{"id":2029911,"slug":"aco-3556","name":"ACO 3556","domain":"deep-sky","class":"galaxy-group","otype":"ClG","otype_label":"ClG","ra":201.02583333333334,"dec":-31.660555555555554,"coo_err_mas":null,"coo_bibcode":"2001ApJ...554L.129M","plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":14016.512,"redshift":0.0479,"dist_pc":null,"vmag":null,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":162,"simbad_oid":2145360,"gaia_dr3":null,"jpl_spkid":null,"ned_name":"ABELL 3556","exo_name":null,"host_object_id":null,"depth":1,"deep_at":"2026-09-26T14:18:10.274503+00:00","views":26,"first_seen":"2026-08-14T16:50:48.069180+00:00","updated_at":"2026-09-20T03:26:18.184858+00:00","identifiers":["ACO 3556","BAX 201.0260-31.6605","SC 1321-31.4"],"measurements":[{"parameter":"radial_velocity","value":0.048,"value_text":null,"unit":"km/s","err_plus":null,"err_minus":null,"band":null,"method":"z","source":"simbad","reference":"2001ApJ...554L.129M","ref_year":2001},{"parameter":"redshift","value":0.048019887144726,"value_text":null,"unit":null,"err_plus":0.000150103842839168,"err_minus":0.000150103842839168,"band":null,"method":null,"source":"ned","reference":"2018MNRAS.481.1055H","ref_year":2018},{"parameter":"sed_flux","value":0.000174,"value_text":null,"unit":"Jy","err_plus":4.2e-05,"err_minus":4.2e-05,"band":"POSS-II:J","method":"I/305/out","source":"vizier","reference":"I/305/out","ref_year":null},{"parameter":"sed_flux","value":0.00078,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"2MASS:Ks","method":"I/331/apop","source":"vizier","reference":"I/331/apop","ref_year":null},{"parameter":"sed_flux","value":0.00104,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"2MASS:H","method":"I/331/apop","source":"vizier","reference":"I/331/apop","ref_year":null},{"parameter":"sed_flux","value":0.00104,"value_text":null,"unit":"Jy","err_plus":null,"err_minus":null,"band":"2MASS:J","method":"I/331/apop","source":"vizier","reference":"I/331/apop","ref_year":null},{"parameter":"sed_flux","value":0.0007,"value_text":null,"unit":"Jy","err_plus":4.7e-05,"err_minus":4.7e-05,"band":"2MASS:Ks","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":0.000919,"value_text":null,"unit":"Jy","err_plus":3e-05,"err_minus":3e-05,"band":"2MASS:J","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":0.000805,"value_text":null,"unit":"Jy","err_plus":1.9e-05,"err_minus":1.9e-05,"band":"VISTA:Y","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":6.23e-05,"value_text":null,"unit":"Jy","err_plus":1.3e-06,"err_minus":1.3e-06,"band":"SDSS:i","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":4.07e-06,"value_text":null,"unit":"Jy","err_plus":1.93e-06,"err_minus":1.93e-06,"band":"GALEX:NUV","method":"I/353/gsc242","source":"vizier","reference":"I/353/gsc242","ref_year":null},{"parameter":"sed_flux","value":4.07e-06,"value_text":null,"unit":"Jy","err_plus":1.93e-06,"err_minus":1.93e-06,"band":"GALEX:NUV","method":"II/335/galex_ais","source":"vizier","reference":"II/335/galex_ais","ref_year":null},{"parameter":"sed_flux","value":6.22e-05,"value_text":null,"unit":"Jy","err_plus":1.3e-06,"err_minus":1.3e-06,"band":"PAN-STARRS/PS1:i","method":"II/349/ps1","source":"vizier","reference":"II/349/ps1","ref_year":null},{"parameter":"sed_flux","value":2.47e-05,"value_text":null,"unit":"Jy","err_plus":3.3e-06,"err_minus":3.3e-06,"band":"VISTA:Y","method":"II/359/vhs_dr4","source":"vizier","reference":"II/359/vhs_dr4","ref_year":null},{"parameter":"sed_flux","value":0.0007,"value_text":null,"unit":"Jy","err_plus":4.7e-05,"err_minus":4.7e-05,"band":"VISTA:Ks","method":"II/359/vhs_dr4","source":"vizier","reference":"II/359/vhs_dr4","ref_year":null},{"parameter":"sed_flux","value":0.000905,"value_text":null,"unit":"Jy","err_plus":2.9e-05,"err_minus":2.9e-05,"band":"VISTA:J","method":"II/359/vhs_dr4","source":"vizier","reference":"II/359/vhs_dr4","ref_year":null},{"parameter":"sed_flux","value":0.000235,"value_text":null,"unit":"Jy","err_plus":5e-06,"err_minus":5e-06,"band":"WISE:W2","method":"II/365/catwise","source":"vizier","reference":"II/365/catwise","ref_year":null},{"parameter":"sed_flux","value":0.000384,"value_text":null,"unit":"Jy","err_plus":7e-06,"err_minus":7e-06,"band":"WISE:W1","method":"II/365/catwise","source":"vizier","reference":"II/365/catwise","ref_year":null},{"parameter":"sed_flux","value":8.93e-05,"value_text":null,"unit":"Jy","err_plus":1.58e-05,"err_minus":1.58e-05,"band":"SkyMapper/SkyMapper:z","method":"II/379/smssdr4","source":"vizier","reference":"II/379/smssdr4","ref_year":null},{"parameter":"sed_flux","value":0.000148,"value_text":null,"unit":"Jy","err_plus":5e-06,"err_minus":5e-06,"band":"SkyMapper/SkyMapper:i","method":"II/379/smssdr4","source":"vizier","reference":"II/379/smssdr4","ref_year":null},{"parameter":"sed_flux","value":9.2e-05,"value_text":null,"unit":"Jy","err_plus":1.84e-05,"err_minus":1.84e-05,"band":"SkyMapper/SkyMapper:r","method":"II/379/smssdr4","source":"vizier","reference":"II/379/smssdr4","ref_year":null},{"parameter":"sed_flux","value":6.19e-05,"value_text":null,"unit":"Jy","err_plus":2.3e-06,"err_minus":2.3e-06,"band":"VISTA:Z","method":"II/385/vst_atlas4","source":"vizier","reference":"II/385/vst_atlas4","ref_year":null}],"orbit":null,"exoplanet":null,"sources":[{"source":"ned","url":"https://ned.ipac.caltech.edu/byname?objname=ABELL 3556","fetched_at":"2026-09-26T14:18:02.804545+00:00"},{"source":"simbad","url":"https://simbad.cds.unistra.fr/simbad/sim-basic?Ident=ACO 3556","fetched_at":"2026-09-26T14:18:01.787471+00:00"},{"source":"vizier","url":"https://vizier.cds.unistra.fr/viz-bin/VizieR-4?-c=201.025833%20-31.660556&-c.rs=5","fetched_at":"2026-09-26T14:18:10.265779+00:00"}]}