value quality siderealorsynodic author ref method 10.4656 2 Sidereal Durech 2023A&A...675A..24D Model 10.4790 2 Synodic Pal 2020ApJS..247...26P Lightcurve 10.5150 2+ Synodic Zeigler 2021MPBu...48..123Z Lightcurve