{"id":2334699,"slug":"tuc-galaxy","name":"Tuc Galaxy","domain":"deep-sky","class":"galaxy","otype":"G","otype_label":"Galaxy","ra":340.45666666666665,"dec":-64.41944444444445,"coo_err_mas":15000.0,"coo_bibcode":"1989PASP..101..360S","plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":194.0,"redshift":0.00064732385,"dist_pc":null,"vmag":15.2,"bmag":15.7,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":"dGsp...","size_maj":2.63,"size_min":1.17,"size_angle":null,"nbref":327,"simbad_oid":3336958,"gaia_dr3":null,"jpl_spkid":null,"ned_name":"WISEA J224148.86-642510.3","exo_name":null,"host_object_id":null,"depth":1,"deep_at":"2026-09-11T04:53:35.147047+00:00","views":7,"first_seen":"2026-08-14T16:51:18.727717+00:00","updated_at":"2026-09-06T03:30:06.079676+00:00","identifiers":["EQ 2238-646","LEDA 69519","SGC 223828-6440.9","Tucana dSph","Tucana Dwarf Galaxy","Tuc Dwarf Galaxy","Tuc Galaxy"],"measurements":[{"parameter":"distance","value":0.92,"value_text":null,"unit":"Mpc","err_plus":null,"err_minus":null,"band":null,"method":"redshift","source":"simbad","reference":"2018MNRAS.479.4136K","ref_year":2018},{"parameter":"distance","value":0.92,"value_text":null,"unit":"Mpc","err_plus":null,"err_minus":null,"band":null,"method":"T-RDB","source":"simbad","reference":"2017AJ....153....6K","ref_year":2017},{"parameter":"distance","value":0.9,"value_text":null,"unit":"Mpc","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2016AJ....152...50T","ref_year":2016},{"parameter":"distance","value":0.9,"value_text":null,"unit":"Mpc","err_plus":0.06,"err_minus":-0.06,"band":null,"method":null,"source":"simbad","reference":"2013AJ....146...86T","ref_year":2013},{"parameter":"distance","value":0.88,"value_text":null,"unit":"Mpc","err_plus":0.09,"err_minus":-0.09,"band":null,"method":"T-RGB","source":"simbad","reference":"2007AJ....133..504K","ref_year":2007},{"parameter":"magnitude","value":15.2,"value_text":null,"unit":"mag","err_plus":0.2,"err_minus":0.2,"band":"V","method":"V","source":"simbad","reference":"2012AJ....144....4M","ref_year":2012},{"parameter":"magnitude","value":15.7,"value_text":null,"unit":"mag","err_plus":null,"err_minus":null,"band":"B","method":null,"source":"simbad","reference":null,"ref_year":null},{"parameter":"metallicity","value":-1.55,"value_text":null,"unit":"dex","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2024ApJ...965...36F","ref_year":2024},{"parameter":"metallicity","value":-1.97,"value_text":null,"unit":"dex","err_plus":null,"err_minus":null,"band":null,"method":null,"source":"simbad","reference":"2012AJ....144..183L","ref_year":2012},{"parameter":"radial_velocity","value":194.0,"value_text":null,"unit":"km/s","err_plus":null,"err_minus":null,"band":null,"method":"v","source":"simbad","reference":"2016AJ....152...50T","ref_year":2016},{"parameter":"sed_flux","value":4.29e-05,"value_text":null,"unit":"Jy","err_plus":8.3e-06,"err_minus":8.3e-06,"band":"WISE:W2","method":"II/328/allwise","source":"vizier","reference":"II/328/allwise","ref_year":null},{"parameter":"sed_flux","value":6.28e-05,"value_text":null,"unit":"Jy","err_plus":4.7e-06,"err_minus":4.7e-06,"band":"WISE:W1","method":"II/328/allwise","source":"vizier","reference":"II/328/allwise","ref_year":null},{"parameter":"sed_flux","value":1.61e-05,"value_text":null,"unit":"Jy","err_plus":3e-06,"err_minus":3e-06,"band":"VISTA:J","method":"II/359/vhs_dr4","source":"vizier","reference":"II/359/vhs_dr4","ref_year":null},{"parameter":"sed_flux","value":3.86e-05,"value_text":null,"unit":"Jy","err_plus":2.8e-06,"err_minus":2.8e-06,"band":"CTIO/DECam:Y","method":"II/371/des_dr2","source":"vizier","reference":"II/371/des_dr2","ref_year":null},{"parameter":"sed_flux","value":3.57e-05,"value_text":null,"unit":"Jy","err_plus":8e-07,"err_minus":8e-07,"band":"CTIO/DECam:z","method":"II/371/des_dr2","source":"vizier","reference":"II/371/des_dr2","ref_year":null},{"parameter":"sed_flux","value":3.12e-05,"value_text":null,"unit":"Jy","err_plus":4e-07,"err_minus":4e-07,"band":"CTIO/DECam:i","method":"II/371/des_dr2","source":"vizier","reference":"II/371/des_dr2","ref_year":null},{"parameter":"sed_flux","value":2.51e-05,"value_text":null,"unit":"Jy","err_plus":2e-07,"err_minus":2e-07,"band":"CTIO/DECam:r","method":"II/371/des_dr2","source":"vizier","reference":"II/371/des_dr2","ref_year":null},{"parameter":"sed_flux","value":1.36e-05,"value_text":null,"unit":"Jy","err_plus":2e-07,"err_minus":2e-07,"band":"CTIO/DECam:g","method":"II/371/des_dr2","source":"vizier","reference":"II/371/des_dr2","ref_year":null},{"parameter":"