{"phys_par":[{"notes":null,"name":"H","ref":"E2026L10","value":"8.28","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","units":null,"sigma":null,"title":"absolute magnitude"},{"desc":"effective body diameter","name":"diameter","value":"109.568","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)","notes":null,"title":"diameter","units":"km","sigma":"1.987"},{"title":"rotation period","units":"h","sigma":null,"desc":"body rotation period (synodic)","name":"rot_per","value":"9.347","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","notes":"REFERENCE LIST:[Danforth, C.W. (1994) Minor Planet Bull. 21, 4-5.], [Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html], [Polakis, T.; Skiff, B.A. (2016) Minor Planet Bull. 43, 310.], [Brines, P.; Lozano, J.; Rodrigo, O.; Fornas, A.; et al. (2017) Minor Planet Bull. 44, 145-149.], [Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2020) Ap. J. Supl. Ser. 247, id.26.], [Franco, L.; Iozzi, M.; Scarfi, G.; Mortari, F.; et al. (2023) Minor Planet Bull. 50, 47-50.]"},{"notes":null,"name":"albedo","value":"0.071","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)","desc":"geometric albedo","units":null,"sigma":"0.018","title":"geometric albedo"},{"value":"FCB","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","name":"spec_T","desc":"Tholen spectral taxonomic classification","notes":"based on a medium resolution spectrum published by Chapman and Gaffey (1979)","title":"Tholen spectral type","sigma":null,"units":null},{"notes":"based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)","desc":"SMASSII spectral taxonomic classification","value":"B","ref":"EAR-A-5-DDR-TAXONOMY-V4.0","name":"spec_B","sigma":null,"units":null,"title":"SMASSII spectral type"}],"orbit":{"elements":[{"value":"0.142","name":"e","title":"eccentricity","sigma":"1.7e-09","units":null,"label":"e"},{"label":"a","sigma":"3.8e-09","units":"au","value":"3.2","name":"a","title":"semi-major axis"},{"label":"q","units":"au","sigma":"4.4e-09","name":"q","title":"perihelion distance","value":"2.75"},{"sigma":"1.3e-07","units":"deg","label":"i","value":"26.1","name":"i","title":"inclination; angle with respect to x-y ecliptic plane"},{"value":"265","title":"longitude of the ascending node","name":"om","sigma":"2.4e-07","units":"deg","label":"node"},{"name":"w","title":"argument of perihelion","value":"177","label":"peri","units":"deg","sigma":"7.6e-07"},{"value":"141","name":"ma","title":"mean anomaly","label":"M","sigma":"6.2e-07","units":"deg"},{"name":"tp","title":"time of perihelion passage","value":"2460377.930","label":"tp","units":"TDB","sigma":"2.9e-06"},{"name":"per","title":"sidereal orbital period","value":"2090","units":"d","sigma":"3.7e-06","label":"period"},{"label":"n","units":"deg/d","sigma":"3e-10","name":"n","title":"mean motion","value":"0.172"},{"label":"Q","units":"au","sigma":"4.3e-09","title":"aphelion distance","name":"ad","value":"3.66"}],"condition_code":"0","moid_jup":"1.62","comment":null,"n_del_obs_used":null,"orbit_id":"109","producer":"Otto Matic","soln_date":"2026-06-05 04:11:34","n_dop_obs_used":null,"not_valid_before":null,"t_jup":"3.019","last_obs":"2026-04-12","cov_epoch":"2458067.5","data_arc":"43760","model_pars":[],"n_obs_used":6497,"two_body":null,"source":"JPL","equinox":"J2000","moid":"1.76","sb_used":"SB441-N16","epoch":"2461200.5","pe_used":"DE441","first_obs":"1906-06-21","rms":"0.32","not_valid_after":null},"signature":{"source":"NASA/JPL Small-Body Database (SBDB) API","version":"1.3"},"object":{"orbit_class":{"name":"Outer Main-belt Asteroid","code":"OMB"},"fullname":"895 Helio (A918 NA)","kind":"an","orbit_id":"109","pha":false,"prefix":null,"shortname":"895 Helio","des":"895","spkid":"20000895","neo":false}}
