{"orbit":{"n_dop_obs_used":null,"rms":"0.34","moid":"1.11","producer":"Otto Matic","epoch":"2461200.5","not_valid_before":null,"soln_date":"2026-03-11 21:17:32","orbit_id":"133","last_obs":"2025-10-19","source":"JPL","equinox":"J2000","first_obs":"1863-04-10","elements":[{"label":"e","title":"eccentricity","units":null,"name":"e","sigma":"1.8e-09","value":"0.204"},{"units":"au","name":"a","title":"semi-major axis","label":"a","sigma":"2.2e-09","value":"2.62"},{"value":"2.09","sigma":"4.9e-09","label":"q","title":"perihelion distance","units":"au","name":"q"},{"value":"8.68","sigma":"2e-07","label":"i","title":"inclination; angle with respect to x-y ecliptic plane","name":"i","units":"deg"},{"label":"node","title":"longitude of the ascending node","name":"om","units":"deg","sigma":"1.3e-06","value":"333"},{"sigma":"1.6e-06","value":"153","label":"peri","title":"argument of perihelion","name":"w","units":"deg"},{"sigma":"1.6e-06","value":"201","name":"ma","units":"deg","label":"M","title":"mean anomaly"},{"value":"2461883.806","sigma":"7.7e-06","title":"time of perihelion passage","label":"tp","units":"TDB","name":"tp"},{"title":"sidereal orbital period","label":"period","name":"per","units":"d","value":"1550","sigma":"2e-06"},{"value":"0.232","sigma":"3e-10","units":"deg/d","name":"n","label":"n","title":"mean motion"},{"sigma":"2.7e-09","value":"3.16","title":"aphelion distance","label":"Q","units":"au","name":"ad"}],"n_del_obs_used":null,"two_body":null,"pe_used":"DE441","model_pars":[],"cov_epoch":"2457396.5","not_valid_after":null,"data_arc":"59362","n_obs_used":6349,"comment":null,"moid_jup":"1.92","condition_code":"0","t_jup":"3.358","sb_used":"SB441-N16"},"discovery":{"location":"Dusseldorf","ref":"DISCOVERY.DB","date":"1863-Mar-15","citation":null,"cref":null,"site":null,"discovery":"Discovered 1863-03-15 by Luther, R. at Dusseldorf","who":"Luther, R.","name":null},"object":{"prefix":null,"kind":"an","pha":false,"orbit_class":{"code":"MBA","name":"Main-belt Asteroid"},"shortname":"78 Diana","fullname":"78 Diana (A863 EA)","orbit_id":"133","spkid":"20000078","des":"78","neo":false},"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"}}