There is some company called the International Star Registry that lets you attach a name to a star in the Smithsonian Astrophysical Observatory catalog of 300,000 stars, but this is not sanctioned by astronomers. I should not be encouraging this kind of stuff, but if you call 1-800-282-3333 they will tell you more about what you get for your $45.00
When I was a student at U.C Berkeley in the 1970's I bought an acre of land on Mercury for $25.00...but that was for some noble, charitable cause!!!
I should remind you all that the International Astronomical Union is the only sanctioned body that has the authority to name celestial bodies. Any names that you or any commercial enterprise should care to attach to a celestial body would not be legally recognized, nor would they be used by the astronomical community in technical journals etc. Astronomers themselves can name such bodies, but the names only become official if and when they are submitted to the IAU for formal review and approval. Naming conventions for both solar system and deep space objects are strictly adhered to.