value quality siderealorsynodic author ref method 5.4680 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.4687 2 Sidereal Durech 2020A&A...643A..59D Model 5.4687 2 Sidereal Durech 2023A&A...675A..24D Model