value quality siderealorsynodic author ref method 24.0000 1 Synodic Behrend LCDB Lightcurve 8.4585 2 Sidereal Durech 2020A&A...643A..59D Model 8.4587 2 Sidereal Durech 2023A&A...675A..24D Model 8.4600 3 Synodic Behrend LCDB Lightcurve 8.4640 2+ Synodic Benishek 2020MPBu...47..231B Lightcurve