{"orbit":{"rms":".38596","not_valid_after":null,"source":"JPL","orbit_id":"51","producer":"Otto Matic","elements":[{"sigma":"3.7251E-5","value":".8598824585187618","units":null,"label":"e","name":"e","title":"eccentricity"},{"units":"au","value":"543.7195289104732","sigma":".1459","title":"semi-major axis","name":"a","label":"a"},{"label":"q","name":"q","title":"perihelion distance","sigma":".0011033","value":"76.18464364627253","units":"au"},{"units":"deg","value":"11.92527582847476","sigma":"3.3169E-6","title":"inclination; angle with respect to x-y ecliptic plane","name":"i","label":"i"},{"sigma":".00026058","value":"144.5061662673739","units":"deg","label":"node","name":"om","title":"longitude of the ascending node"},{"title":"argument of perihelion","label":"peri","name":"w","units":"deg","sigma":".0019143","value":"311.0987725939751"},{"name":"ma","label":"M","title":"mean anomaly","value":"358.5956944005428","sigma":".0005731","units":"deg"},{"label":"tp","name":"tp","title":"time of perihelion passage","sigma":".71422","value":"2479264.750687138669","units":"TDB"},{"label":"period","name":"per","title":"sidereal orbital period","sigma":"1864.","value":"4630851.183590915","units":"d"},{"units":"deg/d","value":"7.773948799642578E-5","sigma":"3.1292E-8","title":"mean motion","name":"n","label":"n"},{"title":"aphelion distance","label":"Q","name":"ad","units":"au","sigma":".27137","value":"1011.254414174674"}],"cov_epoch":"2458411.5","first_obs":"1990-09-25","epoch":"2461200.5","moid_jup":"71.0876","n_obs_used":671,"two_body":null,"pe_used":"DE441","t_jup":"10.221","soln_date":"2026-06-06 14:12:24","comment":null,"model_pars":[],"data_arc":"12939","n_dop_obs_used":null,"equinox":"J2000","sb_used":"SB441-N16","not_valid_before":null,"moid":"75.2131","condition_code":"1","n_del_obs_used":null,"last_obs":"2026-02-27"},"phys_par":[{"sigma":null,"ref":"MPO981708","value":"1.50","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","title":"absolute magnitude","name":"H","notes":null,"units":null},{"units":"h","notes":"[Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Gaudi, B.S.; Stanek, K.Z.; Hartman, J.D.; Holman, M.J.; McLeod, B.A. (2005) Astrophys. J. Let. 629, L49-L52.]","title":"rotation period","desc":"body rotation period (synodic)","name":"rot_per","value":"10.273","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","sigma":null}],"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"object":{"prefix":null,"fullname":"90377 Sedna (2003 VB12)","shortname":"90377 Sedna","spkid":"20090377","orbit_class":{"code":"TNO","name":"TransNeptunian Object"},"orbit_id":"51","neo":false,"pha":false,"kind":"an","des":"90377"}}