Well, Anunnaki and celestials are different, Anunnaki are fallen angels or gods; celestials are very large anomalies (orbs, lights, stars, messiers, pure energy, animals are taken away, humans and plants bow down, sounds like "a thousand rivers"), it alters physical and quantum reality as well as the human condition and perception. Elijah describes this entity as the Creator, in other words, the God of Adam and Eve. Throughout ALL cultures and traditions it is identified as a sun god or sun disk; this is a spiritual God, a God of creation and enlightment of the soul.
Discussion
Some would argue Annunaki are merely a more advanced versions of us and they predate the story of Elijah.
Speaking as someone that's got about 5 seconds worth of study on the subject. So by no means informed.