Package org.orekit.frames

Class EclipticProvider

java.lang.Object

org.orekit.frames.EclipticProvider

All Implemented Interfaces:

TransformProvider

public class EclipticProvider
extends Object

An inertial frame aligned with the ecliptic.

The IAU defines the ecliptic as "the plane perpendicular to the mean heliocentric orbital angular momentum vector of the Earth-Moon barycentre in the BCRS (IAU 2006 Resolution B1)." The +z axis is aligned with the angular momentum vector, and the +x axis is aligned with +x axis of MOD.

This implementation agrees with the JPL 406 ephemerides to within 0.5 arc seconds.

Since:

7.0

Constructor Summary

Constructors

Constructor	Description
EclipticProvider(IERSConventions conventions)	Create a transform provider from MOD to an ecliptically aligned frame.
EclipticProvider(IERSConventions conventions, TimeScales timeScales)	Create a transform provider from MOD to an ecliptically aligned frame.

Method Summary

Modifier and Type	Method	Description
default KinematicTransform	getKinematicTransform(AbsoluteDate date)	Get a transform for position and velocity, not acceleration.
default <T extends CalculusFieldElement<T>> FieldKinematicTransform<T>	getKinematicTransform(FieldAbsoluteDate<T> date)	Get a transform for position and velocity, not acceleration.
<T extends CalculusFieldElement<T>> FieldRotation<T>	getRotation(FieldAbsoluteDate<T> date)	Compute the ecliptic rotation.
default StaticTransform	getStaticTransform(AbsoluteDate date)	Get a transform for only rotations and translations on the specified date.
default <T extends CalculusFieldElement<T>> FieldStaticTransform<T>	getStaticTransform(FieldAbsoluteDate<T> date)	Get a transform for only rotations and translations on the specified date.
default Transform	getTransform(AbsoluteDate date)	Get the Transform corresponding to specified date.
default <T extends CalculusFieldElement<T>> FieldTransform<T>	getTransform(FieldAbsoluteDate<T> date)	Get the FieldTransform corresponding to specified date.

Methods inherited from class java.lang.Object

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

Constructor Details

EclipticProvider

@DefaultDataContext
public EclipticProvider(IERSConventions conventions)

Create a transform provider from MOD to an ecliptically aligned frame.

This constructor uses the default data context.

Parameters:

conventions - IERS conventions

See Also:

• EclipticProvider(IERSConventions, TimeScales)

EclipticProvider

public EclipticProvider(IERSConventions conventions,
 TimeScales timeScales)

Create a transform provider from MOD to an ecliptically aligned frame.

Parameters:

conventions - IERS conventions

timeScales - to use in computing the transformation.

Since:

10.1

Method Details

getRotation

public <T extends CalculusFieldElement<T>>
FieldRotation<T> getRotation(FieldAbsoluteDate<T> date)

Compute the ecliptic rotation.

Type Parameters:

T - type of the field elements

Parameters:

date - current date

Returns:

ecliptic rotation

getTransform

default Transform getTransform(AbsoluteDate date)

Get the Transform corresponding to specified date.

Specified by:

getTransform in interface TransformProvider

Parameters:

date - current date

Returns:

transform at specified date

getKinematicTransform

default KinematicTransform getKinematicTransform(AbsoluteDate date)

Get a transform for position and velocity, not acceleration.

The default implementation returns TransformProvider.getTransform(AbsoluteDate) but implementations may override it for better performance.

Specified by:

getKinematicTransform in interface TransformProvider

Parameters:

date - current date.

Returns:

the kinematic transform.

getStaticTransform

default StaticTransform getStaticTransform(AbsoluteDate date)

Get a transform for only rotations and translations on the specified date.

The default implementation calls TransformProvider.getTransform(AbsoluteDate) but implementations may override it for better performance.

Specified by:

getStaticTransform in interface TransformProvider

Parameters:

date - current date.

Returns:

the static transform.

getTransform

default <T extends CalculusFieldElement<T>>
FieldTransform<T> getTransform(FieldAbsoluteDate<T> date)

Get the FieldTransform corresponding to specified date.

Specified by:

getTransform in interface TransformProvider

Type Parameters:

T - type of the field elements

Parameters:

date - current date

Returns:

transform at specified date

getKinematicTransform

default <T extends CalculusFieldElement<T>>
FieldKinematicTransform<T> getKinematicTransform(FieldAbsoluteDate<T> date)

Get a transform for position and velocity, not acceleration.

The default implementation returns TransformProvider.getTransform(AbsoluteDate) but implementations may override it for better performance.

Specified by:

getKinematicTransform in interface TransformProvider

Type Parameters:

T - type of the elements

Parameters:

date - current date.

Returns:

the kinematic transform.

getStaticTransform

default <T extends CalculusFieldElement<T>>
FieldStaticTransform<T> getStaticTransform(FieldAbsoluteDate<T> date)

Get a transform for only rotations and translations on the specified date.

The default implementation returns TransformProvider.getTransform(AbsoluteDate) but implementations may override it for better performance.

Specified by:

getStaticTransform in interface TransformProvider

Type Parameters:

T - type of the elements

Parameters:

date - current date.

Returns:

the static transform.