Aquarius is a constellation, not a single star. The constellation contains a very large number of stars and other cosmic objects which have no astrophysical relationship with one another. It is simply that they are located in such a direction, and are so far away, that they appear to move together. The distances to the cosmic objects that make up Aquarius range from 11.3 light years to 6,792 light years. You can take your pick as to which number in that range represents the distance to Aquarius.