{"id":2146690,"slug":"aco-2254","name":"ACO 2254","domain":"deep-sky","class":"galaxy-group","otype":"ClG","otype_label":"ClG","ra":259.44125,"dec":19.673000000000002,"coo_err_mas":null,"coo_bibcode":"2006MNRAS.370..851P","plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":48279.957,"redshift":0.1764,"dist_pc":null,"vmag":null,"bmag":null,"gmag":null,"jmag":null,"kmag":null,"sp_type":null,"morph_type":null,"size_maj":15.333333,"size_min":15.333333,"size_angle":0.0,"nbref":81,"simbad_oid":2764092,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":1,"deep_at":"2026-09-22T00:39:04.525043+00:00","views":3,"first_seen":"2026-08-14T16:51:01.524842+00:00","updated_at":"2026-09-20T03:26:18.184858+00:00","identifiers":["1RXS J171739.1+194058","ACO 2254","BAX 259.4176+19.7143","MCXC J1717.8+1940","NSC J171741+194202","PSZ1 G041.46+29.10","PSZ2 G041.45+29.10","PSZRX G041.44+29.12","RXC J1717.8+1940","RXGCC 707","XCLASS 3041","ZwCl 8191"],"measurements":[{"parameter":"radial_velocity","value":0.1764,"value_text":null,"unit":"km/s","err_plus":0.005,"err_minus":0.005,"band":null,"method":"z","source":"simbad","reference":"2022A&A...658A..59X","ref_year":2022},{"parameter":"radial_velocity","value":0.176,"value_text":null,"unit":"km/s","err_plus":null,"err_minus":null,"band":null,"method":"z","source":"simbad","reference":"2021A&A...652A..12K","ref_year":2021},{"parameter":"radial_velocity","value":0.178,"value_text":null,"unit":"km/s","err_plus":null,"err_minus":null,"band":null,"method":"z","source":"simbad","reference":"2000ApJS..129..435B","ref_year":2000},{"parameter":"radial_velocity","value":0.178,"value_text":null,"unit":"km/s","err_plus":null,"err_minus":null,"band":null,"method":"z","source":"simbad","reference":"1996MNRAS.281..799E","ref_year":1996}],"orbit":null,"exoplanet":null,"sources":[{"source":"simbad","url":"https://simbad.cds.unistra.fr/simbad/sim-basic?Ident=ACO 2254","fetched_at":"2026-09-22T00:39:04.523962+00:00"}]}