value quality siderealorsynodic author ref method 3.6580 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 3.6612 3- Synodic Odden 2016MPBu...43..218O Lightcurve 3.6615 2 Sidereal Durech 2018A&A...617A..57D Model