{"orbit":{"n_del_obs_used":null,"producer":"Otto Matic","comment":null,"condition_code":"0","not_valid_after":null,"soln_date":"2026-06-05 03:56:01","two_body":null,"rms":"0.28","cov_epoch":"2458363.5","pe_used":"DE441","last_obs":"2026-04-13","elements":[{"label":"e","units":null,"name":"e","sigma":"1.2e-09","title":"eccentricity","value":"0.323"},{"label":"a","units":"au","sigma":"1.5e-09","name":"a","title":"semi-major axis","value":"2.67"},{"title":"perihelion distance","value":"1.81","sigma":"3.5e-09","name":"q","units":"au","label":"q"},{"title":"inclination; angle with respect to x-y ecliptic plane","value":"15.9","units":"deg","label":"i","name":"i","sigma":"9.3e-08"},{"sigma":"3e-07","name":"om","units":"deg","label":"node","value":"230","title":"longitude of the ascending node"},{"value":"112","title":"argument of perihelion","sigma":"3.6e-07","name":"w","units":"deg","label":"peri"},{"sigma":"5.1e-07","name":"ma","label":"M","units":"deg","title":"mean anomaly","value":"294"},{"value":"2461494.293","title":"time of perihelion passage","units":"TDB","label":"tp","name":"tp","sigma":"2.5e-06"},{"units":"d","label":"period","name":"per","sigma":"1.3e-06","title":"sidereal orbital period","value":"1590"},{"label":"n","units":"deg/d","sigma":"1.9e-10","name":"n","value":"0.226","title":"mean motion"},{"label":"Q","units":"au","sigma":"1.9e-09","name":"ad","title":"aphelion distance","value":"3.53"}],"t_jup":"3.253","n_obs_used":8528,"n_dop_obs_used":null,"first_obs":"1909-11-15","model_pars":[],"equinox":"J2000","epoch":"2461200.5","not_valid_before":null,"moid_jup":"2.23","sb_used":"SB441-N16","data_arc":"42518","orbit_id":"71","moid":"0.869","source":"JPL"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"object":{"neo":false,"orbit_class":{"code":"MBA","name":"Main-belt Asteroid"},"pha":false,"orbit_id":"71","kind":"an","prefix":null,"spkid":"20000694","shortname":"694 Ekard","des":"694","fullname":"694 Ekard (A909 VC)"},"phys_par":[{"ref":"E2026L10","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","notes":"IRAS observations used: 24","title":"absolute magnitude","value":"9.25","units":null,"sigma":null,"name":"H"},{"notes":null,"title":"diameter","value":"121.891","desc":"effective body diameter","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)","sigma":"0.721","name":"diameter","units":"km"},{"name":"rot_per","sigma":null,"units":"h","desc":"body rotation period (synodic)","notes":"REFERENCE LIST:[Zeigler, K.W.; Tomlinson, D. (1984) Minor Planet Bull. 11, 21-22.], [Zeigler, K.W.; Florence, W.B. (1985) Icarus 62, 512-517.], [Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R.; Greenberg, R.; et al. (1987) Icarus 70, 191-245.], [Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1988) Icarus 76, 19-77.], [Drummond, J.D.; Weidenschilling, S.J.; Chapman, C.R.; Davis, D.R. (1991) Icarus 89, 44-64.], [Michalowski, T. (1993) Icarus 106, 563-572.], [De Angelis, G. (1995) Planet. Space Sci. 43, 649-682.], [Hainaut-Rouelle, M.-C.; Hainaut, O.R.; Detal, A. (1995) Astron. Astrophys. Suppl. Ser. 112, 125-142.], [Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2003) Abstracts of Photometry and Polarimetry of Asteroids: Impact on Collaboration, Kharkiv, 9-10.], [Torppa, J.; Kaasalainen, M.; Michalowski, T.; Kwiatkowski, T.; et al. (2003) Icarus 164, 346-383.], [Chiorny, V.G.; Shevchenko, V.G.; Krugly, Yu.N.; Velichko, F.P.; Gaftonyuk, N.M. (2007) Planet. Space Sci. 55, 986-997.], [Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html], [Alton, K.B. (2019) Minor Planet Bull. 46, 114-117.], [Behrend, R. (2022) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]","value":"5.925","title":"rotation period","ref":"LCDB (Rev. 2023-October); Warner et al., 2009"},{"notes":null,"value":"0.026","desc":"geometric albedo","title":"geometric albedo","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)","units":null,"name":"albedo","sigma":"0.003"},{"ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","desc":"color index B-V magnitude difference","notes":"#obs=4; phase (min.=7.91, mean=12.19, max.=20.28) deg.","value":"0.712","title":"B-V","name":"BV","sigma":"0.009","units":null},{"sigma":"0.030","name":"UB","units":null,"ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","notes":"#obs=1; phase=9.12 deg.","title":"U-B","desc":"color index U-B magnitude difference","value":"0.347"},{"desc":"Tholen spectral taxonomic classification","notes":"used 2 color indices; used ground-based radiometric albedo","title":"Tholen spectral type","value":"CP:","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","sigma":null,"name":"spec_T","units":null}]}