value quality siderealorsynodic author ref method 2.7790 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 2.7790 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 2.7794 2 Sidereal Durech 2023A&A...675A..24D Model