fr.cnes.sirius.patrius.bodies

Class MeeusSun

java.lang.Object

fr.cnes.sirius.patrius.bodies.AbstractCelestialBody

fr.cnes.sirius.patrius.bodies.MeeusSun

All Implemented Interfaces:

CelestialBody, PVCoordinatesProvider, Serializable

public class MeeusSun
extends AbstractCelestialBody

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

See "Astronomical Algorithms", chapter 24 "Solar Coordinates", Jean Meeus, 1991. This class allows the use of three different Meeus model : the standard Meeus model, the STELA one and the on board model (used for CERES mission for instance).

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

Author:

Julie Anton

See Also:

CelestialBody, Serialized Form

Concurrency :

immutable

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MeeusSun.MODEL Enumerate to choose the used Meeus model : standard, Stela or board model.

Field Summary

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

EME2000_FRAME_NAME, ICRF_FRAME_NAME, INERTIAL_FRAME_CONSTANT_MODEL, INERTIAL_FRAME_MEAN_MODEL, INERTIAL_FRAME_TRUE_MODEL, ROTATING_FRAME_CONSTANT_MODEL, ROTATING_FRAME_MEAN_MODEL, ROTATING_FRAME_TRUE_MODEL

Constructor Summary

Constructors

Constructor and Description
MeeusSun() Simple constructor for standard Meeus model.
MeeusSun(MeeusSun.MODEL model) Constructor to build wished Meeus model : standard model, STELA model or board model.

Method Summary

Modifier and Type	Method and Description
static void	resetTransform() Reset cached transform.
String	toString() Returns a string representation of the body and its attributes.
static void	updateTransform(AbsoluteDate date, Frame frame) Update cached transform from FramesFactory.getMOD(boolean) to provided frame.

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

getEME2000, getEphemeris, getGM, getGravityModel, getIAUPole, getICRF, getInertialFrame, getName, getNativeFrame, getPVCoordinates, getRotatingFrame, getShape, setEphemeris, setGM, setGravityModel, setIAUPole, setShape

Methods inherited from class java.lang.Object

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

Constructor Detail

MeeusSun

public MeeusSun()
         throws PatriusException

Simple constructor for standard Meeus model.

Throws:

PatriusException - PatriusException

MeeusSun

public MeeusSun(MeeusSun.MODEL model)
         throws PatriusException

Constructor to build wished Meeus model : standard model, STELA model or board model.

Parameters:

model - Meeus model to be used

Throws:

PatriusException - PatriusException

Method Detail

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

updateTransform

public static void updateTransform(AbsoluteDate date,
                                   Frame frame)
                            throws PatriusException

Update cached transform from FramesFactory.getMOD(boolean) to provided frame. Once called, this transform will always be used when calling AbstractCelestialBody.getPVCoordinates(AbsoluteDate, Frame) unless a call to resetTransform() has been made.

Warning : this method must only be called if the chosen model is the Meeus STELA model.

Parameters:

date - a date

frame - a frame

Throws:

PatriusException - thrown if transformation failed

resetTransform

public static void resetTransform()

Reset cached transform.

Warning : this method must only be called if the chosen model is the Meeus STELA model.