value quality siderealorsynodic author ref method 3.8600 1+ Synodic Behrend LCDB Lightcurve 7.0480 3 Synodic Schober 1983A&A...120..106S Lightcurve 7.0679 2 Sidereal Martikainen 2021A&A...649A..98M Model 7.0680 2 Sidereal Hanus 2013A&A...551A..67H Model 7.0700 3 Synodic Ruthroff 2010MPBu...37..158R Lightcurve