Newfound asteroid's speedy orbit (IMAGE) Carnegie Institution for Science Caption An illustration of 2021 PH27’s orbit, by Katherine Cain and Scott Sheppard, courtesy of the Carnegie Institution for Science. It is the fastest orbiting known asteroid. Credit Katherine Cain and Scott Sheppard, courtesy of the Carnegie Institution for Science. Usage Restrictions WIth credit License Original 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.