[mnehring]

I would rather save Vulcan for something a little more interesting than a tiny, rocky moon.

[EveningStar]

Good point.

[Verginius Rufus]

At one point the name Vulcan was used for a hypothetical planet which some people believed was orbiting the sun closer in than Mercury. Even though now no one believes that that planet exists, it might be a good idea to save the name and not use it for a different category of object.