{"object":{"neo":false,"orbit_class":{"name":"Jupiter Trojan","code":"TJN"},"spkid":"20001143","pha":false,"orbit_id":"117","kind":"an","prefix":null,"fullname":"1143 Odysseus (1930 BH)","shortname":"1143 Odysseus","des":"1143"},"orbit":{"moid":"3.78","soln_date":"2026-06-05 04:33:08","rms":"0.23","model_pars":[],"epoch":"2461200.5","moid_jup":"0.0945","last_obs":"2026-04-13","cov_epoch":"2458688.5","comment":null,"source":"JPL","producer":"Otto Matic","equinox":"J2000","not_valid_before":null,"n_dop_obs_used":null,"data_arc":"10322","condition_code":"0","two_body":null,"not_valid_after":null,"sb_used":"SB441-N16","pe_used":"DE441","first_obs":"1998-01-08","t_jup":"2.989","elements":[{"sigma":"5.2e-09","value":"0.0899","name":"e","label":"e","title":"eccentricity","units":null},{"sigma":"2.5e-08","value":"5.23","name":"a","label":"a","units":"au","title":"semi-major axis"},{"units":"au","title":"perihelion distance","label":"q","name":"q","value":"4.76","sigma":"5e-08"},{"label":"i","name":"i","value":"3.14","sigma":"6.8e-08","title":"inclination; angle with respect to x-y ecliptic plane","units":"deg"},{"label":"node","name":"om","value":"221","sigma":"1.3e-06","units":"deg","title":"longitude of the ascending node"},{"title":"argument of perihelion","units":"deg","sigma":"2.4e-06","value":"239","name":"w","label":"peri"},{"name":"ma","label":"M","sigma":"3.6e-06","value":"69","title":"mean anomaly","units":"deg"},{"value":"2460364.119","sigma":"3.9e-05","label":"tp","name":"tp","title":"time of perihelion passage","units":"TDB"},{"title":"sidereal orbital period","units":"d","name":"per","label":"period","sigma":"3.1e-05","value":"4370"},{"label":"n","name":"n","value":"0.0825","sigma":"5.9e-10","title":"mean motion","units":"deg/d"},{"units":"au","title":"aphelion distance","sigma":"2.7e-08","value":"5.7","name":"ad","label":"Q"}],"n_del_obs_used":null,"orbit_id":"117","n_obs_used":7837},"phys_par":[{"name":"H","ref":"E2026-EA1","value":"8.38","notes":"IRAS observations used: 11","title":"absolute magnitude","units":null,"sigma":null,"desc":"absolute magnitude (magnitude at 1 au from Sun and observer)"},{"sigma":"0.592","desc":"effective body diameter","title":"diameter","units":"km","notes":null,"value":"114.624","name":"diameter","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)"},{"notes":"REFERENCE LIST:[Molnar, L.A.; Haegert, M.J.; Hoogenboom, K.M. (2008) Minor Planet Bull. 35, 82-84.], [Mottola, S.; Di Martino, M.; Erikson, A.; Gonano-Beurer, M.; et al. (2011) Astron. J. 141, A170.], [Shevchenko, V.G.; Belskya, I.N.; Slyusarev, L.G.; Krugly, Yu.N.; et al. (2012) Icarus 217, 202-208.], [Stephens, R.D.; Coley, D.R.; French, L.M. (2014) Minor Planet Bull. 41, 210-212.], [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.], [Ryan, E.L.; Sharkey, B.N.L.; Woodward, C.E. (2017) Astron. J. 153, A116.], [Szabo, Gy.M.; Pal, A.; Kiss, Cs.; Kiss, L.L.; et al. (2017) Astron. Astrophys. 599, A44.], [Stephens, R.D.; Warner, B.D. (2021) Minor Planet Bull. 48, 13-15.], [Stephens, R.D.; Warner, B.D. (2022) Minor Planet Bull. 49, 51-55.], [Stephens, R.D. (2023) Minor Planet Bull. 50, 157-161.]","title":"rotation period","units":"h","sigma":null,"desc":"body rotation period (synodic)","value":"10.114","name":"rot_per","ref":"LCDB (Rev. 2023-October); Warner et al., 2009"},{"ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G)","name":"albedo","value":"0.050","notes":null,"title":"geometric albedo","units":null,"sigma":"0.007","desc":"geometric albedo"},{"title":"B-V","units":null,"notes":"#obs=3; phase (min.=3.90, mean=4.30, max.=4.87) deg.","sigma":"0.038","desc":"color index B-V magnitude difference","name":"BV","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","value":"0.794"},{"desc":"color index U-B magnitude difference","sigma":"0.030","notes":"#obs=3; phase (min.=3.90, mean=4.30, max.=4.87) deg.","units":null,"title":"U-B","name":"UB","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","value":"0.241"},{"notes":"used 4 color indices; used ground-based radiometric albedo","title":"Tholen spectral type","units":null,"sigma":null,"desc":"Tholen spectral taxonomic classification","name":"spec_T","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","value":"D"}],"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"}}