value unc_up unc_lo author ref method 19.02 nan nan Durech 2023A&A...675A..24D Model 19.03 nan nan Dose 2023MPBu...50..151D Lightcurve 19.08 nan nan Waszczak 2015AJ....150...75W Lightcurve 19.54 nan nan Pal 2020ApJS..247...26P Lightcurve 22.19 nan nan Behrend LCDB Lightcurve