value quality siderealorsynodic author ref method 11.5200 2 Synodic Folberth 2012MPBu...39...51F Lightcurve 15.3320 3 Synodic Dose 2023MPBu...50..151D Lightcurve 6.6170 2 Synodic Aznar 2016MPBu...43..257A Lightcurve