value quality siderealorsynodic author ref method 8.3190 2- Synodic Erasmus 2020ApJS..247...13E Lightcurve 8.3203 2 Sidereal Durech 2023A&A...675A..24D Model 8.3203 2 Sidereal Athanasopoulos 2024A%26A...690A.215A Model 8.3223 2 Synodic Pal 2020ApJS..247...26P Lightcurve