value quality siderealorsynodic author ref method 8.0318 2 Sidereal Durech 2023A&A...675A..24D Model 8.0330 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 8.0376 2 Synodic Pal 2020ApJS..247...26P Lightcurve