Enûma Eliš
Nibiru was considered the seat of the "summus deus" who shepherds the stars like sheep, in Babylon identified with Marduk. The establishment of the nibiru point is described in tablet 5 of the creation epic "Enûma Eliš": “When Marduk fixed the locations (manzazu) of Nibiru, Enlil and Ea in the sky".