value quality siderealorsynodic author ref method 2.9200 Synodic Erasmus 2019ApJS..242...15E Lightcurve 7.7480 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 7.8000 2 Synodic Chang 2015ApJS..219...27C Lightcurve 7.8010 3 Synodic Owings 2013MPBu...40..104O Lightcurve 7.8050 3 Synodic Stephens 2013MPBu...40...34S Lightcurve