{"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"object":{"shortname":"168 Sibylla","des":"168","fullname":"168 Sibylla (A876 SA)","neo":false,"orbit_class":{"code":"OMB","name":"Outer Main-belt Asteroid"},"pha":false,"orbit_id":"88","prefix":null,"kind":"an","spkid":"20000168"},"orbit":{"n_dop_obs_used":null,"n_obs_used":13098,"t_jup":"3.144","elements":[{"title":"eccentricity","value":"0.0742","label":"e","units":null,"sigma":"2.5e-09","name":"e"},{"title":"semi-major axis","value":"3.37","units":"au","label":"a","name":"a","sigma":"5.4e-09"},{"title":"perihelion distance","value":"3.12","name":"q","sigma":"1.2e-08","label":"q","units":"au"},{"value":"4.67","title":"inclination; angle with respect to x-y ecliptic plane","label":"i","units":"deg","sigma":"1.5e-07","name":"i"},{"title":"longitude of the ascending node","value":"206","sigma":"1.9e-06","name":"om","units":"deg","label":"node"},{"label":"peri","units":"deg","name":"w","sigma":"2.3e-06","value":"177","title":"argument of perihelion"},{"value":"21.1","title":"mean anomaly","units":"deg","label":"M","name":"ma","sigma":"1.3e-06"},{"title":"time of perihelion passage","value":"2461068.186","label":"tp","units":"TDB","sigma":"7.8e-06","name":"tp"},{"value":"2260","title":"sidereal orbital period","label":"period","units":"d","name":"per","sigma":"5.5e-06"},{"value":"0.159","title":"mean motion","units":"deg/d","label":"n","sigma":"3.9e-10","name":"n"},{"value":"3.62","title":"aphelion distance","sigma":"5.8e-09","name":"ad","label":"Q","units":"au"}],"last_obs":"2026-02-26","pe_used":"DE441","source":"JPL","moid":"2.12","data_arc":"54556","orbit_id":"88","sb_used":"SB441-N16","moid_jup":"1.82","not_valid_before":null,"epoch":"2461200.5","equinox":"J2000","model_pars":[],"first_obs":"1876-10-14","not_valid_after":null,"two_body":null,"soln_date":"2026-06-05 03:13:55","condition_code":"0","comment":null,"producer":"Otto Matic","n_del_obs_used":null,"cov_epoch":"2457780.5","rms":"0.24"},"discovery":{"location":"Ann Arbor","who":"Watson, J. C.","citation":null,"ref":"DISCOVERY.DB","site":null,"cref":null,"name":null,"discovery":"Discovered 1876-09-28 by Watson, J. C. at Ann Arbor","date":"1876-Sep-28"}}