value unc_up unc_lo author ref method 7.72 nan nan Erasmus 2020ApJS..247...13E Lightcurve 7.72 nan nan Durech 2019A&A...631A...2D Model 7.72 nan nan Behrend LCDB Lightcurve 7.73 nan nan Waszczak 2015AJ....150...75W Lightcurve 7.80 nan nan Pravec LCDB Lightcurve