{"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"object":{"pha":false,"orbit_id":"17","orbit_class":{"name":"Centaur","code":"CEN"},"neo":false,"kind":"an","prefix":null,"spkid":"20055576","shortname":"55576 Amycus","fullname":"55576 Amycus (2002 GB10)","des":"55576"},"orbit":{"not_valid_before":null,"moid_jup":"9.88","model_pars":[],"first_obs":"1987-11-24","epoch":"2461200.5","equinox":"J2000","moid":"14.2","source":"JPL","orbit_id":"17","data_arc":"13788","sb_used":"SB441-N16","elements":[{"value":"0.393","title":"eccentricity","units":null,"label":"e","name":"e","sigma":"1.3e-06"},{"title":"semi-major axis","value":"24.9","units":"au","label":"a","name":"a","sigma":"7.1e-05"},{"title":"perihelion distance","value":"15.1","name":"q","sigma":"1.2e-05","label":"q","units":"au"},{"units":"deg","label":"i","sigma":"1.8e-05","name":"i","title":"inclination; angle with respect to x-y ecliptic plane","value":"13.4"},{"title":"longitude of the ascending node","value":"316","units":"deg","label":"node","sigma":"3.9e-05","name":"om"},{"value":"239","title":"argument of perihelion","sigma":"0.00019","name":"w","label":"peri","units":"deg"},{"sigma":"0.00036","name":"ma","label":"M","units":"deg","title":"mean anomaly","value":"67.7"},{"label":"tp","units":"TDB","name":"tp","sigma":"0.0098","title":"time of perihelion passage","value":"2452647.335"},{"title":"sidereal orbital period","value":"45500","name":"per","sigma":"0.19","units":"d","label":"period"},{"title":"mean motion","value":"0.00791","label":"n","units":"deg/d","name":"n","sigma":"3.4e-08"},{"sigma":"9.8e-05","name":"ad","label":"Q","units":"au","title":"aphelion distance","value":"34.7"}],"last_obs":"2025-08-24","pe_used":"DE441","n_dop_obs_used":null,"n_obs_used":158,"t_jup":"4.126","cov_epoch":"2458896.5","rms":"0.64","producer":"Otto Matic","comment":null,"n_del_obs_used":null,"two_body":null,"not_valid_after":null,"soln_date":"2026-08-20 09:29:53","condition_code":"1"},"discovery":{"date":"2002-Apr-08","name":"Amycus","discovery":"Discovered 2002 Apr. 8 by the NEAT at Palomar.","ref":"20030216/Numbers.arc","citation":"Amycus was the first centaur to engage in battle with the Lapiths after Eurytus was killed for raping Peirithous' bride Hippodamia. He began the battle by smashing the face of the Celadon with a candelabrum stripped from the inmost wedding shrine.  Pelates of Pella killed Amycus by stabbing him with a table leg from a maple tree.","cref":"20051215/MPCPages.arc","site":null,"location":"Palomar","who":"NEAT"}}