The Atlas of the Imperium: Second Survey is a compilation of starmaps showing the broad expanse of the Imperium and nearby sectors in Charted Space. More than 50 sectors (of 16 subsectors each) show the star systems of the empire and many star systems which border it as well. The maps of the Atlas are intended as a navigational guide. Data on star systems shows the information necessary to allow interstellar navigation: fuel sources, starport types, bases, and allegiance. Following each sector map are the full details of each system, presented according to the Traveller 5 Core Rules but applicable to any edition. - from the publisher's blurb