http://i2.photobucket.com/albums/y25/RKade8583/Untitled_zpsywst83b7.jpg~original
If u look in the FOW im pretty sure u will probably find an AI starbase. they count for the limit to 
EDIT - Actually if u have a closer look you can see a dotted line going into the fow from the relic. that indicates its taken by a nearby starbase. if you hover over the relic it should say something liked "Owned. Thalan - Spacebase 1"