Package org.orekit.frames

Class EOPEntry

java.lang.Object

org.orekit.frames.EOPEntry

All Implemented Interfaces:

Serializable, TimeStamped

public class EOPEntry
extends Object
implements TimeStamped, Serializable

This class holds an Earth Orientation Parameters entry.

Author:

Luc Maisonobe

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
EOPEntry(int mjd, double dt, double lod, double x, double y, double xRate, double yRate, double ddPsi, double ddEps, double dx, double dy, ITRFVersion itrfType, AbsoluteDate date, EopDataType eopDataType)	Constructor from raw elements.
EOPEntry(int mjd, double dt, double lod, double x, double y, double xRate, double yRate, double ddPsi, double ddEps, double dx, double dy, ITRFVersion itrfType, AbsoluteDate date, EopDataType eopDataType, int dtPub, int nutPub, int cipPub)	Constructor from raw elements.
EOPEntry(EOPEntry entry1, EOPEntry entry2)	Combination constructor.

Method Summary

Modifier and Type	Method	Description
int	getCipPub()	Get the publication date for Celestial Intermediate Pole (modified Julian day).
AbsoluteDate	getDate()	Get the date.
double	getDdEps()	Get the correction for nutation in obliquity δΔε.
double	getDdPsi()	Get the correction for nutation in longitude δΔΨ.
int	getDtPub()	Get the publication date for X, Y, UT1-UTC and LOD (modified Julian day).
double	getDx()	Get the correction for Celestial Intermediate Pole (CIP) coordinates.
double	getDy()	Get the correction for Celestial Intermediate Pole (CIP) coordinates.
EopDataType	getEopDataType()	Get the EOP data type.
ITRFVersion	getITRFType()	Get the ITRF version this entry defines.
double	getLOD()	Get the LoD (Length of Day) value.
int	getMjd()	Get the entry date (modified julian day, 00h00 UTC scale).
int	getNutPub()	Get the publication date for nutation (modified Julian day).
double	getUT1MinusUTC()	Get the UT1-UTC value.
double	getX()	Get the X component of the pole motion.
double	getXRate()	Get the X component of the pole motion rate.
double	getY()	Get the Y component of the pole motion.
double	getYRate()	Get the Y component of the pole motion rate.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.orekit.time.TimeStamped

durationFrom

Constructor Details

EOPEntry

public EOPEntry(int mjd,
 double dt,
 double lod,
 double x,
 double y,
 double xRate,
 double yRate,
 double ddPsi,
 double ddEps,
 double dx,
 double dy,
 ITRFVersion itrfType,
 AbsoluteDate date,
 EopDataType eopDataType)

Constructor from raw elements.

This constructor assumes publication date is the same as entry date

Parameters:

mjd - entry date (modified Julian day, 00h00 UTC scale)

dt - UT1-UTC in seconds

lod - length of day

x - X component of pole motion

y - Y component of pole motion

xRate - X component of pole motion rate (NaN if absent)

yRate - Y component of pole motion rate (NaN if absent)

ddPsi - correction for nutation in longitude δΔΨ

ddEps - correction for nutation in obliquity δΔε

dx - correction for Celestial Intermediate Pole (CIP) coordinates

dy - correction for Celestial Intermediate Pole (CIP) coordinates

itrfType - ITRF version this entry defines

date - corresponding to mjd

eopDataType - EOP data type

Since:

13.1.1

EOPEntry

public EOPEntry(int mjd,
 double dt,
 double lod,
 double x,
 double y,
 double xRate,
 double yRate,
 double ddPsi,
 double ddEps,
 double dx,
 double dy,
 ITRFVersion itrfType,
 AbsoluteDate date,
 EopDataType eopDataType,
 int dtPub,
 int nutPub,
 int cipPub)

Constructor from raw elements.

