value quality siderealorsynodic author ref method 2.7210 3 Synodic Skiff LCDB Lightcurve 2.7210 3 Synodic Stephens 2020MPBu...47..125S Lightcurve 2.7216 3 Synodic Skiff 2019MPBu...46..238S Lightcurve 2.8800 2 Synodic Kryszczynska 2012A&A...546A..72K Lightcurve 48.0870 2 Synodic Erasmus 2020ApJS..247...13E Lightcurve