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)