value quality siderealorsynodic author ref method 7.4170 2 Sidereal Durech 2023A&A...675A..24D Model 7.4170 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 8.7759 2 Sidereal Hanus 2013A&A...551A..67H Model