value quality siderealorsynodic author ref method 6.1140 2+ Synodic Behrend LCDB Lightcurve 6.1144 2 Sidereal Durech 2020A&A...643A..59D Model 6.1144 2 Sidereal Durech 2023A&A...675A..24D Model 6.1150 2 Synodic Waszczak 2015AJ....150...75W Lightcurve