# galpy.potential.rl¶

galpy.potential.rl(Pot, lz, t=0.0)[source]

NAME:

rl

PURPOSE:

calculate the radius of a circular orbit of Lz

INPUT:

Pot - Potential instance or list thereof

lz - Angular momentum (can be Quantity)

t - time (optional; can be Quantity)

OUTPUT:

radius

HISTORY:

2012-07-30 - Written - Bovy (IAS@MPIA)

NOTE:

An efficient way to call this function on many objects is provided as the Orbit method rguiding