value quality siderealorsynodic author ref method 4.6560 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 4.6646 2 Sidereal Durech 2023A&A...675A..24D Model 5.2000 2 Synodic Chiorny 2007P&SS...55..986C Lightcurve