).

                When 'ref' designates a non-inertial frame, the
                orientation of the frame is evaluated at an epoch
                dependent on the selected aberration correction.

                [1,c2] = size(ref); char = class(ref)

                   or

                [1,1] = size(ref); cell = class(ref)

      abcorr    the aberration corrections to apply to the position of the
                target body to account for one-way light time and stellar
                aberration.

  