galpy.actionAngle.actionAngle.EccZmaxRperiRap¶
- actionAngle.EccZmaxRperiRap(*args, **kwargs)[source]¶
NAME:
EccZmaxRperiRap
PURPOSE:
evaluate the eccentricity, maximum height above the plane, peri- and apocenter
INPUT:
Either:
R,vR,vT,z,vz[,phi]:
floats: phase-space value for single object (phi is optional) (each can be a Quantity)
numpy.ndarray: [N] phase-space values for N objects (each can be a Quantity)
Orbit instance: initial condition used if that’s it, orbit(t) if there is a time given as well as the second argument
OUTPUT:
(e,zmax,rperi,rap)
HISTORY:
2017-12-12 - Written - Bovy (UofT)