{"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"phys_par":[{"desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","name":"H","units":null,"value":"7.76","notes":"IRAS observations used: 17","title":"absolute magnitude","sigma":null,"ref":"MPO950948"},{"ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)","sigma":"2.158","title":"diameter","value":"207.869","notes":null,"name":"diameter","units":"km","desc":"effective body diameter"},{"notes":"REFERENCE LIST:[Pray, D. (2005) Minor Planet Bull. 32, 48-51.], [Pilcher, F. (2017) Minor Planet Bull. 44, 249-251.]","value":"16.21","name":"rot_per","units":"h","desc":"body rotation period (synodic)","sigma":null,"ref":"LCDB (Rev. 2023-October); Warner et al., 2009","title":"rotation period"},{"desc":"geometric albedo","units":null,"name":"albedo","value":"0.044","notes":null,"title":"geometric albedo","sigma":"0.008","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)"},{"name":"BV","units":null,"desc":"color index B-V magnitude difference","notes":"#obs=5; phase (min.=4.26, mean=11.70, max.=19.19) deg.","value":"0.743","title":"B-V","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","sigma":"0.015"},{"name":"UB","units":null,"desc":"color index U-B magnitude difference","notes":"#obs=5; phase (min.=4.26, mean=11.70, max.=19.19) deg.","value":"0.464","title":"U-B","sigma":"0.022","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2"},{"value":"G","notes":"used 7 color indices; used ground-based radiometric albedo","name":"spec_T","units":null,"desc":"Tholen spectral taxonomic classification","sigma":null,"ref":"EAR-A-5-DDR-TAXONOMY-V4.0","title":"Tholen spectral type"},{"name":"spec_B","units":null,"desc":"SMASSII spectral taxonomic classification","value":"Cgh","notes":"based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)","title":"SMASSII spectral type","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","sigma":null}],"object":{"fullname":"106 Dione (A868 TA)","orbit_id":"156","orbit_class":{"name":"Main-belt Asteroid","code":"MBA"},"shortname":"106 Dione","des":"106","spkid":"20000106","neo":false,"pha":false,"kind":"an","prefix":null},"orbit":{"t_jup":"3.174","condition_code":"0","sb_used":"SB441-N16","model_pars":[],"pe_used":"DE441","data_arc":"56489","not_valid_after":null,"cov_epoch":"2457566.5","comment":null,"n_obs_used":10152,"moid_jup":"1.75","source":"JPL","last_obs":"2025-11-12","orbit_id":"156","n_del_obs_used":null,"first_obs":"1871-03-16","elements":[{"units":null,"name":"e","title":"eccentricity","label":"e","sigma":"1.9e-09","value":"0.159"},{"title":"semi-major axis","label":"a","name":"a","units":"au","value":"3.18","sigma":"4.5e-09"},{"label":"q","title":"perihelion distance","name":"q","units":"au","sigma":"6.9e-09","value":"2.68"},{"sigma":"1.5e-07","value":"4.57","units":"deg","name":"i","title":"inclination; angle with respect to x-y ecliptic plane","label":"i"},{"value":"62","sigma":"2.2e-06","title":"longitude of the ascending node","label":"node","units":"deg","name":"om"},{"name":"w","units":"deg","title":"argument of perihelion","label":"peri","value":"332","sigma":"2.4e-06"},{"units":"deg","name":"ma","label":"M","title":"mean anomaly","value":"315","sigma":"2e-06"},{"sigma":"1.2e-05","value":"2461461.873","label":"tp","title":"time of perihelion passage","units":"TDB","name":"tp"},{"name":"per","units":"d","title":"sidereal orbital period","label":"period","value":"2070","sigma":"4.4e-06"},{"units":"deg/d","name":"n","label":"n","title":"mean motion","value":"0.174","sigma":"3.7e-10"},{"value":"3.69","sigma":"5.2e-09","title":"aphelion distance","label":"Q","name":"ad","units":"au"}],"equinox":"J2000","two_body":null,"rms":"0.28","n_dop_obs_used":null,"moid":"1.68","not_valid_before":null,"producer":"Otto Matic","epoch":"2461200.5","soln_date":"2025-11-19 21:57:38"}}
