The Marstill system was a binary star system, a red giant and a yellow main-sequence star. There were no planets in the Marstill system. It was located approximately halfway between Yavin and Dantooine, just beyond the junction of the Syrdia Route and Hydian Way. Nearby star systems included Kalla Tora and G0-CV. Marstill itself had little value, lacking planets or asteroids for civilization. However, its location made it a good place to intercept ships en route from Yavin to Dantooine, as it lay near only safe path that involved less than five hyperspace jumps.