
This web page is the home of the research by Alan Bond and Mark Hempsell into the asteroid impact at Köfels in Austria
A tablet in the British Museum's cuneiform clay tablet collection has been found to be a Sumerian night log book that records the observation of the asteroid that hit Köfels in Austria. These notes allow the night sky to be identified as in the early morning of 29th June 3123 BC and the trajectory can be determined that of an Aten class asteroid, a little over one kilometre in diameter, that was in a resonant orbit with the earth.