The Battlestar Artemis is a holdover from the First Cylon War. One of the first Valkyrie-types put afield, she has spent most of the last 20 years in a storage facility, not quite scrap but not quite fit for service.
That all changed with the Fall of the 12 Colonies. Pressed into service by a rag-tag group of Colonials, the Artemis has been forced to eke her way through space, avoiding Cylons at every turn.
Now, three months in, a small planetary camp has been set up to strip mine the small planetoid of its precious Tylium, the rare mineral all ships need for FTL travel and fuel in general.