2015 BZ509 (IMAGE) CNRS Caption These two images of 2015 BZ509 taken with the Large Binocular Telescope Observatory confirm its retrograde orbit. Credit Christian Veillet, Large Binocular Telescope Observatory Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.