{"id":10180,"slug":"k2-139-b","name":"K2-139 b","domain":"exoplanet","class":"exoplanet","otype":"Pl","otype_label":"Planet","ra":289.066707,"dec":-17.9107147,"coo_err_mas":0.0143,"coo_bibcode":"2020yCat.1350....0G","plx_mas":6.5372,"pmra":37.228,"pmdec":-10.551,"rv_kms":null,"redshift":null,"dist_pc":153.856,"vmag":11.652,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":26,"simbad_oid":11974526,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":"K2-139 b","host_object_id":2753467,"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":["K2-139b"],"measurements":[{"parameter":"eccentricity","value":0.12,"value_text":null,"unit":null,"err_plus":0.12,"err_minus":0.08,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"equilibrium_temperature","value":524.0,"value_text":null,"unit":"K","err_plus":8.0,"err_minus":8.0,"band":null,"method":"Transit","source":"nasa-exo","reference":"Livingston et al. 2018","ref_year":2018},{"parameter":"equilibrium_temperature","value":565.0,"value_text":null,"unit":"K","err_plus":48.0,"err_minus":32.0,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"mass","value":123.00021,"value_text":null,"unit":"M_earth","err_plus":26.37989,"err_minus":23.83725,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"orbital_period","value":28.38246,"value_text":null,"unit":"d","err_plus":0.0002,"err_minus":0.0002,"band":null,"method":"Transit","source":"nasa-exo","reference":"Kruse et al. 2019","ref_year":2019},{"parameter":"orbital_period","value":28.382071,"value_text":null,"unit":"d","err_plus":0.000275,"err_minus":0.000274,"band":null,"method":"Transit","source":"nasa-exo","reference":"Mayo et al. 2018","ref_year":2018},{"parameter":"orbital_period","value":28.382206,"value_text":null,"unit":"d","err_plus":0.000318,"err_minus":0.000318,"band":null,"method":"Transit","source":"nasa-exo","reference":"Petigura et al. 2018","ref_year":2018},{"parameter":"orbital_period","value":28.38236,"value_text":null,"unit":"d","err_plus":0.00026,"err_minus":0.00026,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"orbital_period","value":28.380619,"value_text":null,"unit":"d","err_plus":0.000551,"err_minus":0.000528,"band":null,"method":"Transit","source":"nasa-exo","reference":"Livingston et al. 2018","ref_year":2018},{"parameter":"radius","value":9.62,"value_text":null,"unit":"R_earth","err_plus":0.48,"err_minus":0.69,"band":null,"method":"Transit","source":"nasa-exo","reference":"Kruse et al. 2019","ref_year":2019},{"parameter":"radius","value":9.5,"value_text":null,"unit":"R_earth","err_plus":0.6,"err_minus":0.5,"band":null,"method":"Transit","source":"nasa-exo","reference":"Petigura et al. 2018","ref_year":2018},{"parameter":"radius","value":9.26802368,"value_text":null,"unit":"R_earth","err_plus":0.42219632,"err_minus":0.30585765,"band":null,"method":"Transit","source":"nasa-exo","reference":"Mayo et al. 2018","ref_year":2018},{"parameter":"radius","value":9.11,"value_text":null,"unit":"R_earth","err_plus":0.17,"err_minus":0.17,"band":null,"method":"Transit","source":"nasa-exo","reference":"Livingston et al. 2018","ref_year":2018},{"parameter":"radius","value":9.056872,"value_text":null,"unit":"R_earth","err_plus":0.381106,"err_minus":0.369897,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"semi_major_axis","value":0.179,"value_text":null,"unit":"au","err_plus":0.021,"err_minus":0.027,"band":null,"method":"Transit","source":"nasa-exo","reference":"Barrag&aacute;n et al. 2018","ref_year":2018},{"parameter":"semi_major_axis","value":0.1796,"value_text":null,"unit":"au","err_plus":0.0015,"err_minus":0.0015,"band":null,"method":"Transit","source":"nasa-exo","reference":"Livingston et al. 2018","ref_year":2018}],"orbit":null,"exoplanet":{"object_id":10180,"pl_name":"K2-139 b","hostname":"K2-139","sy_pnum":1,"disc_method":"Transit","disc_year":2017,"disc_facility":"K2","orbper_d":28.380619,"orbsmax_au":0.1796,"rade":9.11,"radj":0.81273976,"masse":123.00021,"massj":0.387,"dens_gcm3":0.91,"eccen":0.12,"insol":15.5562,"eqt_k":524.0,"st_teff":5370.0,"st_rad":0.88,"st_mass":0.96,"st_spectype":"K0 V","sy_dist_pc":153.856,"updated_at":"2026-09-13T03:31:17.289698+00:00"},"sources":[]}