value quality siderealorsynodic author ref method 3.4672 3 Synodic Warner 2019MPBu...46..412W Lightcurve 3.4690 2 Synodic Casalnuovo 2020MPBu...47...11C Lightcurve 3.4700 2 Synodic Carreno 2020MPBu...47....7C Lightcurve