[填空题]
The Moon orbits the Earth such that the same sid lm 1nktash5t/j g-2k.e alwaye2pbod( jn e;g1cmg2 5s faces the Earth. Determine the ratio of the Moon’s spin angubn;c od(gm15p g2e 2ejlar momentum (about its own axis) to its orbital angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$