value quality siderealorsynodic author ref method 6.7460 2 Synodic Wisniewski 1997Icar..126..395W Lightcurve 6.9398 2 Synodic Kryszczynska 2012A&A...546A..72K Lightcurve 6.9398 2 Sidereal Durech 2009A&A...493..291D Model 6.9398 2 Sidereal Durech LCDB Model 6.9398 2 Sidereal Hanus 2011A&A...530A.134H Model 6.9398 2 Sidereal Kryszczynska LCDB Model 6.9400 3 Synodic Ferrero 2012MPBu...39..138F Lightcurve