astro

Class OrbitModel.Quadrature

java.lang.Object

astro.OrbitModel.Quadrature

Enclosing class:

OrbitModel

public static class OrbitModel.Quadrature
extends Object

Calculates the phases of quadrature, defined as ν=±90, or, if a second argument is given, which is then the argument of periastron, as the times of maximum rv, which follows from the defintion of rv to

  dv/dt=-Ksin(ω+ν)*dν/dt=0
 

to

  ω+ν=0. (dν/dt &neq; 0)
 

From

  M=E-e·sin(E) and 
 tan(ν/2)=±1 =
 sqrt((1+e)/(1-e))·tan(E/2) it follows 

 Φ=(t-t_0)/P=(E-e·sin(E))/2π
 

Constructor Summary

Constructors

Constructor and Description
Quadrature()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] arg) First argument is the time of perihelion passage, t_0, second is eccentricity.

Methods inherited from class java.lang.Object

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

Constructor Detail

Quadrature

public Quadrature()

Method Detail

main

public static void main(String[] arg)

First argument is the time of perihelion passage, t_0, second is eccentricity.