Auros
From Tardis Wiki, the free Doctor Who reference
Auros was a human colony world in the Kappa Galanga sector. After it was attacked by the Daleks, the human colonists were forced to surrender. Rather than have their world fall to the Daleks, the survivors destroyed their own planet using Osterhagen technology. However it was a trick by the Daleks, who destroyed the flagship on the orders of Dalek X and enslaved the colonists, who were taken to help gain access to the Arkheon Threshold. After the Daleks were defeated on Hurala throwing the fleet into disarray, a fleet was apparently dispatched to free the prisoners. (NSA: Prisoner of the Daleks)
