Vega 3

 was a planet some 27 light years from Earth. It orbited a single star. It was the base for humanoid — possibly fully human — colonists who were attempting to build an artificial planet out of rocks in the nearby asteroid belt. (AK9: K9 and the Beasts of Vega)
 * ''It's unclear whether this planet is in the same system as Vega or Vega VI.