fr.cnes.sirius.patrius.bodies

Class MeeusMoon

java.lang.Object

fr.cnes.sirius.patrius.bodies.AbstractCelestialBody

fr.cnes.sirius.patrius.bodies.MeeusMoon

All Implemented Interfaces:

CelestialBody, PVCoordinatesProvider, Serializable

public class MeeusMoon
extends AbstractCelestialBody

This class implements the Moon ephemerides according to the algorithm of Meeus. It only provides the position. Note that it is not possible to build this Moon from the CelestialBodyFactory.

See "Astronomical Algorithms", chapter 45 "Position of the Moon", Jean Meeus, 1991.

Note that pole information allowing to define inertially-centered frame and rotating frame are defined in IAUPoleFactory since Meeus model does not provide the information.

Since:

1.1

Version:

$Id: MeeusMoon.java 17582 2017-05-10 12:58:16Z bignon $

Author:

Julie Anton

See Also:

CelestialBody, Serialized Form

Concurrency :

immutable

Field Summary

Fields inherited from class fr.cnes.sirius.patrius.bodies.AbstractCelestialBody

CONSTANT_ROTATING_FRAME_NAME, ICRF_FRAME_NAME, INERTIAL_EQUATOR_FRAME_NAME, MEAN_EQUATOR_FRAME_NAME, MEAN_ROTATING_FRAME_NAME, TRUE_EQUATOR_FRAME_NAME, TRUE_ROTATING_FRAME_NAME

Constructor Summary

Constructors

Constructor and Description
MeeusMoon() Simple constructor.
MeeusMoon(int numberOfLongitudeTerms, int numberOfLatitudeTerms, int numberOfDistanceTerms) Simple constructor.

Method Summary

Modifier and Type	Method and Description
Frame	getNativeFrame(AbsoluteDate date, Frame frame) Get the native frame, i.e.
PVCoordinates	getPVCoordinates(AbsoluteDate date, Frame frame) Get the PVCoordinates of the body in the selected frame.
String	toString() Returns a string representation of the body and its attributes.

Methods inherited from class fr.cnes.sirius.patrius.bodies.AbstractCelestialBody

getAttractionModel, getConstantRotatingFrame, getGM, getIAUPole, getICRF, getInertialEquatorFrame, getMeanEquatorFrame, getMeanRotatingFrame, getName, getShape, getTrueEquatorFrame, getTrueRotatingFrame, setAttractionModel, setGM, setIAUPole, setShape

Methods inherited from class java.lang.Object

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

Constructor Detail

MeeusMoon

public MeeusMoon()
          throws PatriusException

Simple constructor.

Throws:

PatriusException - if data embedded in the library cannot be read

MeeusMoon

public MeeusMoon(int numberOfLongitudeTerms,
                 int numberOfLatitudeTerms,
                 int numberOfDistanceTerms)
          throws PatriusException

Simple constructor.

Parameters:

numberOfLongitudeTerms - number of terms taken into account to compute the longitude (up to 62)

numberOfLatitudeTerms - number of terms taken into account to compute the latitude (up to 66)

numberOfDistanceTerms - number of terms taken into account to compute the distance (up to 46)

Throws:

PatriusException - if data embedded in the library cannot be read

Method Detail

getPVCoordinates

public PVCoordinates getPVCoordinates(AbsoluteDate date,
                                      Frame frame)
                               throws PatriusException

Get the PVCoordinates of the body in the selected frame.

Specified by:

getPVCoordinates in interface PVCoordinatesProvider

Specified by:

getPVCoordinates in class AbstractCelestialBody

Parameters:

date - current date

frame - the frame where to define the position

Returns:

position/velocity of the body (m and m/s)

Throws:

PatriusException - if position cannot be computed in given frame

getNativeFrame

public Frame getNativeFrame(AbsoluteDate date,
                            Frame frame)
                     throws PatriusException

Get the native frame, i.e. the raw frame in which PVCoordinates are expressed before transformation to user output frame. This native frame can be dependent on date and frame.

Parameters:

date - a date

frame - a frame

Returns:

the native frame

Throws:

PatriusException - thrown if native frame is undefined or unknown

toString

public String toString()

Returns a string representation of the body and its attributes.

Specified by:

toString in interface CelestialBody

Overrides:

toString in class AbstractCelestialBody

Returns:

a string representation of the body and its attributes