value quality siderealorsynodic author ref method 3.6438 2 Synodic Pal 2020ApJS..247...26P Lightcurve 3.6640 3- Synodic Casalnuovo 2017MPBu...44..178C Lightcurve 3.6677 2 Sidereal Durech 2023A&A...675A..24D Model