Heres the wiki link for the star, i'm not sure as to call the planet around it Nibiru just yet tho.
http://en.wikipedia.org/wiki/1RXS_J160929.1-210524
This is a handy program I found for exploring stars and planets in 3D. It doesn't come with 1RXS J160929.1-210524 pre-installed but i'm sure someone has made a plugin for it.
http://www.shatters.net/celestia/
This is pretty interesting as well:
http://www.youtube.com/watch?v=gjOPrlV1R9Q