value quality siderealorsynodic author ref method 6.5400 2 Synodic Behrend LCDB Lightcurve 6.5400 2 Synodic Behrend LCDB Lightcurve 6.5445 2 Sidereal Hanus 2018Icar..299...84H Model 6.5445 2 Sidereal Hanus LCDB Model 6.5445 2 Sidereal Martikainen 2021A&A...649A..98M Model 6.5445 2 Sidereal Hanus 2011A&A...530A.134H Model 6.5447 3- Synodic Behrend LCDB Lightcurve