{"id":2650,"slug":"gj-3138-d","name":"GJ 3138 d","domain":"exoplanet","class":"exoplanet","otype":null,"otype_label":"Exoplanet","ra":32.2977385,"dec":-16.3392495,"coo_err_mas":null,"coo_bibcode":null,"plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":null,"redshift":null,"dist_pc":28.4712,"vmag":10.8275,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":0,"simbad_oid":null,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":"GJ 3138 d","host_object_id":1870996,"depth":0,"deep_at":null,"views":6,"first_seen":"2026-08-14T16:25:51.971135+00:00","updated_at":"2026-10-18T03:30:41.791363+00:00","identifiers":[],"measurements":[{"parameter":"eccentricity","value":0.32,"value_text":null,"unit":null,"err_plus":0.2,"err_minus":0.21,"band":null,"method":"Radial Velocity","source":"nasa-exo","reference":"Astudillo-Defru et al. 2017","ref_year":2017},{"parameter":"mass","value":10.5,"value_text":null,"unit":"M_earth","err_plus":2.3,"err_minus":2.1,"band":null,"method":"Radial Velocity","source":"nasa-exo","reference":"Astudillo-Defru et al. 2017","ref_year":2017},{"parameter":"orbital_period","value":257.8,"value_text":null,"unit":"d","err_plus":3.6,"err_minus":3.5,"band":null,"method":"Radial Velocity","source":"nasa-exo","reference":"Astudillo-Defru et al. 2017","ref_year":2017},{"parameter":"semi_major_axis","value":0.698,"value_text":null,"unit":"au","err_plus":0.018,"err_minus":0.019,"band":null,"method":"Radial Velocity","source":"nasa-exo","reference":"Astudillo-Defru et al. 2017","ref_year":2017}],"orbit":null,"exoplanet":{"object_id":2650,"pl_name":"GJ 3138 d","hostname":"GJ 3138","sy_pnum":3,"disc_method":"Radial Velocity","disc_year":2017,"disc_facility":"La Silla Observatory","orbper_d":257.8,"orbsmax_au":0.698,"rade":3.23,"radj":0.288,"masse":10.5,"massj":0.03303653,"dens_gcm3":1.71,"eccen":0.32,"insol":0.1,"eqt_k":151.7,"st_teff":3717.0,"st_rad":0.5,"st_mass":0.681,"st_spectype":"M0","sy_dist_pc":28.4712,"updated_at":"2026-10-18T03:30:41.791363+00:00"},"sources":[]}