code: def bear(self, p):
          
          return bear(self.alpha.r, self.delta.r, p.alpha.r, p.delta.r)
docs: Find position angle between objects, in radians.
  
          Parameters
          ----------
          p : AngularPosition
              The object to which bearing must be determined.
  
          Notes
          -----
          This method calls the function bear(). See its docstring for
          details.
  
          See also
          --------
          bear