Personally, if it were a boy's name, I would use it as a pet NN. Either that or a middle name. I don't think it looks good as a first name. For example, instead of
Nova Sebastian, or
Nova Caspian (both of which I DO like), I would go with
Sebastian Nova and
Caspian Nova. It just "flows" better for me.
P.S. I'm a "teen" and I think "
Nova Star" is one of the stupidest names ever. Especially spelled that way. If I had named her that (and there is NO WAY I would ever name a child that), it would've been more along the lines of "Noevah
Starr".. That poor kid... Lol.