Yes and this is where my own rules come into play. Example of map as follows:
The rules for interpreting the map are found here:
Wow... This is pretty solid. Takes me way back to Traveller (Or Space Master maybe...). Nicely done! I hope your players appreciate the work here.
You made that sector map using Google?
That's a Traveller subsector map. It appears to have been made with Campaign Cartographer? But, there are many utilities out there for making such maps.