The Venus tablet of Ammisaduqa (Enuma Anu Enlil Tablet 63) refers to the record of astronomical observations of Venus, as preserved in numerous cuneiform tablets dating from the first millennium BC. It is believed that this astronomical record was first compiled during the reign of King Ammisaduqa (or Ammizaduga), the fourth ruler after Hammurabi. Thus, the origins of this text should probably be dated to around the mid-seventeenth century BC.[1] (according to the Middle Chronology).