An in Sumerian mythology was the personification of heaven. He remained a shadowy figure, the survivor of a creation myth. He was the father of Enlil. In the Assyrio-Babylonian pantheon he was god of kingship as well as heaven but faded into the background before more active gods such as Marduk and Ashur. The star was his symbol. A.G.H.
Cotterell, Arthur, A Dictionary of World Mythology, New York, G. P. Putman’s Sons, 1980, p. 25