{"object":{"pha":false,"prefix":null,"kind":"an","fullname":"536 Merapi (A904 JF)","orbit_id":"144","orbit_class":{"code":"OMB","name":"Outer Main-belt Asteroid"},"shortname":"536 Merapi","des":"536","spkid":"20000536","neo":false},"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"orbit":{"rms":"0.29","n_dop_obs_used":null,"moid":"2.24","not_valid_before":null,"producer":"Otto Matic","epoch":"2461200.5","soln_date":"2026-06-05 03:43:45","last_obs":"2026-04-06","source":"JPL","orbit_id":"144","n_del_obs_used":null,"equinox":"J2000","elements":[{"sigma":"2.5e-09","value":"0.091","title":"eccentricity","label":"e","name":"e","units":null},{"value":"3.51","sigma":"5.8e-09","units":"au","name":"a","label":"a","title":"semi-major axis"},{"sigma":"5.5e-09","value":"3.19","title":"perihelion distance","label":"q","name":"q","units":"au"},{"value":"19.4","sigma":"1.7e-07","units":"deg","name":"i","title":"inclination; angle with respect to x-y ecliptic plane","label":"i"},{"sigma":"3.8e-07","value":"59","name":"om","units":"deg","title":"longitude of the ascending node","label":"node"},{"title":"argument of perihelion","label":"peri","units":"deg","name":"w","sigma":"1e-06","value":"298"},{"title":"mean anomaly","label":"M","name":"ma","units":"deg","value":"122","sigma":"1.4e-06"},{"value":"2460385.806","sigma":"8.2e-06","label":"tp","title":"time of perihelion passage","units":"TDB","name":"tp"},{"value":"2400","sigma":"5.9e-06","title":"sidereal orbital period","label":"period","units":"d","name":"per"},{"title":"mean motion","label":"n","units":"deg/d","name":"n","sigma":"3.7e-10","value":"0.15"},{"label":"Q","title":"aphelion distance","name":"ad","units":"au","value":"3.83","sigma":"6.3e-09"}],"first_obs":"1904-05-13","two_body":null,"model_pars":[],"pe_used":"DE441","data_arc":"44523","cov_epoch":"2457633.5","not_valid_after":null,"n_obs_used":6827,"comment":null,"moid_jup":"1.69","t_jup":"3.027","condition_code":"0","sb_used":"SB441-N16"},"discovery":{"name":null,"who":"Peters, G. H.","discovery":"Discovered 1904-05-11 by Peters, G. H. at Washington","site":null,"cref":null,"citation":null,"date":"1904-May-11","ref":"DISCOVERY.DB","location":"Washington"}}
