value quality siderealorsynodic author ref method 11.4200 2 Synodic Pravec LCDB Lightcurve 11.3890 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 11.3985 2 Sidereal Durech 2019A&A...631A...2D Model 11.3985 2 Sidereal Durech 2023A&A...675A..24D Model 24.0000 2 Synodic Stephens 2009MPBu...36...18S Lightcurve