value quality siderealorsynodic author ref method 8.5805 2 Synodic Pal 2020ApJS..247...26P Lightcurve 8.5810 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 8.5834 2 Sidereal Durech 2023A&A...675A..24D Model