{"orbit":{"not_valid_after":null,"sb_used":"SB431-N16","moid_jup":"0.181","condition_code":"1","rms":"0.71","equinox":"J2000","n_obs_used":667,"n_dop_obs_used":null,"first_obs":"1999-11-13","moid":"1.1","epoch":"2457467.5","cov_epoch":"2457467.5","t_jup":"3.009","comment":null,"n_del_obs_used":null,"soln_date":"2020-09-28 09:20:31","elements":[{"label":"e","units":null,"title":"eccentricity","value":"0.389","name":"e","sigma":"5.1e-07"},{"label":"a","title":"semi-major axis","units":"au","value":"3.44","name":"a","sigma":"2.8e-07"},{"title":"perihelion distance","units":"au","label":"q","value":"2.1","sigma":"1.7e-06","name":"q"},{"sigma":"2.7e-05","name":"i","value":"2.6","title":"inclination; angle with respect to x-y ecliptic plane","units":"deg","label":"i"},{"label":"node","title":"longitude of the ascending node","units":"deg","value":"182","name":"om","sigma":"0.00031"},{"value":"24.8","sigma":"0.00067","name":"w","title":"argument of perihelion","units":"deg","label":"peri"},{"name":"ma","sigma":"0.00025","value":"127","label":"M","title":"mean anomaly","units":"deg"},{"name":"tp","sigma":"0.0016","value":"2456646.401","label":"tp","units":"TDB","title":"time of perihelion passage"},{"name":"per","sigma":"0.00029","value":"2330","label":"period","units":"d","title":"sidereal orbital period"},{"units":"deg/d","title":"mean motion","label":"n","sigma":"1.9e-08","name":"n","value":"0.154"},{"label":"Q","units":"au","title":"aphelion distance","name":"ad","sigma":"3.9e-07","value":"4.78"}],"two_body":null,"not_valid_before":null,"orbit_id":"K203/18","source":"JPL","producer":"Davide Farnocchia","data_arc":"7602","model_pars":[{"kind":"EST","title":"non-grav. radial accel.","units":"au/d^2","n":1,"name":"A1","sigma":"1.286E-9","value":"1.256e-08","desc":"non-gravitational radial acceleration parameter"},{"kind":"EST","units":"au/d^2","title":"non-grav. transverse accel.","n":2,"name":"A2","sigma":"4.033E-11","desc":"non-gravitational transverse acceleration parameter","value":"-2.017e-09"},{"value":"5.855e-09","desc":"non-gravitational normal acceleration parameter","name":"A3","sigma":"2.393E-10","n":3,"kind":"EST","units":"au/d^2","title":"non-grav. normal accel."}],"last_obs":"2020-09-05","pe_used":"DE431"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"discovery":{"citation":null,"discovery":"Discovered 1981-03-02 by Bus, Schelte J. at U. K. Schmidt Telescope Unit, Siding Spring","name":null,"location":"U. K. Schmidt Telescope Unit, Siding Spring","date":"1981-Mar-02","who":"Bus, Schelte J.","site":null,"cref":null,"ref":"comet.dis"},"object":{"spkid":"1000010","kind":"cn","prefix":"P","neo":false,"orbit_id":"K203/18","orbit_class":{"code":"ETc","name":"Encke-type Comet"},"des":"87P","pha":false,"fullname":"87P/Bus"}}