galpy.orbit.Orbit.vR

Orbit.vR(*args, **kwargs)

NAME:

vR

PURPOSE:

return radial velocity at time t

INPUT:

t - (optional) time at which to get the radial velocity

vo= (Object-wide default) physical scale for velocities to use to convert (can be Quantity)

use_physical= use to override Object-wide default for using a physical scale for output

OUTPUT:

vR(t)

HISTORY:

2010-09-21 - Written - Bovy (NYU)