value unc_up unc_lo author ref method 14.31 nan nan Pravec LCDB Lightcurve 14.32 nan nan Pravec LCDB Lightcurve 29.05 nan nan Pal 2020ApJS..247...26P Lightcurve 7.16 nan nan Waszczak 2015AJ....150...75W Lightcurve