UCelestialMaths::GetPrecessionMatrix

Return the Precession Matrix The Precession matrix transforms coordinates from one equatorial reference epoch to another by accounting for Earth’s long-term, secular drift of its rotation axis (precession of the equinox).

API > API/Plugins > API/Plugins/CelestialVault > API/Plugins/CelestialVault/UCelestialMaths

Description

Return the Precession Matrix The Precession matrix transforms coordinates from one equatorial reference epoch to another by accounting for Earth’s long-term, secular drift of its rotation axis (precession of the equinox). It's used to compute RA, DEC between the J2000 Epoch and a specific date. (Earth’s rotation axis slowly traces a ~26,000-year cone because of gravitational torques from the Moon and Sun.)

   
Name GetPrecessionMatrix
Type function
Header File /Engine/Plugins/Runtime/CelestialVault/Source/CelestialVault/Public/CelestialMaths.h
Include Path #include "CelestialMaths.h"
Source /Engine/Plugins/Runtime/CelestialVault/Source/CelestialVault/Private/CelestialMaths.cpp 
UFUNCTION (BlueprintCallable, Category="Celestial Vault|Earth")  
static FMatrix GetPrecessionMatrix  
(  
    double JulianDate  
)

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