Parameters:

mjd - entry date (modified Julian day, 00h00 UTC scale)

dt - UT1-UTC in seconds

lod - length of day

x - X component of pole motion

y - Y component of pole motion

xRate - X component of pole motion rate (NaN if absent)

yRate - Y component of pole motion rate (NaN if absent)

ddPsi - correction for nutation in longitude δΔΨ

ddEps - correction for nutation in obliquity δΔε

dx - correction for Celestial Intermediate Pole (CIP) coordinates

dy - correction for Celestial Intermediate Pole (CIP) coordinates

itrfType - ITRF version this entry defines

date - corresponding to mjd

eopDataType - EOP data type

dtPub - publication date for X, Y, UT1-UTC and LOD

nutPub - publication date for nutation

cipPub - publication date for Celestial Intermediate Pole

Since:

14.0

EOPEntry

public EOPEntry(EOPEntry entry1,
 EOPEntry entry2)

Combination constructor.

This constructor allows to merge data from two potentially incomplete entries corresponding to the same date.

Incomplete entries occur in particular when parsing Bulletin A data, as xp, yp and UT1-UTC data are published on a weekly basis for rapid data and monthly for final data with a one-month delay. The pole offsets Δδψ/Δδε and x/y are published monthly with a two months delay.

If some fields are initialized in one entry and non-initialized (i.e. NaN) in the other argument, then the initialized fields will be used for construction. If some fields are initialized in both entries, then the one published later will be used in construction. The publication date will be set to the latest of both publication dates. This implies that entries are combined.

Parameters:

entry1 - first entry

entry2 - second entry

Since:

14.0

Method Details

getMjd

public int getMjd()

Get the entry date (modified julian day, 00h00 UTC scale).

Returns:

entry date

See Also:

• getDate()

getDate

public AbsoluteDate getDate()

Get the date.

Specified by:

getDate in interface TimeStamped

Returns:

date attached to the object

getUT1MinusUTC

public double getUT1MinusUTC()

Get the UT1-UTC value.

Returns:

UT1-UTC in seconds

getLOD

public double getLOD()

Get the LoD (Length of Day) value.

Returns:

LoD in seconds

getX

public double getX()

Get the X component of the pole motion.

Returns:

X component of pole motion

getY

public double getY()

Get the Y component of the pole motion.

Returns:

Y component of pole motion

getXRate

public double getXRate()

Get the X component of the pole motion rate.

Returns:

X component of pole motion rate

Since:

12.0

getYRate

public double getYRate()

Get the Y component of the pole motion rate.

Returns:

Y component of pole motion rate

Since:

12.0

getDdPsi

public double getDdPsi()

Get the correction for nutation in longitude δΔΨ.

Returns:

correction for nutation in longitude δΔΨ

getDdEps

public double getDdEps()

Get the correction for nutation in obliquity δΔε.

Returns:

correction for nutation in obliquity δΔε

getDx

public double getDx()

Get the correction for Celestial Intermediate Pole (CIP) coordinates.

Returns:

correction for Celestial Intermediate Pole (CIP) coordinates

getDy

public double getDy()

Get the correction for Celestial Intermediate Pole (CIP) coordinates.

Returns:

correction for Celestial Intermediate Pole (CIP) coordinates

getITRFType

public ITRFVersion getITRFType()

Get the ITRF version this entry defines.

Returns:

ITRF version this entry defines

Since:

9.2

getEopDataType

public EopDataType getEopDataType()

Get the EOP data type.

Returns:

EOP data type

Since:

13.1.1

getDtPub

public int getDtPub()

Get the publication date for X, Y, UT1-UTC and LOD (modified Julian day).

Returns:

publication date for X, Y, UT1-UTC and LOD

Since:

14.0

getNutPub

public int getNutPub()

Get the publication date for nutation (modified Julian day).

Returns:

publication date for nutation

Since:

14.0

getCipPub

public int getCipPub()

Get the publication date for Celestial Intermediate Pole (modified Julian day).

Returns:

publication date for Celestial Intermediate Pole

Since:

14.0