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The motion of a massive test particle around a Kehagias-Sfetsos black hole indeformed Ho\u{r}ava-Lifshitz gravity is studied. Employing the effectivepotential, the marginally bound orbits and the innermost stable circular orbitsare analyzed. For the marginally bound orbits, their radius and angularmomentum decrease with the parameter $\omega$ of the gravity. For the innermoststable circular orbits, the energy and angular momentum also decrease with$\omega$. Based on these results, we investigate the periodic orbits in theKehagias-Sfetsos black holes. It is found that the apsidal angle parameterincreases with the particle energy, while decreases with the angular momentum.Moreover, compared to the Schwarzschild black hole, the periodic orbits inKehagias-Sfetsos black holes always have lower energy. These results provide usa possible way to distinguish the Kehagias-Sfetsos black hole in deformedHo\u{r}ava-Lifshitz gravity from the Schwarzschild black hole.

Geodesics and periodic orbits in Kehagias-Sfetsos black holes in deformed Ho\u{r}ava-Lifshitz gravity