{"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"object":{"des":"87","spkid":"20000087","neo":false,"orbit_class":{"name":"Outer Main-belt Asteroid","code":"OMB"},"shortname":"87 Sylvia","fullname":"87 Sylvia (A866 KA)","orbit_id":"130","prefix":null,"kind":"an","pha":false},"discovery":{"ref":"DISCOVERY.DB","location":"Madras","date":"1866-May-16","site":null,"cref":null,"citation":null,"discovery":"Discovered 1866-05-16 by Pogson, N. R. at Madras","name":null,"who":"Pogson, N. R."},"orbit":{"two_body":null,"equinox":"J2000","first_obs":"1885-05-05","elements":[{"sigma":"2.2e-09","value":"0.0942","label":"e","title":"eccentricity","units":null,"name":"e"},{"title":"semi-major axis","label":"a","units":"au","name":"a","sigma":"5.6e-09","value":"3.49"},{"value":"3.16","sigma":"4.9e-09","title":"perihelion distance","label":"q","name":"q","units":"au"},{"value":"10.8","sigma":"1.7e-07","units":"deg","name":"i","label":"i","title":"inclination; angle with respect to x-y ecliptic plane"},{"label":"node","title":"longitude of the ascending node","units":"deg","name":"om","value":"72.9","sigma":"6.1e-07"},{"label":"peri","title":"argument of perihelion","units":"deg","name":"w","sigma":"1.4e-06","value":"267"},{"value":"124","sigma":"1.8e-06","label":"M","title":"mean anomaly","name":"ma","units":"deg"},{"label":"tp","title":"time of perihelion passage","name":"tp","units":"TDB","sigma":"1e-05","value":"2460380.434"},{"title":"sidereal orbital period","label":"period","units":"d","name":"per","value":"2380","sigma":"5.8e-06"},{"title":"mean motion","label":"n","name":"n","units":"deg/d","value":"0.151","sigma":"3.7e-10"},{"value":"3.82","sigma":"6.2e-09","title":"aphelion distance","label":"Q","name":"ad","units":"au"}],"n_del_obs_used":null,"orbit_id":"130","last_obs":"2026-04-05","source":"JPL","soln_date":"2026-06-05 03:08:26","epoch":"2461200.5","producer":"Otto Matic","not_valid_before":null,"moid":"2.18","n_dop_obs_used":null,"rms":"0.33","sb_used":"SB441-N16","condition_code":"0","t_jup":"3.092","moid_jup":"1.57","n_obs_used":7387,"comment":null,"cov_epoch":"2458183.5","not_valid_after":null,"data_arc":"51469","pe_used":"DE441","model_pars":[]}}
