value quality siderealorsynodic author ref method 4.4957 2 Sidereal Durech 2023A&A...675A..24D Model 4.4960 2 Synodic Waszczak 2015AJ....150...75W Lightcurve 4.5000 2 Synodic Chang 2014ApJ...788...17C Lightcurve