value quality siderealorsynodic author ref method 9.7400 3- Synodic Durkee 2018MPBu...45..333D Lightcurve 9.7410 3- Synodic Dose 2021MPBu...48...69D Lightcurve 9.7435 3- Synodic Owings 2021MPBu...48..236O Lightcurve