sed_flux","value":2.43e-07,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"Johnson:I","method":"J/ApJ/699/1742/table8","source":"vizier","reference":"J/ApJ/699/1742/table8","ref_year":null},{"parameter":"sed_flux","value":2.59e-07,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"HST/ACS:F814W","method":"J/ApJ/699/1742/table8","source":"vizier","reference":"J/ApJ/699/1742/table8","ref_year":null},{"parameter":"sed_flux","value":2.54e-07,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"Johnson:V","method":"J/ApJ/699/1742/table8","source":"vizier","reference":"J/ApJ/699/1742/table8","ref_year":null},{"parameter":"sed_flux","value":2.26e-07,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"HST/ACS:F475W","method":"J/ApJ/699/1742/table8","source":"vizier","reference":"J/ApJ/699/1742/table8","ref_year":null},{"parameter":"sed_flux","value":2.21e-07,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"Johnson:B","method":"J/ApJ/699/1742/table8","source":"vizier","reference":"J/ApJ/699/1742/table8","ref_year":null},{"parameter":"sed_flux","value":1.29e-05,"value_text":null,"unit":"Jy","err_plus":1.4e-06,"err_minus":1.4e-06,"band":"Spitzer/IRAC:4.5","method":"J/ApJS/216/10/dustgsc","source":"vizier","reference":"J/ApJS/216/10/dustgsc","ref_year":null},{"parameter":"sed_flux","value":1.69e-05,"value_text":null,"unit":"Jy","err_plus":1.4e-06,"err_minus":1.4e-06,"band":"Spitzer/IRAC:3.6","method":"J/ApJS/216/10/dustgsc","source":"vizier","reference":"J/ApJS/216/10/dustgsc","ref_year":null},{"parameter":"sed_flux","value":1.2e-05,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"Cousins:I","method":"J/AJ/138/332/table1","source":"vizier","reference":"J/AJ/138/332/table1","ref_year":null},{"parameter":"sed_flux","value":0.00303,"value_text":null,"unit":"Jy","err_plus":0.00056,"err_minus":0.00056,"band":"Johnson:V","method":"J/AJ/144/4/catalog","source":"vizier","reference":"J/AJ/144/4/catalog","ref_year":null},{"parameter":"sed_flux","value":0.0174,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"2MASS:Ks","method":"J/AJ/145/101/catalog","source":"vizier","reference":"J/AJ/145/101/catalog","ref_year":null},{"parameter":"sed_flux","value":5.55e-06,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"GALEX:FUV","method":"J/AJ/145/101/catalog","source":"vizier","reference":"J/AJ/145/101/catalog","ref_year":null},{"parameter":"sed_flux","value":588.0,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"2MASS:Ks","method":"J/AJ/146/86/table1","source":"vizier","reference":"J/AJ/146/86/table1","ref_year":null},{"parameter":"sed_flux","value":0.000384,"value_text":null,"unit":"Jy","err_plus":0.000145,"err_minus":0.000145,"band":"POSS-II:F","method":"I/305/out","source":"vizier","reference":"I/305/out","ref_year":null},{"parameter":"sed_flux","value":0.00187,"value_text":null,"unit":"Jy","err_plus":0.00026,"err_minus":0.00026,"band":"POSS-II:J","method":"I/305/out","source":"vizier","reference":"I/305/out","ref_year":null},{"parameter":"sed_flux","value":1.63e-05,"value_text":null,"unit":"Jy","err_plus":3.1e-06,"err_minus":3.1e-06,"band":"2MASS:J","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":0.00218,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"WISE:W4","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":0.000201,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"WISE:W3","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":4.29e-05,"value_text":null,"unit":"Jy","err_plus":8.3e-06,"err_minus":8.3e-06,"band":"WISE:W2","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":6.28e-05,"value_text":null,"unit":"Jy","err_plus":4.7e-06,"err_minus":4.7e-06,"band":"WISE:W1","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":0.00218,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"WISE:W4","method":"II/328/allwise","source":"vizier","reference":"II/328/allwise","ref_year":null},{"parameter":"sed_flux","value":0.000201,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"WISE:W3","method":"II/328/allwise","source":"vizier","reference":"II/328/allwise","ref_year":null}],"orbit":null,"exoplanet":null,"sources":[{"source":"simbad","url":"https://simbad.cds.unistra.fr/simbad/sim-basic?Ident=Tuc Galaxy","fetched_at":"2026-09-11T04:53:23.960927+00:00"},{"source":"ned","url":"https://ned.ipac.caltech.edu/byname?objname=WISEA J224148.86-642510.3","fetched_at":"2026-09-11T04:53:25.412406+00:00"},{"source":"vizier","url":"https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-c=340.456667%20-64.419444&-c.rs=5","fetched_at":"2026-09-11T04:53:35.142836+00:00"}]}