[填空题]
The Moon orbits the Ea,my ;7tw,b7 9tnonyrv0 jn-i orth such that the same /djfqha-t90f tmd*yjt2j962l pnr/k side always faces the Earth. Determine the ratio of the Moon’s spin angular momentum (about its own axis) to its orbitatf2q9 /lj/-j* mf2h0n9ttp k6 j dayrdl angular momentum. (In the latter case, treat the Moon as a particle orbiting the Earth.) $\times10^{ -6}$