+ View the NASA Portal + Near-Earth Object (NEO) Program Search JPL JPL Small-Body Database Browser Search: [ help ]   (2008 HJ) Classification: Apollo [NEO]          SPK-ID: 3409625 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4070214059062855 9.4141e-05   a 1.632041691963115 0.00024069 AU q .9677657880026148 1.0919e-05 AU i .9264416818736796 0.00013 deg node 47.50455635870696 0.00091813 deg peri 204.0667709635283 0.00065807 deg M 125.2003567157333 0.19033 deg tp 2456135.650982705159 (2012-Jul-27.15098271) 0.34404 JED period 761.5445253293061 2.08 0.16847 0.0004612 d yr n .472723508640981 0.00010458 deg/d Q 2.296317595923615 0.00033866 AU   Orbit Determination Parameters    # obs. used (total)      78      data-arc span      6 days      first obs. used      2008-04-24      last obs. used      2008-04-30      planetary ephem.      DE405      SB-pert. ephem.      SB405-CPV-2      condition code      6      fit RMS      .52891      data source      ORB      producer      Otto Matic      solution date      2011-Sep-14 20:27:46   Additional Information  Earth MOID = .00173825 AU   T_jup = 4.211  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 25.745 mag .56782 8 autocmod 2.5a rotation period rot_per 0.01185 h n/a Asteroid Lightcurve DataBase (Rev. 2013-May-01) Incomplete or inconclusive result. Published Reference List: [Miles, R. (2008) CBET 1382.] [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] 2013-Jun-19 00:01 UT (server date/time)   Site Manager:   Donald K. Yeomans Webmaster:   Alan B. Chamberlin