{"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"orbit":{"soln_date":"2026-06-05 03:40:04","producer":"Otto Matic","orbit_id":"151","n_del_obs_used":null,"comment":null,"moid_jup":"1.66","elements":[{"label":"e","sigma":"1.9e-09","units":null,"value":"0.0491","name":"e","title":"eccentricity"},{"sigma":"3.3e-09","units":"au","label":"a","value":"3.15","title":"semi-major axis","name":"a"},{"name":"q","title":"perihelion distance","value":"3","units":"au","sigma":"4.1e-09","label":"q"},{"label":"i","sigma":"8.3e-08","units":"deg","value":"13","title":"inclination; angle with respect to x-y ecliptic plane","name":"i"},{"units":"deg","sigma":"4.3e-07","label":"node","name":"om","title":"longitude of the ascending node","value":"167"},{"label":"peri","sigma":"1.8e-06","units":"deg","value":"8.27","name":"w","title":"argument of perihelion"},{"value":"200","title":"mean anomaly","name":"ma","sigma":"1.7e-06","units":"deg","label":"M"},{"units":"TDB","sigma":"1e-05","label":"tp","title":"time of perihelion passage","name":"tp","value":"2462106.229"},{"label":"period","sigma":"3.2e-06","units":"d","value":"2040","title":"sidereal orbital period","name":"per"},{"value":"0.176","title":"mean motion","name":"n","sigma":"2.8e-10","units":"deg/d","label":"n"},{"units":"au","sigma":"3.5e-09","label":"Q","title":"aphelion distance","name":"ad","value":"3.31"}],"condition_code":"0","rms":"0.27","not_valid_after":null,"first_obs":"1902-09-03","sb_used":"SB441-N16","pe_used":"DE441","epoch":"2461200.5","source":"JPL","moid":"2","equinox":"J2000","two_body":null,"n_obs_used":9585,"cov_epoch":"2457315.5","data_arc":"45046","model_pars":[],"t_jup":"3.166","last_obs":"2026-01-01","not_valid_before":null,"n_dop_obs_used":null},"discovery":{"discovery":"Discovered 1902-09-02 by Carnera, L. at Heidelberg","site":null,"date":"1902-Sep-02","citation":null,"name":null,"ref":"DISCOVERY.DB","who":"Carnera, L.","location":"Heidelberg","cref":null},"object":{"des":"489","shortname":"489 Comacina","neo":false,"spkid":"20000489","fullname":"489 Comacina (A902 RD)","orbit_class":{"name":"Main-belt Asteroid","code":"MBA"},"pha":false,"prefix":null,"orbit_id":"151","kind":"an"}}