fr.cnes.sirius.patrius.time

Class UT1Scale

java.lang.Object

fr.cnes.sirius.patrius.time.UT1Scale

All Implemented Interfaces:

TimeScale

public class UT1Scale
extends Object
implements TimeScale

Universal Time 1.

UT1 is a time scale directly linked to the actual rotation of the Earth. It is an irregular scale, reflecting Earth irregular rotation rate. The offset between UT1 and UTC is found in the Earth Orientation Parameters published by IERS.

Since:

5.1

Author:

Luc Maisonobe

See Also:

AbsoluteDate

Method Summary

Modifier and Type	Method and Description
EOPHistory	getHistory() Package-private getter for the EOPHistory object.
String	getName() Get the name time scale.
double	offsetFromTAI(AbsoluteDate date) Get the offset to convert locations from TAIScale to instance.
double	offsetToTAI(DateComponents date, TimeComponents time) Get the offset to convert locations from instance to TAIScale.
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

offsetFromTAI

public double offsetFromTAI(AbsoluteDate date)

Get the offset to convert locations from TAIScale to instance.

Specified by:

offsetFromTAI in interface TimeScale

Parameters:

date - conversion date

Returns:

offset in seconds to add to a location in TAIScale time scale to get a location in instance time scale

See Also:

TimeScale.offsetToTAI(DateComponents, TimeComponents)

offsetToTAI

public double offsetToTAI(DateComponents date,
                          TimeComponents time)

Get the offset to convert locations from instance to TAIScale.

Specified by:

offsetToTAI in interface TimeScale

Parameters:

date - date location in the time scale

time - time location in the time scale

Returns:

offset in seconds to add to a location in instance time scale to get a location in TAIScale time scale

See Also:

TimeScale.offsetFromTAI(AbsoluteDate)

getName

public String getName()

Get the name time scale.

Specified by:

getName in interface TimeScale

Returns:

name of the time scale

toString

public String toString()

Overrides:

toString in class Object

getHistory

public EOPHistory getHistory()

Package-private getter for the EOPHistory object.

Returns:

current history object.