{"object":{"des":"42355","orbit_id":"41","shortname":"42355 Typhon","kind":"an","neo":false,"spkid":"20042355","orbit_class":{"code":"TNO","name":"TransNeptunian Object"},"pha":false,"prefix":null,"fullname":"42355 Typhon (2002 CR46)"},"signature":{"version":"1.3","source":"NASA/JPL Small-Body Database (SBDB) API"},"phys_par":[{"notes":null,"value":"7.63","ref":"E2024L29","title":"absolute magnitude","units":null,"sigma":null,"name":"H","desc":"absolute magnitude (magnitude at 1 au from Sun and observer)"},{"ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)","title":"diameter","units":"km","sigma":"50.000","notes":null,"value":"192.000","name":"diameter","desc":"effective body diameter"},{"value":"5.","notes":"[lower-limit; Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Dotto, E.; Pema, D.; Barucci, M.A.; Rossi, A. et al. (2008) Astron. Astrophys. 490, 829-833.], [Perna, D.; Dotto, E.; Barucci, M.A.; Rossi, A.; et al. (2008) Bull. Amer. Astron. Soc. 40, #47.08.]","units":"h","sigma":null,"ref":"LCDB (Rev. 2023-October); Warner et al., 2009","title":"rotation period","desc":"body rotation period (synodic)","name":"rot_per"},{"desc":"geometric albedo","name":"albedo","value":"0.050","notes":null,"units":null,"sigma":"0.030","ref":"urn:nasa:pds:neowise_diameters_albedos::2.0[centaurs] (http://adsabs.harvard.edu/abs/2013ApJ...773...22B)","title":"geometric albedo"}],"orbit":{"equinox":"J2000","rms":"0.48","moid_jup":"12.1","last_obs":"2025-06-30","not_valid_after":null,"n_obs_used":515,"first_obs":"1989-12-28","t_jup":"4.679","source":"JPL","n_del_obs_used":null,"condition_code":"1","sb_used":"SB441-N16","orbit_id":"41","pe_used":"DE441","producer":"Otto Matic","n_dop_obs_used":null,"two_body":null,"comment":null,"cov_epoch":"2457583.5","epoch":"2461200.5","model_pars":[],"moid":"16.5","data_arc":"12968","not_valid_before":null,"elements":[{"name":"e","label":"e","title":"eccentricity","sigma":"2.4e-06","units":null,"value":"0.537"},{"value":"37.8","sigma":"0.00022","units":"au","title":"semi-major axis","name":"a","label":"a"},{"sigma":"1.2e-05","units":"au","title":"perihelion distance","value":"17.5","name":"q","label":"q"},{"label":"i","name":"i","value":"2.43","title":"inclination; angle with respect to x-y ecliptic plane","sigma":"7.7e-06","units":"deg"},{"title":"longitude of the ascending node","units":"deg","sigma":"0.00013","value":"352","label":"node","name":"om"},{"title":"argument of perihelion","units":"deg","sigma":"0.00018","value":"159","label":"peri","name":"w"},{"name":"ma","label":"M","units":"deg","sigma":"0.0003","title":"mean anomaly","value":"31.1"},{"name":"tp","label":"tp","value":"2453864.372","title":"time of perihelion passage","units":"TDB","sigma":"0.0074"},{"value":"84800","units":"d","sigma":"0.74","title":"sidereal orbital period","label":"period","name":"per"},{"units":"deg/d","sigma":"3.7e-08","title":"mean motion","value":"0.00424","name":"n","label":"n"},{"label":"Q","name":"ad","units":"au","sigma":"0.00034","title":"aphelion distance","value":"58.1"}],"soln_date":"2026-06-06 01:55:29"}}