astromXYZ( ra, dec, parallax )
polarXYZ(ra, dec, 1000./parallax)
Note that this performs distance scaling using a simple inversion of parallax, which is not in general reliable for parallaxes with non-negligable errors. Use at your own risk.
ra (floating point)dec (floating point)parallax (floating point)astromXYZ(ra, dec, parallax)icrsToGal(astromXYZ(ra, dec, parallax))double[] astromXYZ(double, double, double)