I didn't find a thread in GTD, so here is the link to the article and where to vote. Voting ends February 25, 2013. According to the article Shatner himself is pushing for the name Vulcan. The article says thanks to Trekkies, Vulcan is winning. If you haven't voted, do so now.
When I posted this in the sci&tech forum, it seemed to be unanimous -- anything but "Vulcan." I suggested naming at least one of them Vulcan, then NASA could blow it up JJ style...but nobody agreed. In fact, nobody commented at all after that. Perhaps they didn't think the NASA cameras would provide enough lens flares?
There's also non-Star Trek precedents for Vulcan being the name of a planet. Vulcan is a character in Greek mythology after all. But I suppose a hot planet's moon would be more appropriate.
Vulcan existed, sort of... But I played ball and voted for Vulcan despite all the nice options (Persephone, Tantalus, Styx.) When a good options presents itself - volcanically active, orbiting 40 Eridani A - then we can slap the appropriate label on the new candidate.
Name little Pluto's little moon Vulcan? A fictional planet which itself has no moons? I think we can do better than a moon.
No. Even in the distant future when we have colonized the solar system, nobody will give a shit about that dinky ice moon. Save Vulcan for a more impressive planetary body.
That's why the public shouldn't be allowed to vote on things like this. What does Vulcan have to do with Pluto in mythology? Vulcan wins because of Trek connections, not because the name fits with a theme.