value quality siderealorsynodic author ref method 3.6870 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 3.6870 3 Synodic Carbognani 2011MPBu...38...57C Lightcurve 3.6878 2 Sidereal Durech 2023A&A...675A..24D Model 3.6878 2 Sidereal Durech 2019A&A...631A...2D Model