value quality siderealorsynodic author ref method 24.9370 3 Synodic Mottola 2011AJ....141..170M Lightcurve 25.0520 2+ Synodic Szabo 2017A&A...599A..44S Lightcurve 29.9500 3- Synodic Ryan 2017AJ....153..116R Lightcurve