'The angle\'s value in degrees, as a named tuple with ``(sign, d, m, s)``
members.  The ``d``, ``m``, ``s`` are thus always positive, and the sign of
the angle is given by ``sign``. (This is a read-only property.)
This is primarily intended for use with `dms` to generate string
representations of coordinates that are correct for negative angles.'

@property
def signed_dms(self):

    return signed_dms_tuple(np.sign(self.degree), *util.degrees_to_dms(np.abs(self.degree)))
