{"object":{"prefix":null,"neo":false,"fullname":"488 Kreusa (A902 MC)","orbit_id":"143","spkid":"20000488","shortname":"488 Kreusa","kind":"an","orbit_class":{"name":"Main-belt Asteroid","code":"MBA"},"pha":false,"des":"488"},"orbit":{"model_pars":[],"pe_used":"DE441","orbit_id":"143","rms":"0.32","two_body":null,"moid_jup":"1.52","elements":[{"sigma":"3.3e-09","units":null,"title":"eccentricity","value":"0.159","name":"e","label":"e"},{"label":"a","name":"a","value":"3.17","units":"au","sigma":"6.2e-09","title":"semi-major axis"},{"sigma":"1.4e-08","units":"au","title":"perihelion distance","label":"q","value":"2.67","name":"q"},{"label":"i","name":"i","value":"11.5","units":"deg","sigma":"1.5e-07","title":"inclination; angle with respect to x-y ecliptic plane"},{"value":"83","name":"om","label":"node","sigma":"1e-06","title":"longitude of the ascending node","units":"deg"},{"label":"peri","value":"77.3","name":"w","sigma":"1.5e-06","units":"deg","title":"argument of perihelion"},{"sigma":"9.6e-07","units":"deg","title":"mean anomaly","name":"ma","value":"101","label":"M"},{"value":"2460624.424","name":"tp","label":"tp","sigma":"4.3e-06","title":"time of perihelion passage","units":"TDB"},{"title":"sidereal orbital period","sigma":"6e-06","units":"d","value":"2060","name":"per","label":"period"},{"label":"n","value":"0.175","name":"n","sigma":"5.1e-10","title":"mean motion","units":"deg/d"},{"label":"Q","value":"3.67","name":"ad","sigma":"7.2e-09","units":"au","title":"aphelion distance"}],"first_obs":"1901-02-13","producer":"Otto Matic","cov_epoch":"2458504.5","source":"JPL","n_del_obs_used":null,"comment":null,"condition_code":"0","n_dop_obs_used":null,"sb_used":"SB441-N16","moid":"1.7","not_valid_after":null,"soln_date":"2026-06-05 03:40:03","not_valid_before":null,"last_obs":"2026-04-05","epoch":"2461200.5","data_arc":"45707","equinox":"J2000","n_obs_used":5883,"t_jup":"3.153"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"phys_par":[{"name":"H","value":"7.89","notes":"IRAS observations used: 20","sigma":null,"units":null,"desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","title":"absolute magnitude","ref":"MPO980529"},{"value":"168.117","name":"diameter","notes":null,"sigma":"2.062","units":"km","desc":"effective body diameter","title":"diameter","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)"},{"notes":"REFERENCE LIST:[Stephens, R.D. (2014) Minor Planet Bull. 41, 226-230.], [Pilcher, F. (2019) Minor Planet Bull. 46, 360-363.]","value":"32.645","name":"rot_per","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","sigma":null,"units":"h","desc":"body rotation period (synodic)","title":"rotation period"},{"name":"albedo","value":"0.047","notes":null,"units":null,"sigma":"0.006","desc":"geometric albedo","title":"geometric albedo","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)"},{"name":"BV","value":"0.691","notes":"#obs=2; phase (min.=7.94, mean=12.60, max.=17.25) deg.","sigma":"0.006","units":null,"desc":"color index B-V magnitude difference","title":"B-V","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2"},{"value":"0.368","name":"UB","notes":"#obs=2; phase (min.=7.94, mean=12.60, max.=17.25) deg.","units":null,"sigma":"0.030","title":"U-B","desc":"color index U-B magnitude difference","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2"},{"notes":"used 4 color indices","name":"spec_T","value":"C","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","units":null,"sigma":null,"desc":"Tholen spectral taxonomic classification","title":"Tholen spectral type"}]}
