{"id":2032329,"slug":"bd-31-2447","name":"BD+31 2447","domain":"deep-sky","class":"star","otype":"Em*","otype_label":"EmLine*","ra":195.98186107595998,"dec":30.64007736954,"coo_err_mas":0.0132,"coo_bibcode":"2020yCat.1350....0G","plx_mas":4.1062,"pmra":-4.96,"pmdec":15.722,"rv_kms":1.53321,"redshift":5.114251e-06,"dist_pc":null,"vmag":10.337,"bmag":10.837,"gmag":10.197724,"jmag":9.302,"kmag":9.083,"sp_type":"F8","morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":63,"simbad_oid":2010271,"gaia_dr3":1464700950221781504,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":0,"deep_at":null,"views":3,"first_seen":"2026-08-14T16:50:48.069180+00:00","updated_at":"2026-09-06T03:30:06.079676+00:00","identifiers":["2MASS J13035564+3038241","AP J13035564+3038241","BD+31 2447","BSD 57-687","Gaia DR1 1464700945925007232","Gaia DR2 1464700950221781504","Gaia DR3 1464700950221781504","GEN# +0.03102447","KELT-6","LAMOST J130355.44+303829.7","SPOCS 2852","TIC 165987272","TOI-1840","TYC 2532-556-1","UBV 11796","UBV M 2210","uvby98 003102447","Weis 32018"],"measurements":[{"parameter":"effective_temperature","value":6246.0,"value_text":null,"unit":"K","err_plus":88.0,"err_minus":88.0,"band":null,"method":null,"source":"nasa-exo","reference":"Borsato et al. 2021","ref_year":2021},{"parameter":"effective_temperature","value":6272.0,"value_text":null,"unit":"K","err_plus":61.0,"err_minus":61.0,"band":null,"method":null,"source":"nasa-exo","reference":"Bonomo et al. 2017","ref_year":2017},{"parameter":"effective_temperature","value":6102.0,"value_text":null,"unit":"K","err_plus":43.0,"err_minus":43.0,"band":null,"method":null,"source":"nasa-exo","reference":"Stassun et al. 2017","ref_year":2017},{"parameter":"effective_temperature","value":6272.0,"value_text":null,"unit":"K","err_plus":61.0,"err_minus":61.0,"band":null,"method":null,"source":"nasa-exo","reference":"Damasso et al. 2015","ref_year":2015},{"parameter":"effective_temperature","value":6266.0,"value_text":null,"unit":"K","err_plus":104.7,"err_minus":104.7,"band":null,"method":null,"source":"nasa-exo","reference":"ExoFOP","ref_year":2014},{"parameter":"effective_temperature","value":6102.0,"value_text":null,"unit":"K","err_plus":43.0,"err_minus":43.0,"band":null,"method":null,"source":"nasa-exo","reference":"Collins et al. 2014","ref_year":2014},{"parameter":"mass","value":1.11,"value_text":null,"unit":"M_sun","err_plus":0.06,"err_minus":0.06,"band":null,"method":null,"source":"nasa-exo","reference":"Borsato et al. 2021","ref_year":2021},{"parameter":"mass","value":1.42,"value_text":null,"unit":"M_sun","err_plus":0.46,"err_minus":0.46,"band":null,"method":null,"source":"nasa-exo","reference":"Stassun et al. 2017","ref_year":2017},{"parameter":"mass","value":1.126,"value_text":null,"unit":"M_sun","err_plus":0.058,"err_minus":0.058,"band":null,"method":null,"source":"nasa-exo","reference":"Bonomo et al. 2017","ref_year":2017},{"parameter":"mass","value":1.126,"value_text":null,"unit":"M_sun","err_plus":0.058,"err_minus":0.058,"band":null,"method":null,"source":"nasa-exo","reference":"Damasso et al. 2015","ref_year":2015},{"parameter":"mass","value":1.085,"value_text":null,"unit":"M_sun","err_plus":0.043,"err_minus":0.04,"band":null,"method":null,"source":"nasa-exo","reference":"Collins et al. 2014","ref_year":2014},{"parameter":"radius","value":1.34,"value_text":null,"unit":"R_sun","err_plus":0.06,"err_minus":0.06,"band":null,"method":null,"source":"nasa-exo","reference":"Borsato et al. 2021","ref_year":2021},{"parameter":"radius","value":1.73,"value_text":null,"unit":"R_sun","err_plus":0.12,"err_minus":0.12,"band":null,"method":null,"source":"nasa-exo","reference":"Stassun et al. 2017","ref_year":2017},{"parameter":"radius","value":1.53,"value_text":null,"unit":"R_sun","err_plus":0.14,"err_minus":0.14,"band":null,"method":null,"source":"nasa-exo","reference":"Bonomo et al. 2017","ref_year":2017},{"parameter":"radius","value":1.529,"value_text":null,"unit":"R_sun","err_plus":0.143,"err_minus":0.137,"band":null,"method":null,"source":"nasa-exo","reference":"Damasso et al. 2015","ref_year":2015},{"parameter":"radius","value":1.58,"value_text":null,"unit":"R_sun","err_plus":0.16,"err_minus":0.094,"band":null,"method":null,"source":"nasa-exo","reference":"Collins et al. 2014","ref_year":2014},{"parameter":"radius","value":1.65,"value_text":null,"unit":"R_sun","err_plus":0.07,"err_minus":0.07,"band":null,"method":null,"source":"nasa-exo","reference":"ExoFOP","ref_year":2014}],"orbit":null,"exoplanet":null,"sources":[]}