value quality siderealorsynodic author ref method 12.7082 2+ Synodic Singh 2020MPBu...47...74S Lightcurve 12.7998 2 Synodic Pal 2020ApJS..247...26P Lightcurve 12.8059 2 Sidereal Durech 2020A&A...643A..59D Model 12.8110 3- Synodic Dose 2021MPBu...48..125D Lightcurve