value quality siderealorsynodic author ref method 17.5440 2 Synodic Behrend LCDB Lightcurve 17.5464 2 Synodic Pal 2020ApJS..247...26P Lightcurve 17.5600 2 Synodic Lagerkvist 1998A&AS..131...55L Lightcurve 17.5726 2 Sidereal Durech 2020A&A...643A..59D Model 17.5800 1 Synodic Behrend LCDB Lightcurve 17.5845 3 Synodic Sheridan 2003MPBu...30...28S Lightcurve