A lot of very good info on this thread so far. Perhaps i can add another angle? Has anyone heard of Jeleila Starr who says she is an Earth based rep for Nibiru, specifically the Nibiruan Council. She has her own long established website and her first book has a heck of a lot of info about Nibiru contained in it. Her website for your own further research is
www.nibiruancouncil.com and the book is: We are The Nibiruans, Return of the 12th Planet.
and this book is worth checking out too: Catastraphobia by Barbara Handclow
info on Nibiru’s cyclic returns.
I have met Jeleila a couple of times and do not doubt her authenticity for a moment.
Cheers