{"id":3486315,"slug":"k2-221-13318873","name":"K2-221","domain":"deep-sky","class":"star","otype":"*","otype_label":"Star","ra":16.654980023029996,"dec":10.189681108330001,"coo_err_mas":0.0139,"coo_bibcode":"2020yCat.1350....0G","plx_mas":3.2109,"pmra":11.112,"pmdec":13.32,"rv_kms":7.5689,"redshift":2.5247451e-05,"dist_pc":null,"vmag":12.7,"bmag":13.34,"gmag":12.401833,"jmag":11.229,"kmag":10.852,"sp_type":"G4","morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":16,"simbad_oid":13318873,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":0,"deep_at":null,"views":1,"first_seen":"2026-08-14T16:53:53.858253+00:00","updated_at":"2026-10-18T03:33:23.823828+00:00","identifiers":["K2-221"],"measurements":[{"parameter":"effective_temperature","value":5716.0,"value_text":null,"unit":"K","err_plus":50.0,"err_minus":50.0,"band":null,"method":null,"source":"nasa-exo","reference":"Mayo et al. 2018","ref_year":2018},{"parameter":"mass","value":1.010842,"value_text":null,"unit":"M_sun","err_plus":0.024045,"err_minus":0.024502,"band":null,"method":null,"source":"nasa-exo","reference":"Mayo et al. 2018","ref_year":2018},{"parameter":"radius","value":1.0711,"value_text":null,"unit":"R_sun","err_plus":0.0249,"err_minus":0.0069,"band":null,"method":null,"source":"nasa-exo","reference":"Kruse et al. 2019","ref_year":2019},{"parameter":"radius","value":0.947599,"value_text":null,"unit":"R_sun","err_plus":0.044755,"err_minus":0.029278,"band":null,"method":null,"source":"nasa-exo","reference":"Mayo et al. 2018","ref_year":2018}],"orbit":null,"exoplanet":null,"sources":[]}