value quality siderealorsynodic author ref method 5.6400 3 Synodic LeCrone 2005MPBu...32...62L Lightcurve 5.6411 2 Sidereal Durech 2020A&A...643A..59D Model 5.6420 3 Synodic Behrend LCDB Lightcurve 5.6430 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve