REMPI-TOF studies of the UV photodissociation of O-3 at 270 nm have allowed the translational anisotropy and angular momentum polarization of the O-2(a(1)Delta(g)) molecular photofragment to be determined. Alignment and orientation moments have been measured for O-2(a(1)Delta(g), v = 0) using a selection of rotational transitions probing values of J = 15-27 in the (1,0) and (2,0) bands of the highly perturbed (2 + 1) d(1)Pi(9) <--<-- a(1)Delta(g) REMPI spectrum. The fragments exhibit the anisotropic vector correlations expected from a prompt dissociation via the B-1(2) <-- A(1) transition. However, we observe that the moments describing angular momentum polarization of odd J states are consistently lower in magnitude than those of even J states, resulting in a clear alternation in the moments observed across a rotational branch. (C) 2004 Elsevier B.V. All rights reserved.