value quality siderealorsynodic author ref method 13.8000 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 13.8024 2 Synodic Pal 2020ApJS..247...26P Lightcurve 13.8040 2 Synodic Behrend LCDB Lightcurve 13.8055 2 Sidereal Hanus 2013A&A...551A..67H Model 13.8070 3 Synodic Pilcher 2009MPBu...36...25P Lightcurve