galpy.orbit.Orbit.helioZ

Orbit.helioZ(*args, **kwargs)[source]

NAME:

helioZ

PURPOSE:

return Heliocentric Galactic rectangular z-coordinate (aka “Z”)

INPUT:

t - (optional) time at which to get Z

obs=[X,Y,Z] - (optional) position and velocity of observer
(in kpc and km/s) (default=Object-wide default) OR Orbit object that corresponds to the orbit of the observer Y is ignored and always assumed to be zero

ro= distance in kpc corresponding to R=1. (default=Object-wide default)

OUTPUT:

helioZ(t) in kpc [*input_shape,nt]

HISTORY:

2019-02-21 - Written - Bovy (UofT)