value quality siderealorsynodic author ref method 2.9800 2 Synodic Chang 2015ApJS..219...27C Lightcurve 5.9814 2 Sidereal Durech 2023A&A...675A..24D Model 5.9822 2+ Synodic Clark 2014MPBu...41..178C Lightcurve 6.0180 2 Synodic Waszczak 2015AJ....150...75W Lightcurve