Input (grade 8): Sylvia is also a fairly fast rotator, turning about its axis every 5.18 hours (giving an equatorial rotation velocity of about 230 km\/h or 145 mph).
Output (grade 7): Sylvia is also a fairly fast rotator, turning about its axis every 5.18 hours (giving an equatorial rotation speed of about 230 km\/h or 145 mph).