# galpy.orbit.Orbit.rE¶

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

NAME:

rE

PURPOSE:

calculate the radius of a circular orbit with the same energy

INPUT:

pot= potential instance or list of such instances

ro= (Object-wide default) physical scale for distances to use to convert (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:

r_E [*input_shape,nt]

HISTORY:

2022-04-07 - Written as thin wrapper around Potential.rE - Bovy (UofT)