value quality siderealorsynodic author ref method 6.1240 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 6.1250 2 Synodic Pal 2020ApJS..247...26P Lightcurve 6.1254 2 Sidereal Durech 2020A&A...643A..59D Model