jephem.astro
Class Nutation

java.lang.Object
  |
  +--jephem.astro.Nutation

public abstract class Nutation

extends java.lang.Object

Class to compute nutation quantities Dy and De.
Implementation of formulae found in BDL's book p 138.
Coefficients taken from nutation.c, in XEphem

Constructor Summary

Nutation()

Method Summary

static void

calcDeltaPsiEpsilon(double date, double deltaPsi, double deltaEpsilon) Calculates the nutation quantities Dy and De for a given time, in arc seconds.

Methods inherited from class java.lang.Object

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

Constructor Detail

Nutation

public Nutation()

Method Detail

calcDeltaPsiEpsilon

public static void calcDeltaPsiEpsilon(double date,
                                       double deltaPsi,
                                       double deltaEpsilon)

Calculates the nutation quantities Dy and De for a given time, in arc seconds.

Parameters:

deltaPsi - Variable which takes the resulting value of deltaPsi calculation.

deltaEpsilon - Variable which takes the resulting value of deltaEpsilon calculation.