+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2008 EA9) Classification: Apollo [NEO]          SPK-ID: 3405189 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 20 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07406992138747845 0.00086641   a 1.048993217364077 0.0015855 au q .9712943722179214 0.00055916 au i .4408834455833855 0.0064432 deg node 123.9900249343984 1.5792 deg peri 343.7266474718988 2.1341 deg M 317.6311190254061 0.058492 deg tp 2459246.685105505744 (2021-Feb-01.18510551) 0.16847 TDB period 392.4257048950116 1.07 0.88967 0.002436 d yr n .9173710985530709 0.0020798 deg/d Q 1.126692062510232 0.0017029 au   Orbit Determination Parameters    # obs. used (total)      54      data-arc span      28 days      first obs. used      2008-03-06      last obs. used      2008-04-03      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .85497      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 01:29:26   Additional Information  Earth MOID = .00319913 au   Jupiter MOID = 3.889 au   T_jup = 5.856  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 27.7   n/a MPO140737   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Apr-21 21:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin