{"id":56146,"slug":"28121","name":"28121","domain":"solar-system","class":"asteroid","otype":null,"otype_label":"Asteroid","ra":null,"dec":null,"coo_err_mas":null,"coo_bibcode":null,"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":0,"simbad_oid":null,"gaia_dr3":null,"jpl_spkid":20028121,"ned_name":null,"exo_name":null,"host_object_id":null,"depth":0,"deep_at":null,"views":1,"first_seen":"2026-08-14T16:44:29.897360+00:00","updated_at":"2026-08-14T17:22:17.097108+00:00","identifiers":["28121","28121 (1998 SY72)"],"measurements":[],"orbit":{"object_id":56146,"epoch_jd":2461200.5,"a_au":2.231,"e":0.0559,"i_deg":6.36,"om_deg":176.27,"w_deg":32.36,"ma_deg":283.81,"q_au":2.107,"ad_au":2.36,"period_d":1220.0,"moid_au":1.11,"orbit_class":"MBA","neo":false,"pha":false,"h_mag":14.97,"diameter_km":2.328,"albedo":0.566,"rot_period_h":null,"spec_b":null,"spec_t":null,"condition_code":"0","n_obs":3694,"arc_days":13182,"first_obs":"1990-03-02","last_obs":"2026-04-04","producer":"Otto Matic","source":"jpl-sbdb","updated_at":"2026-08-14T17:22:17.097108+00:00"},"exoplanet":null,"sources":[]}