stella.parameter
Class HjdCorrection

java.lang.Object
  util.PropertyContainer
      util.PropertyResources
          util.PropertyBundles
              stella.parameter.AbstractParameter
                  stella.parameter.AbstractTargetParameter
                      stella.parameter.AbstractTargetValue
                          stella.parameter.HjdCorrection

All Implemented Interfaces:

Cloneable, Parameter, TargetDependingValue, ParameterDepending, TargetDepending, TargetDependingParameter, Value, ExitCleaning, Initializable, LocalizedSupplying, PropertySupplying, Reloadable, ResourceSupplying

public class HjdCorrection
extends AbstractTargetValue
implements ParameterDepending, Reloadable

Represents the current heliocentric correction. The light-time correction is calcualted approximately with VSOP87 data. The solar ecliptical longitude, ra, and dec with the current jd are the parameters the hjd depends on. It is also TargetDependingParameter as the correction also depends on the position within the sky of the object:

   r=q/(1+e·cos(λ-ω0)),
   hjd-jd=r/c·(sinδssinδ+cosδcosδscosΔα)
   

The correction returned is in natural time units, i.e. milliseconds and should be added to jd to gain hjd.

Nested Class Summary

Nested classes/interfaces inherited from class util.PropertyResources

PropertyResources.URLResource

Field Summary

private SolDec	decsol The solar declination.
private DecTarget	dectarget The target declination.
private static String	DEFDECTARGET The default name of the jd parameter.
static String	DEFNAME The name of this global (jd).
private static String	DEFRATARGET The default name of the jd parameter.
private static String	DEFSOLDEC The default name of the jd parameter.
private static String	DEFSOLDISTANCE The default name of the jd parameter.
private static String	DEFSOLRA The default name of the jd parameter.
private static DecimalFormat	df The formatter for the target height.
private SolDistance	distancesol The solar longitude.
private static double	EXCENTRICITY The excentricity of earth's orbit.
static String	KEY_DECTARGET The name of the object-dec paramter.
static String	KEY_RATARGET The name of the object-ra paramter.
static String	KEY_SOLDEC The name of the solar-dec paramter.
static String	KEY_SOLDISTANCE The name of the solar-longitude paramter.
static String	KEY_SOLRA The name of the solar-ra paramter.
private static double	LIGHTSPEED The light speed, in AU/ms.
private static double	PERIHELARGUMENT The perihel distance in AU.
private static double	PERIHELDISTANCE The perihel distance in AU.
private SolRa	rasol The solar right ascension.
private RaTarget	ratarget The target ra.

Fields inherited from class stella.parameter.AbstractTargetParameter

KEY_INDEX

Fields inherited from class stella.parameter.AbstractParameter

KEY_FORMAT, KEY_NAME, KEY_PRESERVE, UNKNOWN

Fields inherited from class util.PropertyBundles

KEY_LOCALECOUNTRY, KEY_LOCALELANGUAGE, KEY_RESOURCEBUNDLES

Fields inherited from class util.PropertyResources

KEY_NOINITONCREATE, localurl, locate, POSTFIX_DIR, POSTFIX_EXT, POSTFIX_FILE, POSTFIX_LIST, POSTFIX_URL, urlset

Fields inherited from class util.PropertyContainer

KEY_LISTSEPARATOR, KEY_MAPKEYVALUECHAR, KEY_MAPSEPARATOR

Fields inherited from interface util.PropertySupplying

CONFIG, KEY_CLASS

Fields inherited from interface util.ResourceSupplying

KEY_URLRESOURCES, KEY_URLUSECONFIG, KEY_URLUSECURRENT, KEY_URLUSEHOME

Constructor Summary

HjdCorrection(Map define)
Constructs a new global representing the heliocentric correction that should be applied to a julian date.

Method Summary

private Double	calculate(Number ra, Number dec) Calculates the helicentric correction for an object at the given sky position in ms.
String	getFormatted(Object myval) Deviates the formatting to the protected version in AbstractParameter.
Number	getForTarget(TargetDefinition target) Gets the heliocentric correction for the specified target
static double	getHjdCorrection(double d, double solra, double solde, double ra, double de) Static access to hjd correction from solar distance, solar right ascension, solar declination, target ra and dec.
Number	getValue() Returns the actual hjd in ms as a double.
void	registerParameter(Parameter add) Registers the additional parameters needed.
void	registerTarget(TargetDefinition target) Registers the target.
double	rescanned(String key, String old, String newval) As any parameter depending instance we fail if the parameter we depend on is now a different one.
Number	setValue(Number val) Sets the jd.

Methods inherited from class stella.parameter.AbstractTargetValue

get, set

Methods inherited from class stella.parameter.AbstractTargetParameter

getAsStar, getConstant, getFormattedFor, getSetup

Methods inherited from class stella.parameter.AbstractParameter

createParameter, delivers, exit, getFormatted, getName, getPreserveFile, getString, getString, init, register, setName, toString

Methods inherited from class util.PropertyBundles

clone, getLocalized, getLocalized, getLocalizedString, getLocalizedString, loadResource

Methods inherited from class util.PropertyResources

createFrom, createFrom, createFrom, getApplet, getAsResources, getLocalClassLoader, getPropertiesToKey, getPropertiesToKey, getResource, getResourceAsStream, getResourceFromKey, getResources, keyCreate, keyCreate, reload, setApplet

Methods inherited from class util.PropertyContainer

augment, augment, augment, defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsEnums, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, isNew, parseObject, reload, removeProperty, setObject, setProperties, setProperty, stringProperties

