Lunar flyby can also be used to capture an asteroid.[8] The orbits of the asteroid have different Jacobi constants before and after lunar flybys. When the Jacobi constant of the asteroid orbits after the lunar flyby reaches a certain value, the asteroid will be captured. The capture regions of different pre-flyby initial Jacobi constants can be represented numerically, and these capture regions can be used to determine whether the asteroid can be captured or not through lunar flybys, which will finally be validated through the ephemerides model.[8]