It has a rather eccentric orbit that sometimes brings it closer to the Sun than the planet Mars .
As a Mars - crosser asteroid , Aethra is the lowest numbered asteroid to not have proper orbital elements due to recurring perturbations by Mars .
Aethra has a rather eccentric orbit that sometimes brings it closer to the Sun than the Mars Mars .
As a Mars - crosser asteroid , Aethra is the lowest numbered asteroid to not have proper orbital elements due to recurring perturbations by Mars .