sun, code

The Federation has a code for every sun in the area.  This code has four numbers.  Sol, our Sun, for instance, has the code 17-48-87-90.  The first number, the 17, is the number of the sector the Sun is in.  The next two numbers give the direction of the sun from the headquarters of the sector, and the fourth number gives its distance from the headquarters.

Sector 17 headquarters is on Yband 4, so its sun, Yband, has the code 17-00-00-00.