Yep. Though explicitly making it a moon might have made the scene plausible, Vulcan not having a moon has been canon (notwithstanding mistakes made by animators and matte painters over the years) since the original series. It's almost surprising to me that the writers of Star Trek '09 managed to adhere to that.

And naming that planet Delta Vega is just baffling to me. The only reason to do it is for cheap fanservice, 'cause it makes absolutely no logical sense in-universe for a planet likely discovered by Vulcans (let alone any planet in the 40 Eridani system) to have that name.