Methods inherited from class java.lang.Object

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

Methods inherited from interface util.Reloadable

reload

Methods inherited from interface stella.TargetDependingParameter

getFormattedFor

Methods inherited from interface stella.Parameter

getFormatted, getName, getString

Methods inherited from interface util.PropertySupplying

defaultBoolean, defaultChar, defaultDouble, defaultFloat, defaultInt, defaultLong, defaultObject, defaultObject, defaultProperties, defaultProperty, getAsBoolean, getAsChar, getAsDouble, getAsFloat, getAsInt, getAsList, getAsLong, getAsMap, getAsObject, getAsObject, getProperties, getProperty, has, parseObject, removeProperty, setObject, setProperty, stringProperties

Methods inherited from interface util.Initializable

init

Methods inherited from interface util.ResourceSupplying

getResource, getResourceAsStream, getResources

Field Detail

KEY_SOLDISTANCE

public static final String KEY_SOLDISTANCE

The name of the solar-longitude paramter.

See Also:

Constant Field Values

KEY_SOLRA

public static final String KEY_SOLRA

The name of the solar-ra paramter.

See Also:

Constant Field Values

KEY_SOLDEC

public static final String KEY_SOLDEC

The name of the solar-dec paramter.

See Also:

Constant Field Values

KEY_RATARGET

public static final String KEY_RATARGET

The name of the object-ra paramter.

See Also:

Constant Field Values

KEY_DECTARGET

public static final String KEY_DECTARGET

The name of the object-dec paramter.

See Also:

Constant Field Values

DEFNAME

public static final String DEFNAME

The name of this global (jd).

See Also:

Constant Field Values

DEFSOLDISTANCE

private static final String DEFSOLDISTANCE

The default name of the jd parameter.

See Also:

Constant Field Values

DEFSOLRA

private static final String DEFSOLRA

The default name of the jd parameter.

See Also:

Constant Field Values

DEFSOLDEC

private static final String DEFSOLDEC

The default name of the jd parameter.

See Also:

Constant Field Values

DEFRATARGET

private static final String DEFRATARGET

The default name of the jd parameter.

See Also:

Constant Field Values

DEFDECTARGET

private static final String DEFDECTARGET

The default name of the jd parameter.

See Also:

Constant Field Values

df

private static final DecimalFormat df

The formatter for the target height.

PERIHELDISTANCE

private static final double PERIHELDISTANCE

The perihel distance in AU.

See Also:

Constant Field Values

EXCENTRICITY

private static final double EXCENTRICITY

The excentricity of earth's orbit.

See Also:

Constant Field Values

PERIHELARGUMENT

private static final double PERIHELARGUMENT

The perihel distance in AU.

See Also:

Constant Field Values

LIGHTSPEED

private static final double LIGHTSPEED

The light speed, in AU/ms.

See Also:

Constant Field Values

distancesol

private SolDistance distancesol

The solar longitude.

rasol

private SolRa rasol

The solar right ascension.

decsol

private SolDec decsol

The solar declination.

ratarget

private RaTarget ratarget

The target ra.

dectarget

private DecTarget dectarget

The target declination.

Constructor Detail

HjdCorrection

public HjdCorrection(Map define)

Constructs a new global representing the heliocentric correction that should be applied to a julian date.

Method Detail

setValue

public Number setValue(Number val)
                throws UnsupportedOperationException

Sets the jd. Jd is a read-only variable, therefore this method throws an UnsupportedOperationException.

Specified by:

setValue in interface Value

Throws:

UnsupportedOperationException

rescanned

public double rescanned(String key,
                        String old,
                        String newval)

As any parameter depending instance we fail if the parameter we depend on is now a different one.

Specified by:

rescanned in interface Reloadable

Overrides:

rescanned in class AbstractParameter

registerParameter

public void registerParameter(Parameter add)

Registers the additional parameters needed. The helicentric correction needs the solar ecliptical longitude and position (ra, dec) and the target-depending ra/dec.

Specified by:

registerParameter in interface ParameterDepending

registerTarget

public void registerTarget(TargetDefinition target)

Registers the target. Passes the target on to the ra/dec parameters of the target.

Specified by:

registerTarget in interface TargetDepending

getForTarget

public Number getForTarget(TargetDefinition target)

Gets the heliocentric correction for the specified target

Specified by:

getForTarget in interface TargetDependingValue

Specified by:

getForTarget in interface TargetDependingParameter

getValue

public Number getValue()

Returns the actual hjd in ms as a double. The precision should reach ms.

Specified by:

getValue in interface Value

calculate

private Double calculate(Number ra,
                         Number dec)

Calculates the helicentric correction for an object at the given sky position in ms.

getHjdCorrection

public static final double getHjdCorrection(double d,
                                            double solra,
                                            double solde,
                                            double ra,
                                            double de)

Static access to hjd correction from solar distance, solar right ascension, solar declination, target ra and dec. All angles degrees, solar distance in AU. For barycentric correction, the right ascension of the sun and her distance has to be replaced with the appropriate barycentric coordinates.

Parameters:

d - Solar distance in AU.

solra - Right ascension of sun, degrees.

solde - Declination of sun, degrees.

ra - Target ra, degrees.

de - Target de, degrees.

Returns:

HJD-JD in ms.

getFormatted

public String getFormatted(Object myval)

Deviates the formatting to the protected version in AbstractParameter.

Overrides:

getFormatted in class AbstractParameter