There is something here that I do not understand. The article claims that

“[The tablet] is a copy of the night notebook of a Sumerian astronomer as he records the events in the sky before dawn on the 29 June 3123 BC”

But radiocarbon dating of trees buried in the landslide seems to have reliably dated the landslide to 7500 BC.

For example https://www.sciencedirect.com/science/article/abs/pii/S01695...

Update:

The Wikipedia article about the coauthor Mark Hempsell says:

“Hempsell got public audience as author of the book "A Sumerian Observation of the Köfels' Impact Event", with Alan Bond proposes a theory not accepted by the scientific community…”

The link posted in this thread by user arto calls the theory “pseudoscience”:

“Despite this new evidence, curiously in 2008 the impact hypothesis was revived by some pseudoscientists in connection to supposed observations of a meteorite by the Sumerians…”

Now it seems very suspicious that the article claims that the tablet is from 3123 BC, when it was excavated from the palace of Ashurbanipal (650 BC).

Ah, oh well. Was an interesting story. But I mainly shared this to remind myself of this incredible star map, or whatever it really is... Seems not easy to find bona fide information on it, maybe because it's untranslated/decoded except for this Kofels' story, which indeed appears to be out of the bounds of likelihood by 4000 years.