value quality siderealorsynodic author ref method 36.2657 2 Sidereal Durech 2020A&A...643A..59D Model 36.2660 2 Sidereal Durech 2023A&A...675A..24D Model 36.3100 2+ Synodic Ferrero 2016MPBu...43..320F Lightcurve