The term "Nibiru" comes from the Sumerian cuneiform tablets and writings dating around 5,000 years old. The term Nibiru means "Planet of the crossing", and it's cuneiform sign was often a cross, or various winged disc. The Sumerian culture was located in the fertile lands between the Euphrates and Tigris rivers, at the southern part of today's Iraq.
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Nibiru, to the Babylonians, was the celestial body associated with the god Marduk. The name is Akkadian and means 'crossing place' or 'place of transition'. In most Babylonian texts it is identified with the planet Jupiter. In Tablet 5 of the Enuma Elish it may be the pole star, which at the time was Thuban or possibly Kochab (Ursa Minor).

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