  We study the impurity problem in a Fermi gas of $^{173}$Yb atoms near an
orbital Feshbach resonance, where a single moving particle in the $^3P_0$ state
interacting with two background Fermi seas of particles in different nuclear
states of the ground $^1S_0$ manifold. By employing wave function ansatzs for
molecule and polaron states, we investigate various properties of the molecule,
the attractive polaron, and the repulsive polaron states. We find that in
comparison to the case of only one Fermi sea is populated, the presence of an
additional Fermi sea acts as an energy shift between the two channels of the
orbital Feshbach resonance. Besides, the fluctuation around the Fermi level
would also bring sizable effects to the attractive and repulsive polaron
states.
