value quality siderealorsynodic author ref method 7.5390 2+ Synodic Kryszczynska 2012A&A...546A..72K Lightcurve 7.5392 2 Sidereal Durech 2020A&A...643A..59D Model 7.5398 3 Synodic Behrend LCDB Lightcurve 8.3560 2 Synodic Di Martino 1994Icar..107..269D Lightcurve