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

Return angular velocity.

  • t (numeric, numpy.ndarray or Quantity, optional) – Time at which to get the angular velocity. Default is the initial time.

  • vo (float or Quantity, optional) – Physical scale for velocities in km/s to use to convert. Default is object-wide default.

  • use_physical (bool, optional) – Use to override object-wide default for using a physical scale for output.

  • quantity (bool, optional) – If True, return an Astropy Quantity object. Default from configuration file.


Angular velocity.

Return type:

float, numpy.ndarray or Quantity [*input_shape,nt]


  • 2019-02-20 - Written - Bovy (UofT)