The D  Dc regime is relevant to SO  photodetachment, because the SO(X 3   ) dipole moment is 0.610(8) a.u., while that for the a 1  state is 0.52(2) a.u. Both of these published dipoles correspond to the respective neutral equilibrium geometries. Since photodetachment is a vertical process, dipole moment values corresponding to neutral states at the geometry of the anion are more appropriate. Our CCSD/aug-cc-pVTZ calculations indicate significant increases (by 0.16 and 0.22 a.u., respectively) in the dipole moment for the triplet and singlet channels. This is due to the larger charge separation as the bond length is extended from the neutral to the anion equilibrium value.