value quality siderealorsynodic author ref method 3.1270 3 Synodic Gao 2020MPBu...47..151G Lightcurve 3.1270 3 Synodic Slivan 2008Icar..195..226S Lightcurve 3.1274 3- Synodic Liu 2016MPBu...43..204L Lightcurve