{"object":{"des":"884","shortname":"884 Priamus","neo":false,"spkid":"20000884","orbit_class":{"code":"TJN","name":"Jupiter Trojan"},"fullname":"884 Priamus (A917 SU)","orbit_id":"77","kind":"an","pha":false,"prefix":null},"discovery":{"discovery":"Discovered 1917-09-22 by Wolf, M. at Heidelberg","site":null,"date":"1917-Sep-22","citation":null,"name":null,"ref":"DISCOVERY.DB","who":"Wolf, M.","location":"Heidelberg","cref":null},"orbit":{"n_obs_used":6575,"two_body":null,"equinox":"J2000","source":"JPL","moid":"3.55","n_dop_obs_used":null,"not_valid_before":null,"t_jup":"2.961","last_obs":"2026-04-02","cov_epoch":"2458763.5","data_arc":"39592","model_pars":[],"rms":"0.31","not_valid_after":null,"sb_used":"SB441-N16","pe_used":"DE441","epoch":"2461200.5","first_obs":"1917-11-08","elements":[{"value":"0.123","title":"eccentricity","name":"e","sigma":"3.4e-09","units":null,"label":"e"},{"value":"5.21","title":"semi-major axis","name":"a","sigma":"2.3e-08","units":"au","label":"a"},{"title":"perihelion distance","name":"q","value":"4.57","label":"q","units":"au","sigma":"3.5e-08"},{"value":"8.9","title":"inclination; angle with respect to x-y ecliptic plane","name":"i","label":"i","sigma":"8.3e-08","units":"deg"},{"units":"deg","sigma":"3.5e-07","label":"node","name":"om","title":"longitude of the ascending node","value":"301"},{"units":"deg","sigma":"2.2e-06","label":"peri","name":"w","title":"argument of perihelion","value":"337"},{"label":"M","units":"deg","sigma":"9.7e-07","name":"ma","title":"mean anomaly","value":"146"},{"title":"time of perihelion passage","name":"tp","value":"2459434.668","units":"TDB","sigma":"1.8e-05","label":"tp"},{"title":"sidereal orbital period","name":"per","value":"4340","units":"d","sigma":"2.8e-05","label":"period"},{"name":"n","title":"mean motion","value":"0.0829","units":"deg/d","sigma":"5.4e-10","label":"n"},{"label":"Q","units":"au","sigma":"2.6e-08","name":"ad","title":"aphelion distance","value":"5.85"}],"condition_code":"0","comment":null,"moid_jup":"0.464","n_del_obs_used":null,"soln_date":"2026-06-05 04:10:12","orbit_id":"77","producer":"Otto Matic"},"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"}}