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Near-Earth asteroid, Kamo'oalewa (469219), is one of a small number of knownquasi-satellites of Earth; it transitions between quasi-satellite and horseshoeorbital states on centennial timescales, maintaining this dynamics overmegayears. The similarity of its reflectance spectrum to lunar silicates andits Earth-like orbit both suggest that it originated from the lunar surface.Here we carry out numerical simulations of the dynamical evolution of particleslaunched from different locations on the lunar surface with a range of ejectionvelocities in order to assess the hypothesis that Kamo`oalewa originated as adebris-fragment from a meteoroidal impact with the lunar surface. As theseejecta escape the Earth-Moon environment, they face a dynamical barrier forentry into Earth's co-orbital space. However, a small fraction of launchconditions yields outcomes that are compatible with Kamo`oalewa's orbit. Themost favored conditions are launch velocities slightly above the escapevelocity from the trailing lunar hemisphere.

Lunar ejecta origin of near-Earth asteroid Kamo`oalewa is compatible with rare orbital pathways