value quality siderealorsynodic author ref method 16.7100 3 Synodic Sauppe 2007MPBu...34..119S Lightcurve 16.7149 2 Sidereal Durech 2020A&A...643A..59D Model 16.7229 2 Synodic Pal 2020ApJS..247...26P Lightcurve 17.1270 2 Synodic Waszczak 2015AJ....150...75W Lightcurve