Gaston System was a star system in the Republic of Haven.

The system and its sole habitable planet, Toulon, were conquered sometime prior to 1856 PD.

In 1920 PD, the system's picket force and orbital infrastructure were hit by the Royal Manticoran Navy's Eighth Fleet as part of Operation Cutworm I. As good as every bit of orbital industry in it was destroyed. (HH11)