value quality siderealorsynodic author ref method 25.5390 2 Sidereal Durech 2023A&A...675A..24D Model 25.5460 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 25.5850 2 Synodic Pal 2020ApJS..247...26P Lightcurve