galpy.orbit.Orbit.vx

Orbit.vx(*args, **kwargs)

NAME:

vx

PURPOSE:

return x velocity at time t

INPUT:

t - (optional) time at which to get the velocity (can be Quantity)

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:

vx(t)

HISTORY:

2010-11-30 - Written - Bovy (NYU)