galpy.util.coords.XYZ_to_galcencyl

galpy.util.coords.XYZ_to_galcencyl(X, Y, Z, Xsun=1.0, Zsun=0.0, _extra_rot=True)[source]

NAME:

XYZ_to_galcencyl

PURPOSE:

transform XYZ coordinates (wrt Sun) to cylindrical Galactocentric coordinates

INPUT:

X - X

Y - Y

Z - Z

Xsun - cylindrical distance to the GC

Zsun - Sun’s height above the midplane

_extra_rot= (True) if True, perform an extra tiny rotation to align the Galactocentric coordinate frame with astropy’s definition

OUTPUT:

R,phi,z

HISTORY:

2010-09-24 - Written - Bovy (NYU)