Is there a source for distances or does one have to fudge the numbers a bit? I can see some systems in or near stellar landmarks like known real world clusters and nebula so guess those might be a bit easier but I am not sure about the rest.
Intel Core i7-5820K 4.2GHz 6-Core Processor G.Skill Ripjaws V Series 32GB (4 x 8GB) DDR4-2400 Memory EVGA GTX 980 Ti SC 6GB
I just watched the link that has DoctorOfSpace and I see that the number of star is asser impressive in addition there asteroid belts but there is a tool in this thread Tools and Utilities ... . I wish you good luck on your mod. I think it will be the second largest mod on catalogs after Star Wars is not finished yet.