{"id":59714,"slug":"31689-sebmellen","name":"31689 Sebmellen","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":20031689,"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":["31689","31689 Sebmellen","31689 Sebmellen (1999 JW27)","Sebmellen"],"measurements":[],"orbit":{"object_id":59714,"epoch_jd":2461200.5,"a_au":3.102,"e":0.1387,"i_deg":2.07,"om_deg":84.01,"w_deg":184.66,"ma_deg":302.32,"q_au":2.672,"ad_au":3.53,"period_d":2000.0,"moid_au":1.66,"orbit_class":"MBA","neo":false,"pha":false,"h_mag":14.44,"diameter_km":7.296,"albedo":0.076,"rot_period_h":null,"spec_b":null,"spec_t":null,"condition_code":"0","n_obs":2477,"arc_days":11133,"first_obs":"1995-10-20","last_obs":"2026-04-13","producer":"Otto Matic","source":"jpl-sbdb","updated_at":"2026-08-14T17:22:17.097108+00:00"},"exoplanet":null,"sources":[]}