Function rvKmsToMasyr( rvKms, plxMas )

Description:
Converts from unnormalised radial velocity in km/s to normalised radial velocity in mas/year.

The output is calculated as rvKms * plxMas / AU_YRKMS, where AU_YRKMS=4.740470446 is one Astronomical Unit in km.yr/sec.

Parameters:
rvKms (floating point)
unnormalised radial velocity, in mas/year
plxMas (floating point)
parallax in mas
Return Value (floating point):
radial velocity in mas/year
Signature:
double rvKmsToMasyr(double, double)