The instable asteroid field was formed out of the remnants of the planets Kira I, II and III. While the gravity well of Kira kept most of the asteroids contained, a few of them escaped and posed an occasional hyperspace hazard.
This was discovered by a second system survey conducted several years after the first one. Further research into the cause of this event was deemed unnecessary and it remained unknown.
- Twin Stars of Kira (First appearance)