{"discovery":{"citation":"Wilson Beebe (b. 1993) is an American researcher at the University of Washington, where he develops software for discovering faint trans-Neptunian objects with novel shift-and-stack techniques in large astronomical survey image data, especially the NSF-DOE Vera C. Rubin Observatory’s Legacy Survey of Space and Time.","cref":"WGSBN Bull. 6, #11, 10","date":"1997-Apr-07","discovery":"","location":"La Silla","name":"Beebe","ref":"20010109/Numbers.arc","site":null,"who":"Elst, E. W."},"identity":{"des":"20220","fullname":"20220 Beebe (1997 GA40)","kind":"an","neo":false,"orbit_class":{"code":"MBA","name":"Main-belt Asteroid"},"orbit_id":"60","pha":false,"prefix":null,"shortname":"20220 Beebe","spkid":"20020220"},"orbit":{"comment":null,"condition_code":"0","cov_epoch":"2458401.5","data_arc":"12223","elements":{"a":{"label":"a","name":"a","sigma":8.3873e-10,"title":"semi-major axis","units":"au","value":2.739979966751602},"ad":{"label":"Q","name":"ad","sigma":9.1976e-10,"title":"aphelion distance","units":"au","value":3.004714002890205},"e":{"label":"e","name":"e","sigma":8.0525e-10,"title":"eccentricity","units":null,"value":0.09661896778481198},"i":{"label":"i","name":"i","sigma":4.1303e-8,"title":"inclination; angle with respect to x-y ecliptic plane","units":"deg","value":13.5289060143888},"ma":{"label":"M","name":"ma","sigma":5.3619e-7,"title":"mean anomaly","units":"deg","value":178.8150139797814},"n":{"label":"n","name":"n","sigma":9.9781e-11,"title":"mean motion","units":"deg/d","value":0.217311641653831},"om":{"label":"node","name":"om","sigma":1.4807e-7,"title":"longitude of the ascending node","units":"deg","value":188.5101773723044},"per":{"label":"period","name":"per","sigma":7.6065e-7,"title":"sidereal orbital period","units":"d","value":1656.607060994303},"q":{"label":"q","name":"q","sigma":2.8519e-9,"title":"perihelion distance","units":"au","value":2.475245930612999},"tp":{"label":"tp","name":"tp","sigma":0.000002126,"title":"time of perihelion passage","units":"TDB","value":2460377.6494034147},"w":{"label":"peri","name":"w","sigma":2.9681e-7,"title":"argument of perihelion","units":"deg","value":350.8286786823317}},"epoch":"2461200.5","equinox":"J2000","first_obs":"1992-04-07","last_obs":"2025-09-24","model_pars":[],"moid":"1.47919","moid_jup":"1.96008","n_del_obs_used":null,"n_dop_obs_used":null,"n_obs_used":4729,"not_valid_after":null,"not_valid_before":null,"orbit_id":"60","pe_used":"DE441","producer":"Otto Matic","rms":".43671","sb_used":"SB441-N16","soln_date":"2026-03-12 15:25:58","source":"JPL","t_jup":"3.303","two_body":null},"physical":[{"desc":"absolute magnitude (magnitude at 1 au from Sun and observer)","name":"H","notes":null,"ref":"E2025N01","sigma":null,"title":"absolute magnitude","units":null,"value":"13.87"},{"desc":"body rotation period (synodic)","name":"rot_per","notes":"[Result based on less than full coverage, so that the period may be wrong by 30 percent or so.]  REFERENCE LIST:[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2020) Ap. J. Supl. Ser. 247, id.26.]","ref":"LCDB (Rev. 2023-October); Warner et al., 2009","sigma":null,"title":"rotation period","units":"h","value":"2.99603"}],"retrieved_at":"2026-09-29T16:00:58Z","schema_version":1,"source":"https://ssd-api.jpl.nasa.gov/sbdb.api?sstr=20220&discovery=1&phys-par=1&full-prec=1"}