value quality siderealorsynodic author ref method 310.0000 2 Synodic Stephens 2021MPBu...48..246S Lightcurve 317.0000 2 Synodic Polakis 2017MPBu...44..299P Lightcurve 317.0000 2 Synodic Polakis 2017MPBu...44..299P Lightcurve 317.0000 2+ Synodic Polakis 2017MPBu...44..299P Lightcurve 317.0000 2+ Synodic Skiff LCDB Lightcurve 318.0000 3 Synodic Pilcher 2017MPBu...44...87P Lightcurve 320.7900 2 Sidereal Durech 2019A&A...631A...2D Model 320.7999 2 Sidereal Martikainen 2021A&A...649A..98M Model 8.7400 1 Synodic Behrend LCDB Lightcurve 8.7400 1 Synodic Behrend LCDB Lightcurve