The co-carrier — the perpendicular bisector of the endpoints.
ccr(d) = e4 ∧ d^☆: the Line (−gy, gx, −pz), whose normal runs opposite attitude. Meets carrier at the dipole's center, and is orientation-sensitive like it.
ccr(d) = e4 ∧ d^☆
(−gy, gx, −pz)