value quality siderealorsynodic author ref method 13.5066 2 Sidereal Durech 2020A&A...643A..59D Model 13.5068 2 Sidereal Durech 2023A&A...675A..24D Model 13.5070 2 Sidereal Durech 2018A&A...617A..57D Model 13.5110 2 Synodic Waszczak 2015AJ....150...75W Lightcurve