[填空题]
The Moon orbits the Earth such tha;q/dxidb ofpda* 3w op 8a *341bhc.eut the same side always wn k ihq.,arb-*i )bo;utu d,(faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbital angular momentum. (In ,hun i-buw ,;)*oiba.q dkrt( the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$