TDBScale (OREKIT 12.1.1 API)

java.lang.Object
- org.orekit.time.TDBScale

All Implemented Interfaces:

Serializable, TimeScale
```
public class TDBScale
extends Object
implements TimeScale
```
Barycentric Dynamic Time.
Time used to take account of time dilation when calculating orbits of planets, asteroids, comets and interplanetary spacecraft in the Solar system. It was based on a Dynamical time scale but was not well defined and not rigorously correct as a relativistic time scale. It was subsequently deprecated in favour of Barycentric Coordinate Time (TCB), but at the 2006 General Assembly of the International Astronomical Union TDB was rehabilitated by making it a specific fixed linear transformation of TCB.

By convention, TDB = TT + 0.001658 sin(g) + 0.000014 sin(2g)seconds where g = 357.53 + 0.9856003 (JD - 2451545) degrees.

Author:

Aude Privat

See Also:

Serialized Form

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getName()`	Get the name time scale.
`double`	`offsetFromTAI(AbsoluteDate date)`	Get the offset to convert locations from `TAIScale` to instance.
`<T extends CalculusFieldElement<T>> T`	`offsetFromTAI(FieldAbsoluteDate<T> date)`	Get the offset to convert locations from `TAIScale` to instance.
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.orekit.time.TimeScale
getLeap, getLeap, insideLeap, insideLeap, minuteDuration, minuteDuration, offsetToTAI

- 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)
  - offsetFromTAI
```
public <T extends CalculusFieldElement<T>> T offsetFromTAI(FieldAbsoluteDate<T> date)
```
    Get the offset to convert locations from TAIScale to instance.
    
    Specified by:
    
    offsetFromTAI in interface TimeScale
    
    Type Parameters:
    
    T - type of the filed elements
    
    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)
  - 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