fr.cnes.sirius.patrius.time

Interface TDBModel

All Known Implementing Classes:

TDBDefaultModel

public interface TDBModel

Barycentric Dynamic Time model.

TDB is 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.

Since:

4.7

Author:

Emmanuel Bignon

Method Summary

Modifier and Type	Method and Description
double	offsetFromTAI(AbsoluteDate date) Get the offset to convert locations from TAIScale to TDBScale.

Method Detail

offsetFromTAI

double offsetFromTAI(AbsoluteDate date)

Get the offset to convert locations from TAIScale to TDBScale.

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