{"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"object":{"pha":false,"kind":"cn","prefix":"P","fullname":"109P/Swift-Tuttle","orbit_id":"32","orbit_class":{"code":"HTC","name":"Halley-type Comet*"},"spkid":"1000140","des":"109P","neo":true},"discovery":{"date":"1862-Jul-16","location":"Marathon, New York","ref":"comet.dis","discovery":"Discovered 1862-07-16 by Swift, Lewis at Marathon, New York","name":null,"who":"Swift, Lewis","cref":null,"site":null,"citation":null},"orbit":{"epoch":"2450000.5","producer":"M.S.W. Keesey","not_valid_before":null,"soln_date":"2001-10-09 15:34:49","n_dop_obs_used":null,"rms":"1.2","moid":"0.000892","equinox":"J2000","first_obs":"1737-07-08","elements":[{"value":"0.963","sigma":"6.8e-09","units":null,"name":"e","label":"e","title":"eccentricity"},{"sigma":"8.2e-07","value":"26.1","name":"a","units":"au","title":"semi-major axis","label":"a"},{"sigma":"1.8e-07","value":"0.96","title":"perihelion distance","label":"q","name":"q","units":"au"},{"units":"deg","name":"i","label":"i","title":"inclination; angle with respect to x-y ecliptic plane","sigma":"2.2e-05","value":"113"},{"units":"deg","name":"om","title":"longitude of the ascending node","label":"node","sigma":"2.8e-05","value":"139"},{"value":"153","sigma":"3.3e-05","name":"w","units":"deg","title":"argument of perihelion","label":"peri"},{"value":"7.63","sigma":"3.1e-07","label":"M","title":"mean anomaly","name":"ma","units":"deg"},{"name":"tp","units":"TDB","label":"tp","title":"time of perihelion passage","value":"2448968.500","sigma":"2.9e-05"},{"label":"period","title":"sidereal orbital period","name":"per","units":"d","sigma":"0.0023","value":"48700"},{"units":"deg/d","name":"n","label":"n","title":"mean motion","value":"0.0074","sigma":"3.5e-10"},{"sigma":"1.6e-06","value":"51.2","name":"ad","units":"au","title":"aphelion distance","label":"Q"}],"n_del_obs_used":null,"two_body":null,"orbit_id":"32","last_obs":"1995-03-29","source":"JPL","n_obs_used":652,"comment":null,"moid_jup":null,"pe_used":"DE405","model_pars":[],"cov_epoch":"2450000.5","not_valid_after":null,"data_arc":"94131","sb_used":"SB405-CPV-2","condition_code":"0","t_jup":"-0.280"}}
