value quality siderealorsynodic author ref method 9.5112 2 Sidereal Durech 2019A&A...631A...2D Model 9.5160 2 Synodic Behrend LCDB Lightcurve 9.5160 3 Synodic Harris 1989Icar...81..314H Lightcurve 9.5200 3- Synodic Behrend LCDB Lightcurve