{"id":1951154,"slug":"bd-31-1970","name":"BD+31 1970","domain":"deep-sky","class":"star","otype":"Em*","otype_label":"EmLine*","ra":139.99098275905,"dec":30.95665825822,"coo_err_mas":0.0956,"coo_bibcode":"2020yCat.1350....0G","plx_mas":3.6303,"pmra":-13.732,"pmdec":-9.379,"rv_kms":-47.21,"redshift":-0.00015746322,"dist_pc":null,"vmag":9.63,"bmag":10.22,"gmag":9.57947,"jmag":8.669,"kmag":8.377,"sp_type":"F5","morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":6,"simbad_oid":1614514,"gaia_dr3":700598604376600064,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":1,"deep_at":"2026-08-23T14:10:47.902659+00:00","views":6,"first_seen":"2026-08-14T16:50:37.517913+00:00","updated_at":"2026-08-14T16:50:37.517913+00:00","identifiers":["2MASS J09195783+3057238","AG+31 926","AP J09195783+3057238","BD+31 1970","Gaia DR2 700598604376600064","Gaia DR3 700598604376600064","GSC 02493-00870","LAMOST J091957.83+305723.8","PPM 74415","SAO 61404","TIC 8766412","TYC 2493-870-1"],"measurements":[{"parameter":"distance","value":261.1101,"value_text":null,"unit":"pc","err_plus":null,"err_minus":null,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"distance","value":275.459,"value_text":null,"unit":"pc","err_plus":8.0051,"err_minus":-8.0051,"band":null,"method":"paral","source":"simbad","reference":"2020yCat.1350....0G","ref_year":2020},{"parameter":"distance","value":287.0923,"value_text":null,"unit":"pc","err_plus":7.2943,"err_minus":-7.2943,"band":null,"method":"paral","source":"simbad","reference":"2018yCat.1345....0G","ref_year":2018},{"parameter":"effective_temperature","value":6224.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2023ApJS..264...17Z","ref_year":2023},{"parameter":"effective_temperature","value":6036.4985,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"effective_temperature","value":5791.0,"value_text":null,"unit":"K","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2022AJ....163..152S","ref_year":2022},{"parameter":"magnitude","value":9.57947,"value_text":null,"unit":"mag","err_plus":null,"err_minus":null,"band":"G","method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"magnitude","value":9.57947,"value_text":null,"unit":"mag","err_plus":0.002795,"err_minus":0.002795,"band":"G","method":"V","source":"simbad","reference":"2020yCat.1350....0G","ref_year":2020},{"parameter":"magnitude","value":8.669,"value_text":null,"unit":"mag","err_plus":0.027,"err_minus":0.027,"band":"J","method":null,"source":"simbad","reference":"2003yCat.2246....0C","ref_year":2003},{"parameter":"magnitude","value":8.377,"value_text":null,"unit":"mag","err_plus":0.019,"err_minus":0.019,"band":"K","method":null,"source":"simbad","reference":"2003yCat.2246....0C","ref_year":2003},{"parameter":"magnitude","value":8.441,"value_text":null,"unit":"mag","err_plus":0.021,"err_minus":0.021,"band":"H","method":null,"source":"simbad","reference":"2003yCat.2246....0C","ref_year":2003},{"parameter":"magnitude","value":9.63,"value_text":null,"unit":"mag","err_plus":0.03,"err_minus":0.03,"band":"V","method":"V","source":"simbad","reference":"2000A&A...355L..27H","ref_year":2000},{"parameter":"magnitude","value":10.22,"value_text":null,"unit":"mag","err_plus":0.03,"err_minus":0.03,"band":"B","method":"V","source":"simbad","reference":"2000A&A...355L..27H","ref_year":2000},{"parameter":"metallicity","value":-0.031,"value_text":null,"unit":"dex","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2023ApJS..264...17Z","ref_year":2023},{"parameter":"metallicity","value":-0.4162,"value_text":null,"unit":"dex","err_plus":null,"err_minus":null,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"metallicity","value":-0.222,"value_text":null,"unit":"dex","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