{"object":{"neo":false,"orbit_id":"16","prefix":"A","spkid":"50788063","orbit_class":{"code":"HYA","name":"Hyperbolic Asteroid"},"des":"2017 U1","pha":false,"kind":"au","fullname":"'Oumuamua (A/2017 U1)"},"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"phys_par":[{"value":"22.08","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","title":"absolute magnitude","notes":"autocmod 2.6k","sigma":".44525","units":null,"name":"H","ref":"2"},{"title":"rotation period","desc":"body rotation period (synodic)","value":"7.937","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","name":"rot_per","units":"h","sigma":null,"notes":"[Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Bannister, M.T.; Schwamb, M.E.; Fraser, W.C.; Marsset, M.; et al. (2017) Astrophys. J. Letters 851, L38. arXiv1711.06214], [Bolin, B.T.; Weaver, H.A.; Fernandez, Y.R.; Lisse, C.M.; et al. (2017) Astrophys. J. Letters 852, L2. arXiv:1711.04927], [Drahus, M.; Guzik, P.; Waniak, W.; Handzlik, B.; et al. (2017) ArXiv:171200437], [Fraser, W.C.; Pravec, P.; Fitzsimmons, A.; Lacerda, P.; et al. (2017) Nature Astronomy 2, 383-386. arXiv:1711.11530], [Jewitt, D.; Luu, J.; Rajagopal, J.; Kotulla, R.; et al. (2017) Astrophys. J. Letters 850, L36.]"}],"orbit":{"equinox":"J2000","data_arc":"80","not_valid_after":null,"condition_code":null,"model_pars":[{"name":"A1","units":"au/d^2","sigma":"3.574E-8","n":1,"title":"non-grav. radial accel.","desc":"non-gravitational radial acceleration parameter","kind":"EST","value":"2.790193364334668E-7"},{"value":"1.441264159911234E-8","title":"non-grav. transverse accel.","n":2,"desc":"non-gravitational transverse acceleration parameter","kind":"EST","sigma":"2.445E-8","name":"A2","units":"au/d^2"},{"sigma":"2.249E-8","units":"au/d^2","name":"A3","value":"1.57392261588653E-8","kind":"EST","desc":"non-gravitational normal acceleration parameter","title":"non-grav. normal accel.","n":3},{"value":".0408373333128795","kind":"SET","desc":"normalizing factor [default 0.1112620426]","title":"normalizing factor","n":0,"sigma":null,"units":null,"name":"ALN"},{"value":"2.6","desc":"non-grav. model constant, exponent k [default 4.6142]","kind":"SET","n":0,"title":"non-grav. model exp. k","sigma":null,"units":null,"name":"NK"},{"value":"2.","kind":"SET","desc":"non-grav. model constant, exponent m [default 2.15]","title":"non-grav. model exp. m","n":0,"sigma":null,"units":null,"name":"NM"},{"sigma":null,"name":"NN","units":null,"value":"3.","n":0,"title":"non-grav. model exp. n","kind":"SET","desc":"non-grav. model constant, exponent n [default 5.093]"},{"sigma":null,"units":"au","name":"R0","value":"5.","kind":"SET","desc":"normalizing distance, au [default 2.808 au]","title":"normalizing distance","n":0}],"epoch":"2458080.5","n_del_obs_used":null,"first_obs":"2017-10-14","last_obs":"2018-01-02","two_body":null,"t_jup":null,"orbit_id":"16","sb_used":"SB431-N16","rms":".43612","cov_epoch":"2458080.5","elements":[{"sigma":"2.1064E-5","value":"1.201133796102373","title":"eccentricity","name":"e","units":null,"label":"e"},{"units":"au","label":"a","name":"a","title":"semi-major axis","value":"-1.27234500742808","sigma":".00010015"},{"sigma":"6.6635E-6","value":".2559115812959116","name":"q","title":"perihelion distance","label":"q","units":"au"},{"sigma":".00028826","value":"122.7417062847286","name":"i","title":"inclination; angle with respect to x-y ecliptic plane","units":"deg","label":"i"},{"units":"deg","label":"node","name":"om","title":"longitude of the ascending node","value":"24.59690955523242","sigma":".00025422"},{"name":"w","title":"argument of perihelion","units":"deg","label":"peri","sigma":".0012495","value":"241.8105360304898"},{"label":"M","units":"deg","name":"ma","title":"mean anomaly","value":"51.1576197938249","sigma":".0061155"},{"label":"tp","units":"TDB","title":"time of perihelion passage","name":"tp","value":"2458006.007321375231","sigma":".00026424"},{"units":"d","label":"period","title":"sidereal orbital period","name":"per","value":null,"sigma":null},{"sigma":"8.1084E-5","value":".6867469493413392","name":"n","title":"mean motion","units":"deg/d","label":"n"},{"label":"Q","units":"au","title":"aphelion distance","name":"ad","value":null,"sigma":null}],"n_obs_used":207,"pe_used":"DE431","moid_jup":"1.45424","moid":".0958212","soln_date":"2018-06-26 12:17:57","producer":"Davide Farnocchia","n_dop_obs_used":null,"not_valid_before":null,"comment":"Sol. 7c, Micheli et al. 2018","source":"JPL"}}