The Galaxy Locator, or Core-Exiles Universal Locator (CEUL), allows you to find any location in the game by name. It is available from the System Options dropdown box.
You can find a location by looking up the name in the list, and pressing "Locate Now". This will show you the Location Info screen, with on the right the galaxy and system the location can be found. You can then use the Return To Locator to either find a new location or to exit the locator.