{"id":2570,"slug":"kepler-121-b","name":"Kepler-121 b","domain":"exoplanet","class":"exoplanet","otype":null,"otype_label":"Exoplanet","ra":286.1621273,"dec":39.6780204,"coo_err_mas":null,"coo_bibcode":null,"plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":null,"redshift":null,"dist_pc":510.523,"vmag":14.904,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":18,"simbad_oid":8583710,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":"Kepler-121 b","host_object_id":2799726,"depth":0,"deep_at":null,"views":2,"first_seen":"2026-08-14T16:25:51.971135+00:00","updated_at":"2026-09-13T03:31:17.289698+00:00","identifiers":["Kepler-121b"],"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-Q8 KOI Table","ref_year":2014},{"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":2014},{"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":2014},{"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":2014},{"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":2014},{"parameter":"equilibrium_temperature","value":1025.0,"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":2014},{"parameter":"equilibrium_temperature","value":1008.0,"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":2014},{"parameter":"equilibrium_temperature","value":997.0,"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":2014},{"parameter":"equilibrium_temperature","value":1008.0,"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":2014},{"parameter":"equilibrium_temperature","value":1008.0,"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":2014},{"parameter":"orbital_period","value":3.1774174766,"value_text":null,"unit":"d","err_plus":1.6802e-06,"err_minus":1.6802e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Gajdo&scaron; et al. 2019","ref_year":2019},{"parameter":"orbital_period","value":3.177414418,"value_text":null,"unit":"d","err_plus":1.583e-06,"err_minus":1.583e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Morton et al. 2016","ref_year":2016},{"parameter":"orbital_period","value":3.17741077,"value_text":null,"unit":"d","err_plus":5.4e-07,"err_minus":5.4e-07,"band":null,"method":"Transit","source":"nasa-exo","reference":"Holczer et al. 2016","ref_year":2016},{"parameter":"orbital_period","value":3.177414601,"value_text":null,"unit":"d","err_plus":1.587e-06,"err_minus":1.587e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 Supplemental KOI Table","ref_year":2014},{"parameter":"orbital_period","value":3.177414601,"value_text":null,"unit":"d","err_plus":1.587e-06,"err_minus":1.587e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2014},{"parameter":"orbital_period","value":3.177414418,"value_text":null,"unit":"d","err_plus":1.583e-06,"err_minus":1.583e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2014},{"parameter":"orbital_period","value":3.177414418,"value_text":null,"unit":"d","err_plus":1.583e-06,"err_minus":1.583e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2014},{"parameter":"orbital_period","value":3.177422,"value_text":null,"unit":"d","err_plus":3e-06,"err_minus":3e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Rowe et al. 2014","ref_year":2014},{"parameter":"orbital_period","value":3.1774266,"value_text":null,"unit":"d","err_plus":6.2e-06,"err_minus":6.2e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2014},{"parameter":"orbital_period","value":3.177414418,"value_text":null,"unit":"d","err_plus":1.583e-06,"err_minus":1.583e-06,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2014},{"parameter":"radius","value":2.56,"value_text":null,"unit":"R_earth","err_plus":0.316,"err_minus":0.285,"band":null,"method":"Transit","source":"nasa-exo","reference":"Berger et al. 2018","ref_year":2018},{"parameter":"radius","value":2.78,"value_text":null,"unit":"R_earth","err_plus":0.24,"err_minus":0.2,"band":null,"method":"Transit","source":"nasa-exo","reference":"Morton et al. 2016","ref_year":2016},{"parameter":"radius","value":2.34,"value_text":null,"unit":"R_earth","err_plus":1.27,"err_minus":1.27,"band":null,"method":"Transit","source":"nasa-exo","reference":"Rowe et al. 2014","ref_year":2014},{"parameter":"radius","value":2.84,"value_text":null,"unit":"R_earth","err_plus":0.87,"err_minus":0.87,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q8 KOI Table","ref_year":2014},{"parameter":"radius","value":2.47,"value_text":null,"unit":"R_earth","err_plus":0.54,"err_minus":0.18,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q16 KOI Table","ref_year":2014},{"parameter":"radius","value":2.47,"value_text":null,"unit":"R_earth","err_plus":0.54,"err_minus":0.18,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR24 KOI Table","ref_year":2014},{"parameter":"radius","value":2.47,"value_text":null,"unit":"R_earth","err_plus":0.54,"err_minus":0.18,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q12 KOI Table","ref_year":2014},{"parameter":"radius","value":2.65,"value_text":null,"unit":"R_earth","err_plus":0.41,"err_minus":0.19,"band":null,"method":"Transit","source":"nasa-exo","reference":"Q1-Q17 DR25 KOI Table","ref_year":2014},{"parameter":"semi_major_axis","value":0.0389,"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":2014},{"parameter":"semi_major_axis","value":0.04,"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":2014},{"parameter":"semi_major_axis","value":0.039,"value_text":null,"unit":"au","err_plus":null,"err_minus":null,"band":null,"method":"Transit","source":"nasa-exo","reference":"Rowe et al. 2014","ref_year":2014},{"parameter":"semi_major_axis","value":0.0389,"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":2014},{"parameter":"semi_major_axis","value":0.0389,"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":2014},{"parameter":"semi_major_axis","value":0.039,"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":2014}],"orbit":null,"exoplanet":{"object_id":2570,"pl_name":"Kepler-121 b","hostname":"Kepler-121","sy_pnum":2,"disc_method":"Transit","disc_year":2014,"disc_facility":"Kepler","orbper_d":3.177422,"orbsmax_au":0.039,"rade":2.34,"radj":0.209,"masse":6.08,"massj":0.0191,"dens_gcm3":2.61,"eccen":0.0,"insol":220.489,"eqt_k":997.0,"st_teff":5311.0,"st_rad":0.701,"st_mass":0.859,"st_spectype":null,"sy_dist_pc":510.523,"updated_at":"2026-09-13T03:31:17.289698+00:00"},"sources":[]}