Masek took the picture of it with the aid of the FRAM robotic telescope, which is a part of the Pierre Auger Observatory in Argentina. The observatory is designed to detect ultra-high-energy cosmic rays.
This image was first of the asteroid photographs made within the European project GLORIA, the global network of robotic telescopes. The image has thus achieved wide publicity, it was shown e.g. at the web pages of NASA or published in the newspaper Guardian.