{"id":53188,"slug":"25163-williammcdonald","name":"25163 Williammcdonald","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":20025163,"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":["25163","25163 Williammcdonald","25163 Williammcdonald (1998 SC60)","Williammcdonald"],"measurements":[],"orbit":{"object_id":53188,"epoch_jd":2461200.5,"a_au":3.171,"e":0.0333,"i_deg":9.58,"om_deg":30.64,"w_deg":155.1,"ma_deg":147.49,"q_au":3.065,"ad_au":3.28,"period_d":2060.0,"moid_au":2.07,"orbit_class":"MBA","neo":false,"pha":false,"h_mag":13.88,"diameter_km":null,"albedo":null,"rot_period_h":34.3,"spec_b":null,"spec_t":null,"condition_code":"0","n_obs":2612,"arc_days":13336,"first_obs":"1989-01-10","last_obs":"2025-07-16","producer":"Otto Matic","source":"jpl-sbdb","updated_at":"2026-08-14T17:22:17.097108+00:00"},"exoplanet":null,"sources":[]}