{"id":1734848,"slug":"rx-j121857-7-471558","name":"RX J121857.7+471558","domain":"deep-sky","class":"source","otype":"UX?","otype_label":"ULX Candidate","ra":184.74104166666666,"dec":47.26872222222222,"coo_err_mas":1000.0,"coo_bibcode":"2014MNRAS.442.1054H","plx_mas":null,"pmra":null,"pmdec":null,"rv_kms":null,"redshift":null,"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":13,"simbad_oid":609196,"gaia_dr3":null,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":0,"deep_at":null,"views":7,"first_seen":"2026-08-14T16:50:11.538209+00:00","updated_at":"2026-08-14T16:50:11.538209+00:00","identifiers":["2XMM J121857.8+471607","[CHP2004] J121857.8+471607","[CWD95] 6","CXOU J121857.8+471607","[FK2005] 11","[LB2005] NGC 4258 X3","[PVK94] 16","[RW2000] NGC 4258 X-7","RX J121857.7+471558","[SGT2004] J121857.84+471607.1","[SST2011] J121857.84+471607.1","[WMR2006] NGC4258 XMM2"],"measurements":[],"orbit":null,"exoplanet":null,"sources":[]}