value quality siderealorsynodic author ref method 14.6131 2 Synodic Pal 2020ApJS..247...26P Lightcurve 4.7700 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 4.7715 2 Sidereal Durech 2023A&A...675A..24D Model