2022AJ....163..152S","ref_year":2022},{"parameter":"parallax","value":3.630312325998569,"value_text":null,"unit":"mas","err_plus":0.105527386,"err_minus":0.105527386,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"parallax","value":3.6303,"value_text":null,"unit":"mas","err_plus":0.1055,"err_minus":0.1055,"band":null,"method":null,"source":"simbad","reference":"2020yCat.1350....0G","ref_year":2020},{"parameter":"parallax","value":3.4832,"value_text":null,"unit":"mas","err_plus":0.0885,"err_minus":0.0885,"band":null,"method":null,"source":"simbad","reference":"2018yCat.1345....0G","ref_year":2018},{"parameter":"pm_dec","value":-9.378916057747249,"value_text":null,"unit":"mas/yr","err_plus":0.101001784,"err_minus":0.101001784,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"pm_dec","value":-9.379,"value_text":null,"unit":"mas/yr","err_plus":0.101,"err_minus":0.101,"band":null,"method":"ICRS","source":"simbad","reference":"2020yCat.1350....0G","ref_year":2020},{"parameter":"pm_dec","value":-6.756,"value_text":null,"unit":"mas/yr","err_plus":0.076,"err_minus":0.076,"band":null,"method":"ICRS","source":"simbad","reference":"2018yCat.1345....0G","ref_year":2018},{"parameter":"pm_dec","value":-18.0,"value_text":null,"unit":"mas/yr","err_plus":7.0,"err_minus":7.0,"band":null,"method":"FK4","source":"simbad","reference":"1971IAUCo...7..153L","ref_year":1971},{"parameter":"pm_ra","value":-13.732182046261864,"value_text":null,"unit":"mas/yr","err_plus":0.112894565,"err_minus":0.112894565,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"pm_ra","value":-13.732,"value_text":null,"unit":"mas/yr","err_plus":0.113,"err_minus":0.113,"band":null,"method":"ICRS","source":"simbad","reference":"2020yCat.1350....0G","ref_year":2020},{"parameter":"pm_ra","value":-16.108,"value_text":null,"unit":"mas/yr","err_plus":0.11,"err_minus":0.11,"band":null,"method":"ICRS","source":"simbad","reference":"2018yCat.1345....0G","ref_year":2018},{"parameter":"pm_ra","value":-4.0,"value_text":null,"unit":"mas/yr","err_plus":8.0,"err_minus":8.0,"band":null,"method":"FK4","source":"simbad","reference":"1971IAUCo...7..153L","ref_year":1971},{"parameter":"radial_velocity","value":-47.21,"value_text":null,"unit":"km/s","err_plus":4.43,"err_minus":4.43,"band":null,"method":"v","source":"simbad","reference":"2023ApJS..264...17Z","ref_year":2023},{"parameter":"radial_velocity","value":3.284243,"value_text":null,"unit":"km/s","err_plus":15.252806,"err_minus":15.252806,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"ruwe","value":4.8351555,"value_text":null,"unit":null,"err_plus":null,"err_minus":null,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"spectral_type","value":null,"value_text":"F5","unit":null,"err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2023ApJS..264...17Z","ref_year":2023},{"parameter":"surface_gravity","value":3.8721,"value_text":null,"unit":"log(cm/s2)","err_plus":null,"err_minus":null,"band":null,"method":"Gaia DR3","source":"gaia-dr3","reference":"2023A&A...674A...1G","ref_year":2023},{"parameter":"surface_gravity","value":3.694,"value_text":null,"unit":"log(cm/s2)","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2023ApJS..264...17Z","ref_year":2023},{"parameter":"surface_gravity","value":4.056,"value_text":null,"unit":"log(cm/s2)","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2022AJ....163..152S","ref_year":2022}],"orbit":null,"exoplanet":null,"sources":[{"source":"simbad","url":"https://simbad.cds.unistra.fr/simbad/sim-basic?Ident=BD+31 1970","fetched_at":"2026-08-23T14:07:44.468262+00:00"},{"source":"gaia-dr3","url":"https://vizier.cds.unistra.fr/viz-bin/VizieR-S?Gaia%20DR3%20700598604376600064","fetched_at":"2026-08-23T14:07:47.749641+00:00"}]}