value quality siderealorsynodic author ref method 8.9360 3 Synodic Stephens 2018MPBu...45..124S Lightcurve 8.9450 3 Synodic Stephens 2019MPBu...46..315S Lightcurve 8.9460 3 Synodic Stephens 2020MPBu...47..285S Lightcurve 8.9490 Synodic McNeill 2021PSJ.....2....6M Lightcurve 8.9510 3- Synodic Stephens 2017MPBu...44..123S Lightcurve 8.9600 3 Synodic Gonano 1991AdSpR..11l.197G Lightcurve 8.9900 3- Synodic Stephens 2016MPBu...43..265S Lightcurve