{"id":6979,"slug":"kepler-521-b","name":"Kepler-521 b","domain":"exoplanet","class":"exoplanet","otype":null,"otype_label":"Exoplanet","ra":298.8163801,"dec":43.9980203,"coo_err_mas":null,"coo_bibcode":null,"plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":null,"redshift":null,"dist_pc":830.638,"vmag":12.94,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":23,"simbad_oid":8998081,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":"Kepler-521 b","host_object_id":2800074,"depth":0,"deep_at":null,"views":3,"first_seen":"2026-08-14T16:25:51.971135+00:00","updated_at":"2026-09-13T03:31:17.289698+00:00","identifiers":["Kepler-521b"],"measurements":[{"parameter":"eccentricity","value":0.0,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2016},{"parameter":"eccentricity","value":0.0,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2016},{"parameter":"eccentricity","value":0.0,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2016},{"parameter":"eccentricity","value":0.0,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2016},{"parameter":"eccentricity","value":0.0,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2016},{"parameter":"equilibrium_temperature","value":940.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2016},{"parameter":"equilibrium_temperature","value":940.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2016},{"parameter":"equilibrium_temperature","value":953.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2016},{"parameter":"equilibrium_temperature","value":803.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2016},{"parameter":"equilibrium_temperature","value":940.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.2074675863,"value_text":null,"unit":"d","err_plus":3.31388e-05,"err_minus":3.31388e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Gajdoš et al. 2019","ref_year":2019},{"parameter":"orbital_period","value":22.20813214,"value_text":null,"unit":"d","err_plus":4.013e-05,"err_minus":4.013e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Fulton & Petigura 2018","ref_year":2018},{"parameter":"orbital_period","value":22.20813214,"value_text":null,"unit":"d","err_plus":4.013e-05,"err_minus":4.013e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Morton et al. 2016","ref_year":2016},{"parameter":"orbital_period","value":22.20813214,"value_text":null,"unit":"d","err_plus":4.013e-05,"err_minus":4.013e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.20809549,"value_text":null,"unit":"d","err_plus":4.141e-05,"err_minus":4.141e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 Supplemental KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.20799506,"value_text":null,"unit":"d","err_plus":2.14e-06,"err_minus":2.14e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Holczer et al. 2016","ref_year":2016},{"parameter":"orbital_period","value":22.20792,"value_text":null,"unit":"d","err_plus":0.00013,"err_minus":0.00013,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.20813214,"value_text":null,"unit":"d","err_plus":4.013e-05,"err_minus":4.013e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.20813214,"value_text":null,"unit":"d","err_plus":4.013e-05,"err_minus":4.013e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2016},{"parameter":"orbital_period","value":22.20809549,"value_text":null,"unit":"d","err_plus":4.141e-05,"err_minus":4.141e-05,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2016},{"parameter":"radius","value":3.559,"value_text":null,"unit":"R_earth","err_plus":0.101,"err_minus":0.101,"band":null,"method":"Transit","source":"nasa-exo","reference":"Fulton & Petigura 2018","ref_year":2018},{"parameter":"radius","value":3.591,"value_text":null,"unit":"R_earth","err_plus":0.174,"err_minus":0.159,"band":null,"method":"Transit","source":"nasa-exo","reference":"Berger et al. 2018","ref_year":2018},{"parameter":"radius","value":4.3,"value_text":null,"unit":"R_earth","err_plus":1.5,"err_minus":1.5,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2016},{"parameter":"radius","value":3.71,"value_text":null,"unit":"R_earth","err_plus":1.73,"err_minus":1.08,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2016},{"parameter":"radius","value":3.71,"value_text":null,"unit":"R_earth","err_plus":1.73,"err_minus":1.08,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2016},{"parameter":"radius","value":3.18,"value_text":null,"unit":"R_earth","err_plus":0.31,"err_minus":0.23,"band":null,"method":"Transit","source":"nasa-exo","reference":"Morton et al. 2016","ref_year":2016},{"parameter":"radius","value":3.02,"value_text":null,"unit":"R_earth","err_plus":0.53,"err_minus":0.28,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2016},{"parameter":"radius","value":3.71,"value_text":null,"unit":"R_earth","err_plus":1.73,"err_minus":1.08,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2016},{"parameter":"semi_major_axis","value":0.17116,"value_text":null,"unit":"au","err_plus":0.00103,"err_minus":0.00103,"band":null,"method":"Transit","source":"nasa-exo","reference":"Fulton & Petigura 2018","ref_year":2018},{"parameter":"semi_major_axis","value":0.1699,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2016},{"parameter":"semi_major_axis","value":0.173,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2016},{"parameter":"semi_major_axis","value":0.1655,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2016},{"parameter":"semi_major_axis","value":0.1655,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2016},{"parameter":"semi_major_axis","value":0.1655,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2016}],"orbit":null,"exoplanet":{"object_id":6979,"pl_name":"Kepler-521 b","hostname":"Kepler-521","sy_pnum":1,"disc_method":"Transit","disc_year":2016,"disc_facility":"Kepler","orbper_d":22.20813214,"orbsmax_au":0.17116,"rade":3.18,"radj":0.2837006,"masse":10.2,"massj":0.0322,"dens_gcm3":1.74,"eccen":0.0,"insol":160.612,"eqt_k":803.0,"st_teff":6406.0,"st_rad":1.46,"st_mass":1.34,"st_spectype":null,"sy_dist_pc":830.638,"updated_at":"2026-09-13T03:31:17.289698+00:00"},"sources":[]}