{"object":{"kind":"an","prefix":null,"pha":false,"orbit_id":"171","neo":false,"orbit_class":{"code":"CEN","name":"Centaur"},"spkid":"20002060","shortname":"2060 Chiron","des":"2060","fullname":"2060 Chiron (1977 UB)"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"orbit":{"rms":"0.41","cov_epoch":"2457916.5","n_del_obs_used":null,"comment":null,"producer":"Otto Matic","condition_code":"0","not_valid_after":null,"soln_date":"2026-06-05 06:09:00","two_body":null,"equinox":"J2000","epoch":"2461200.5","first_obs":"1895-04-24","model_pars":[],"moid_jup":"3.06","not_valid_before":null,"sb_used":"SB441-N16","orbit_id":"171","data_arc":"47770","source":"JPL","moid":"7.49","last_obs":"2026-02-06","pe_used":"DE441","elements":[{"title":"eccentricity","value":"0.38","units":null,"label":"e","sigma":"1.8e-08","name":"e"},{"title":"semi-major axis","value":"13.7","label":"a","units":"au","sigma":"5.3e-07","name":"a"},{"units":"au","label":"q","name":"q","sigma":"5.6e-07","title":"perihelion distance","value":"8.49"},{"title":"inclination; angle with respect to x-y ecliptic plane","value":"6.93","sigma":"4.1e-07","name":"i","label":"i","units":"deg"},{"name":"om","sigma":"2.3e-06","units":"deg","label":"node","title":"longitude of the ascending node","value":"209"},{"value":"339","title":"argument of perihelion","sigma":"7e-06","name":"w","label":"peri","units":"deg"},{"title":"mean anomaly","value":"217","sigma":"1.6e-05","name":"ma","units":"deg","label":"M"},{"label":"tp","units":"TDB","name":"tp","sigma":"0.0012","value":"2468559.421","title":"time of perihelion passage"},{"label":"period","units":"d","sigma":"0.0011","name":"per","title":"sidereal orbital period","value":"18500"},{"title":"mean motion","value":"0.0195","sigma":"1.1e-09","name":"n","label":"n","units":"deg/d"},{"units":"au","label":"Q","sigma":"7.3e-07","name":"ad","value":"18.9","title":"aphelion distance"}],"t_jup":"3.359","n_obs_used":6026,"n_dop_obs_used":null},"phys_par":[{"ref":"MPO964302","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","notes":null,"value":"5.54","title":"absolute magnitude","sigma":null,"name":"H","units":null},{"name":"diameter","sigma":null,"units":"km","title":"diameter","notes":"Yeomans E-mail 2001-Apr-04","desc":"effective body diameter","value":"166","ref":"Dunham occultation list: Duham 1998"},{"desc":"body rotation period (synodic)","notes":"REFERENCE LIST:[Bus, S.J.; Bowell, E.; Harris, A.W.; Hewitt, A.V. (1989) Icarus 77, 223-238.], [Luu, J.X.; Jewitt, D.C. (1990) Astron. J. 100, 913-932.], [Marcialis, R.L.; Buratti, B.J. (1993) Icarus 104, 234-243.], [Lazzaro, D.; Florczak, M.A.; Angeli, C.A.; Carvano, J.M.; et al. (1997) Planet. Space Sci. 45, 1607-1614.], [Skiff, B.A.; McLelland, K.P.; Sanborn, J.J.; Koehn, B.W. (2023) Minor Planet Bull. 50, 74-101.]","title":"rotation period","value":"5.918","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","units":"h","sigma":null,"name":"rot_per"},{"notes":null,"value":"0.15","title":"geometric albedo","desc":"geometric albedo","ref":"Earth, Moon, and Planets, v. 89, Issue 1, p. 117-134 (2002)","units":null,"sigma":"0.03","name":"albedo"},{"ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","desc":"color index B-V magnitude difference","notes":"#obs=3; phase (min.=1.81, mean=2.51, max.=2.88) deg.","title":"B-V","value":"0.704","units":null,"name":"BV","sigma":"0.024"},{"notes":"#obs=3; phase (min.=1.81, mean=2.51, max.=2.88) deg.","desc":"color index U-B magnitude difference","title":"U-B","value":"0.283","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","units":null,"name":"UB","sigma":"0.060"},{"sigma":null,"name":"spec_T","units":null,"ref":"EAR-A-5-DDR-TAXONOMY-V4.0","title":"Tholen spectral type","notes":"used 4 color indices; used ground-based radiometric albedo","desc":"Tholen spectral taxonomic classification","value":"B"},{"title":"SMASSII spectral type","notes":"based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)","desc":"SMASSII spectral taxonomic classification","value":"Cb","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","units":null,"sigma":null,"name":"spec_B"}]}