Nathan Myhrvold has raised questions about the accuracy of data NASA uses to track asteroids that may impact the earth. Myhrvold is a former Microsoft chief technologist and a guy with many diverse interests. Specifically he has questioned the size information and how it was derived. This concerns the Neowise project which was derived from the Wide-field Infrared Survey Explorer (WISE) project. It also has implications for the proposed Neocam (short for Near-Earth Object Camera) satellite. This has apparently been an argument for about 2 years. He has now published a peer reviewed paper on it (in Icarus) and might soon publish another. NY Times story here.