Marduk / Maldek and the Anunaki as described by the Sumerians

[Dtris]

The planet Nibiru has been named by the Babyionians as Marduk.

There is the story in the above book, told by the Sumerians, describing the people of Marduk as the alien Anunaki, living on the planet Nibiru, that comes to earth to extract gold for the preservation of their atmosphere of the planet Nibiru, that still exists in an orbit, that takes 3600 years to orbit the sun and regularly crosses our orbit.

Is this a typo? 3600 days would fit the location in the solar system for orbit. 3600 years is over 20 times longer than neptunes orbit.