{"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"orbit":{"first_obs":"1991-06-08","elements":[{"name":"e","value":"0.0858","label":"e","sigma":"1.7e-09","title":"eccentricity","units":null},{"label":"a","name":"a","value":"3.63","sigma":"6.4e-09","units":"au","title":"semi-major axis"},{"value":"3.32","name":"q","label":"q","sigma":"1.1e-08","title":"perihelion distance","units":"au"},{"label":"i","value":"4.42","name":"i","title":"inclination; angle with respect to x-y ecliptic plane","sigma":"8.7e-08","units":"deg"},{"name":"om","value":"117","label":"node","sigma":"1.4e-06","title":"longitude of the ascending node","units":"deg"},{"name":"w","value":"249","label":"peri","sigma":"2.1e-06","title":"argument of perihelion","units":"deg"},{"sigma":"7.5e-07","title":"mean anomaly","units":"deg","value":"351","name":"ma","label":"M"},{"sigma":"5.2e-06","title":"time of perihelion passage","units":"TDB","label":"tp","name":"tp","value":"2461263.729"},{"name":"per","value":"2520","label":"period","sigma":"6.7e-06","title":"sidereal orbital period","units":"d"},{"units":"deg/d","sigma":"3.8e-10","title":"mean motion","name":"n","value":"0.143","label":"n"},{"units":"au","sigma":"6.9e-09","title":"aphelion distance","label":"Q","value":"3.94","name":"ad"}],"pe_used":"DE441","orbit_id":"158","model_pars":[],"two_body":null,"moid_jup":"1.51","rms":"0.34","comment":null,"condition_code":"0","n_dop_obs_used":null,"producer":"Otto Matic","cov_epoch":"2457883.5","n_del_obs_used":null,"source":"JPL","last_obs":"2025-12-15","epoch":"2461200.5","not_valid_before":null,"sb_used":"SB441-N16","soln_date":"2026-06-05 03:42:37","moid":"2.32","not_valid_after":null,"data_arc":"12609","equinox":"J2000","n_obs_used":6562,"t_jup":"3.093"},"discovery":{"who":"Wolf, M.","ref":"DISCOVERY.DB","discovery":"Discovered 1904-01-10 by Wolf, M. at Heidelberg","date":"1904-Jan-10","location":"Heidelberg","site":null,"cref":null,"name":null,"citation":null},"object":{"neo":false,"fullname":"522 Helga (A904 AF)","orbit_id":"158","spkid":"20000522","shortname":"522 Helga","prefix":null,"orbit_class":{"name":"Outer Main-belt Asteroid","code":"OMB"},"pha":false,"des":"522","kind":"an"}}