{"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"orbit":{"soln_date":"2026-06-05 03:56:42","producer":"Otto Matic","orbit_id":"140","n_del_obs_used":null,"comment":null,"moid_jup":"1.95","elements":[{"title":"eccentricity","name":"e","value":"0.0153","label":"e","units":null,"sigma":"1.6e-09"},{"units":"au","sigma":"3.5e-09","label":"a","name":"a","title":"semi-major axis","value":"3.19"},{"sigma":"3.9e-09","units":"au","label":"q","value":"3.14","name":"q","title":"perihelion distance"},{"label":"i","sigma":"1.2e-07","units":"deg","value":"20.6","name":"i","title":"inclination; angle with respect to x-y ecliptic plane"},{"title":"longitude of the ascending node","name":"om","value":"290","label":"node","units":"deg","sigma":"3.9e-07"},{"value":"352","name":"w","title":"argument of perihelion","sigma":"7.9e-06","units":"deg","label":"peri"},{"title":"mean anomaly","name":"ma","value":"141","label":"M","units":"deg","sigma":"7.3e-06"},{"units":"TDB","sigma":"4.3e-05","label":"tp","title":"time of perihelion passage","name":"tp","value":"2460381.695"},{"units":"d","sigma":"3.4e-06","label":"period","title":"sidereal orbital period","name":"per","value":"2080"},{"sigma":"2.8e-10","units":"deg/d","label":"n","value":"0.173","title":"mean motion","name":"n"},{"title":"aphelion distance","name":"ad","value":"3.24","label":"Q","units":"au","sigma":"3.5e-09"}],"condition_code":"0","rms":"0.26","not_valid_after":null,"first_obs":"1910-07-17","sb_used":"SB441-N16","pe_used":"DE441","epoch":"2461200.5","moid":"2.13","source":"JPL","equinox":"J2000","two_body":null,"n_obs_used":10170,"cov_epoch":"2458135.5","model_pars":[],"data_arc":"42239","t_jup":"3.096","last_obs":"2026-03-09","not_valid_before":null,"n_dop_obs_used":null},"phys_par":[{"notes":"IRAS observations used: 26","name":"H","value":"7.47","ref":"E2025-UJ7","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","units":null,"sigma":null,"title":"absolute magnitude"},{"notes":null,"desc":"effective body diameter","value":"190.980","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)","name":"diameter","sigma":"1.973","units":"km","title":"diameter"},{"notes":"[Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html], [Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html], [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html], [Polakis, T. (2021) Minor Planet Bull. 48, 239-245.], [Colazo, M.; Monteleone, B.; Santos, F.; Morales, M.; et al. (2022) Minor Planet Bull. 49, 189-192.], [Behrend, R. (2023) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]","desc":"body rotation period (synodic)","name":"rot_per","value":"16.7072","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","units":"h","sigma":null,"title":"rotation period"},{"ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)","value":"0.061","name":"albedo","desc":"geometric albedo","notes":null,"title":"geometric albedo","sigma":"0.011","units":null},{"desc":"color index B-V magnitude difference","value":"0.665","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","name":"BV","notes":"#obs=7; phase (min.=2.23, mean=6.88, max.=14.75) deg.","title":"B-V","sigma":"0.022","units":null},{"units":null,"sigma":"0.014","title":"U-B","notes":"#obs=7; phase (min.=2.23, mean=6.88, max.=14.75) deg.","name":"UB","value":"0.316","ref":"EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2","desc":"color index U-B magnitude difference"},{"title":"Tholen spectral type","sigma":null,"units":null,"value":"C","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","name":"spec_T","desc":"Tholen spectral taxonomic classification","notes":"used 7 color indices"},{"units":null,"sigma":null,"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","name":"spec_B","value":"B","ref":"EAR-A-5-DDR-TAXONOMY-V4.0"}],"object":{"orbit_class":{"name":"Main-belt Asteroid","code":"MBA"},"fullname":"702 Alauda (A910 OA)","orbit_id":"140","kind":"an","prefix":null,"pha":false,"des":"702","shortname":"702 Alauda","neo":false,"spkid":"20000702"}}