value quality siderealorsynodic author ref method 5.3826 2 Sidereal Durech 2018A&A...617A..57D Model 5.3826 2 Sidereal Durech 2020A&A...643A..59D Model 5.3830 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 5.3900 2 Synodic Chang 2016ApJS..227...20C Lightcurve