+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   44821 Amadora (1999 TZ236) Classification: Main-belt Asteroid          SPK-ID: 2044821 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 1 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1031613806932682 9.163e-08   a 2.470499121701296 2.8742e-08 AU q 2.215639021305084 2.2586e-07 AU i 12.0748694716422 9.9394e-06 deg node 89.79633342704889 4.5851e-05 deg peri 89.23385250000467 7.1009e-05 deg M 35.58091544616507 5.2316e-05 deg tp 2456260.318694729846 (2012-Nov-28.81869473) 0.00020607 JED period 1418.324100559214 3.88 2.4751e-05 6.776e-08 d yr n .2538206886973576 4.4294e-09 deg/d Q 2.725359222097508 3.1707e-08 AU   Orbit Determination Parameters    # obs. used (total)      466      data-arc span      5329 days (14.59 yr)      first obs. used      1998-09-16      last obs. used      2013-04-19      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      0      fit RMS      .5465      data source      ORB      producer      Otto Matic      solution date      2013-Apr-29 16:02:09   Additional Information  Earth MOID = 1.25824 AU   T_jup = 3.447  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 14.696 mag .49953 1 autocmod 2.5c 44821 Amadora           Discovered 1999 Oct. 3 by the Catalina Sky Survey. Amadora Gonzalez is the wife of D. Martinez-Delgado, who first observed this minor planet on 1998 Sept. 15 at the Las Campanas Observatory. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20030501/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1999 TZ236 = 1998 SM35  [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2013-May-21 14:24 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin