Unfortunately, it appears that MM repeated the mistake of having a systemnames.txt file with less than 255 names in it again (only 104, in fact). To this end, I've been looking for some sort of official listing of star names as a replacement. I found this site linked off of Nasa.gov:
http://www.astro.wisc.edu/~dolan/con...name_list.html
I compiled them into a SystemNames.txt and attached to this post for convenience. There are 292 names in the file, so more than enough to cover any sized map the game can support.