I agree, it sounds mysterious and alluring, and beautiful. I also like constellation names in general, so... :) It is mature for a child, but I think Allie would work. Allie sounds so preppy though... Ala? Audra? Lulu?
Lulu would work really well as a nickname for Aludra, but I don't really care for it for a person unfortunately. I love Audra. I think I'd probably just go with Audra as a full name, though.Ala is an interesting idea. It would be less popular than Allie and less expected.Thanks!