galpy.util.coords.cov_vxyz_to_galcencyl

galpy.util.coords.cov_vxyz_to_galcencyl(cov_vxyz, phi, Xsun=1.0, Zsun=0.0)[source]

NAME:

cov_vxyz_to_galcencyl

PURPOSE:

propagate uncertainties in vxyz to galactocentric cylindrical coordinates

INPUT:

cov_vxyz - uncertainty covariance in U,V,W

phi - angular position of star in galactocentric cylindrical coords

OUTPUT:

cov(vR,vT,vz) [3,3]

HISTORY:

2018-03-22 - Written - Mackereth (LJMU)

2020-09-21- Moved to coords.py - Mackereth (UofT)