galpy.orbit.Orbit.dist

Orbit.dist(*args, **kwargs)

NAME:

dist

PURPOSE:

return distance from the observer in kpc

INPUT:

t - (optional) time at which to get dist

obs=[X,Y,Z] - (optional) position of observer (in kpc)

(default=Object-wide default) OR Orbit object that corresponds to the orbit of the observer; Note that when Y is non-zero, the coordinate system is rotated around z such that Y’=0

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

OUTPUT:

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

HISTORY:

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