{"id":1634996,"slug":"gd-539","name":"GD 539","domain":"deep-sky","class":"star","otype":"WD*","otype_label":"WhiteDwarf","ra":299.58685148981,"dec":67.67363493273,"coo_err_mas":0.0323,"coo_bibcode":"2020yCat.1350....0G","plx_mas":5.8439,"pmra":57.814,"pmdec":97.867,"rv_kms":null,"redshift":null,"dist_pc":null,"vmag":null,"bmag":16.1,"gmag":16.250818,"jmag":null,"kmag":null,"sp_type":"DA2.1","morph_type":null,"size_maj":null,"size_min":null,"size_angle":null,"nbref":15,"simbad_oid":263910,"gaia_dr3":2249163257819170048,"jpl_spkid":null,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":0,"deep_at":null,"views":1,"first_seen":"2026-08-14T16:49:54.419452+00:00","updated_at":"2026-08-14T16:49:54.419452+00:00","identifiers":["EGGR 442","Gaia DR2 2249163257819170048","Gaia DR3 2249163257819170048","GD 539","UCAC4 789-030909","USNO-B1.0 1576-00237292","WD 1958+675"],"measurements":[],"orbit":null,"exoplanet":null,"sources":[]}