Package org.orekit.time

Class OffsetModel

java.lang.Object

org.orekit.time.OffsetModel

All Implemented Interfaces:

Serializable

public class OffsetModel
extends Object
implements Serializable

TAI UTC offset model.

Since:

7.1

Author:

Luc Maisonobe

See Also:

• UTCTAIOffsetsLoader
• Serialized Form

Constructor Summary

Constructors

Constructor	Description
OffsetModel(DateComponents start, int offset)	Constructor for a constant offset model.
OffsetModel(DateComponents start, int mjdRef, TimeOffset offset, int slope)	Constructor for a linear offset model.

Method Summary

Modifier and Type	Method	Description
int	getMJDRef()	Get the reference date of the linear model as a modified julian day.
TimeOffset	getOffset()	Offset at reference date in seconds (TAI minus UTC).
int	getSlope()	Offset slope in nanoseconds per UTC second (TAI minus UTC / dUTC).
DateComponents	getStart()	Get the date of the offset start.

Methods inherited from class java.lang.Object

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

Constructor Details

OffsetModel

public OffsetModel(DateComponents start,
 int mjdRef,
 TimeOffset offset,
 int slope)

Constructor for a linear offset model.

These models were used prior to 1972.

Parameters:

start - date of the offset start

mjdRef - reference date of the linear model as a modified julian day

offset - offset at reference date in seconds (TAI minus UTC)

slope - offset slope in nanoseconds per UTC second (TAI minus UTC / dUTC)

OffsetModel

public OffsetModel(DateComponents start,
 int offset)

Constructor for a constant offset model.

These models are used since 1972.

Parameters:

start - date of the offset start

offset - offset at reference date in seconds (TAI minus UTC)

Method Details

getStart

public DateComponents getStart()

Get the date of the offset start.

Returns:

date of the offset start

getMJDRef

public int getMJDRef()

Get the reference date of the linear model as a modified julian day.

Returns:

reference date of the linear model as a modified julian day

getOffset

public TimeOffset getOffset()

Offset at reference date in seconds (TAI minus UTC).

Returns:

offset at reference date in seconds (TAI minus UTC)

getSlope

public int getSlope()

Offset slope in nanoseconds per UTC second (TAI minus UTC / dUTC).

Returns:

offset slope in nanoseconds per UTC second (TAI minus UTC / dUTC)