{"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"discovery":{"name":null,"cref":null,"discovery":"Discovered 1909-10-16 by Metcalf, J. H. at Taunton","who":"Metcalf, J. H.","date":"1909-Oct-16","ref":"DISCOVERY.DB","site":null,"citation":null,"location":"Taunton"},"object":{"shortname":"690 Wratislavia","pha":false,"spkid":"20000690","prefix":null,"des":"690","neo":false,"fullname":"690 Wratislavia (A909 UE)","orbit_class":{"code":"MBA","name":"Main-belt Asteroid"},"kind":"an","orbit_id":"84"},"orbit":{"epoch":"2461200.5","equinox":"J2000","n_dop_obs_used":null,"data_arc":"45064","condition_code":"0","elements":[{"sigma":"1.7e-09","name":"e","value":"0.176","title":"eccentricity","label":"e","units":null},{"label":"a","units":"au","sigma":"4.1e-09","title":"semi-major axis","value":"3.15","name":"a"},{"sigma":"7.1e-09","title":"perihelion distance","value":"2.6","name":"q","label":"q","units":"au"},{"label":"i","units":"deg","sigma":"1.3e-07","title":"inclination; angle with respect to x-y ecliptic plane","name":"i","value":"11.2"},{"title":"longitude of the ascending node","name":"om","value":"253","sigma":"6e-07","units":"deg","label":"node"},{"units":"deg","label":"peri","value":"115","name":"w","title":"argument of perihelion","sigma":"9.7e-07"},{"sigma":"1.8e-06","value":"329","name":"ma","title":"mean anomaly","label":"M","units":"deg"},{"sigma":"1e-05","title":"time of perihelion passage","name":"tp","value":"2461379.348","label":"tp","units":"TDB"},{"label":"period","units":"d","sigma":"4e-06","title":"sidereal orbital period","name":"per","value":"2040"},{"label":"n","units":"deg/d","sigma":"3.5e-10","title":"mean motion","name":"n","value":"0.176"},{"label":"Q","units":"au","sigma":"4.9e-09","name":"ad","value":"3.71","title":"aphelion distance"}],"n_del_obs_used":null,"soln_date":"2026-06-05 03:55:45","comment":null,"moid_jup":"1.92","not_valid_before":null,"t_jup":"3.154","sb_used":"SB441-N16","rms":"0.23","model_pars":[],"cov_epoch":"2457296.5","last_obs":"2025-10-19","not_valid_after":null,"producer":"Otto Matic","source":"JPL","two_body":null,"first_obs":"1902-06-03","n_obs_used":10350,"orbit_id":"84","pe_used":"DE441","moid":"1.62"}}