{"discovery":{"date":"1878-Mar-01","discovery":"Discovered 1878-03-01 by Peters, C. H. F. at Clinton","name":null,"site":null,"cref":null,"citation":null,"ref":"DISCOVERY.DB","location":"Clinton","who":"Peters, C. H. F."},"object":{"kind":"an","prefix":null,"orbit_class":{"code":"MBA","name":"Main-belt Asteroid"},"neo":false,"pha":false,"orbit_id":"129","spkid":"20000185","shortname":"185 Eunike","des":"185","fullname":"185 Eunike (A878 EA)"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"orbit":{"first_obs":"1880-09-11","model_pars":[],"equinox":"J2000","epoch":"2461200.5","not_valid_before":null,"moid_jup":"2.41","sb_used":"SB441-N16","data_arc":"53102","orbit_id":"129","moid":"1.42","source":"JPL","last_obs":"2026-01-31","pe_used":"DE441","elements":[{"units":null,"label":"e","sigma":"2.4e-09","name":"e","value":"0.127","title":"eccentricity"},{"value":"2.74","title":"semi-major axis","label":"a","units":"au","sigma":"2.8e-09","name":"a"},{"label":"q","units":"au","name":"q","sigma":"5.8e-09","value":"2.39","title":"perihelion distance"},{"units":"deg","label":"i","name":"i","sigma":"1.7e-07","value":"23.3","title":"inclination; angle with respect to x-y ecliptic plane"},{"value":"154","title":"longitude of the ascending node","label":"node","units":"deg","name":"om","sigma":"5.6e-07"},{"title":"argument of perihelion","value":"224","name":"w","sigma":"1.1e-06","units":"deg","label":"peri"},{"value":"30.4","title":"mean anomaly","units":"deg","label":"M","sigma":"1.6e-06","name":"ma"},{"title":"time of perihelion passage","value":"2461060.633","sigma":"7e-06","name":"tp","label":"tp","units":"TDB"},{"value":"1650","title":"sidereal orbital period","label":"period","units":"d","name":"per","sigma":"2.5e-06"},{"value":"0.218","title":"mean motion","sigma":"3.3e-10","name":"n","units":"deg/d","label":"n"},{"units":"au","label":"Q","name":"ad","sigma":"3.1e-09","title":"aphelion distance","value":"3.09"}],"t_jup":"3.223","n_obs_used":5881,"n_dop_obs_used":null,"rms":"0.37","cov_epoch":"2457762.5","n_del_obs_used":null,"producer":"Otto Matic","comment":null,"condition_code":"0","soln_date":"2026-06-05 03:15:40","not_valid_after":null,"two_body":null}}
