value quality siderealorsynodic author ref method 7.3680 2+ Synodic Warner 2014MPBu...41..144W Lightcurve 7.3890 3 Synodic Pravec 2010Natur.466.1085P Lightcurve 7.3915 2 Sidereal Wang 2021AN....342..914W Model 7.3915 2 Synodic Pravec 2019Icar..333..429P Lightcurve 7.3961 2 Synodic Pal 2020ApJS..247...26P Lightcurve