value quality siderealorsynodic author ref method 18.0000 2 Synodic Behrend LCDB Lightcurve 18.4200 2 Sidereal Durech 2020A&A...643A..59D Model 18.4200 2 Synodic Behrend LCDB Lightcurve 18.4212 2 Synodic Pal 2020ApJS..247...26P Lightcurve 18.4650 3 Synodic Robinson 2002MPBu...29...54R Lightcurve 18.4700 2- Synodic Behrend LCDB Lightcurve 18.4700 2+ Synodic Behrend LCDB Lightcurve