According to some of the Books that I have read like, "Flyiing Serpents and Dragons, The Stairway to Heaven, Devine Encounters, and the Lost Book of Enki, The Wars of Gods and Men, The 12th Planet, The Lost Relms, When Time Began, and The Cosmic Code, written by Zacharia Sitchin, yes they say that the planet Nibiru rotates around the sun every 3,600 years. What we do in 365 days. In Genesis they speak about the Anak, which is short for Anunnki. They are on the planet Nibiru supposedly. They are considered the Nefilim, which came from the fallen angels. They are very large, 18-23 ft tall. Zacharia Sitchin wrote many books about them. He took the information off of over 500,000 clay tablets that were dug up in the 1800's. .