So according to Vader the star wars galaxy is of a modest size."Vader stared at the motley array of stars displayed on the conference-room map while Tarkin and Admiral Motti conferred nearby. Interestingly, the first use of the most powerful destructive machine ever constructed had seemingly had no influence at all on that map, which in itself represented only a tiny fraction of this section of one modest-sized galaxy.
Modest: (of an amount, rate, or level of something) relatively moderate, limited, or small.
So the star wars galaxy is a small galaxy.
According to NASA most of the Galaxies in our local group are at least 10 times smaller than the milky way so that gives an average of about 10,000 light years.
The star wars galaxy is stated to be small so it is probably around 8,000 light years.
What your opinion about this calculation?