org.graalvm.shadowed.com.ibm.icu.impl

Class CalendarAstronomer.Ecliptic

java.lang.Object

org.graalvm.shadowed.com.ibm.icu.impl.CalendarAstronomer.Ecliptic

Enclosing class:

CalendarAstronomer

public static final class CalendarAstronomer.Ecliptic
extends Object

Represents the position of an object in the sky relative to the ecliptic, the plane of the earth's orbit around the Sun. This is a spherical coordinate system in which the latitude specifies the position north or south of the plane of the ecliptic. The longitude specifies the position along the ecliptic plane relative to the "First Point of Aries", which is the Sun's position in the sky at the Vernal Equinox.

Note that Ecliptic objects are immutable and cannot be modified once they are constructed. This allows them to be passed and returned by value without worrying about whether other code will modify them.

See Also:

CalendarAstronomer.Equatorial, CalendarAstronomer.Horizon

Field Summary

Fields

Modifier and Type	Field and Description
double	latitude The ecliptic latitude, in radians.
double	longitude The ecliptic longitude, in radians.

Constructor Summary

Constructors

Constructor and Description
Ecliptic(double lat, double lon) Constructs an Ecliptic coordinate object.

Method Summary

Modifier and Type	Method and Description
String	toString() Return a string representation of this object

Methods inherited from class java.lang.Object

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

Field Detail

latitude

public final double latitude

The ecliptic latitude, in radians. This specifies an object's position north or south of the plane of the ecliptic, with positive angles representing north.

longitude

public final double longitude

The ecliptic longitude, in radians. This specifies an object's position along the ecliptic plane relative to the "First Point of Aries", which is the Sun's position in the sky at the Vernal Equinox, with positive angles representing east.

A bit of trivia: the first point of Aries is currently in the constellation Pisces, due to the precession of the earth's axis.

Constructor Detail

Ecliptic

public Ecliptic(double lat,
                double lon)

Constructs an Ecliptic coordinate object.

Parameters:

lat - The ecliptic latitude, measured in radians.

lon - The ecliptic longitude, measured in radians.

Method Detail

toString

public String toString()

Return a string representation of this object

Overrides:

toString in class Object