOld(double age)

moonPhase

public static java.lang.String moonPhase(JulianDate jd)

gives the days since last new moon, or New, 1st Qrt, Full, and 3rd Qtr, as appropiate