+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2011 DE5) Classification: Apollo [NEO]          SPK-ID: 3557956 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6361781954340727 0.00051785   a 2.287982882651692 0.0029863 au q .8324180611822907 9.8349e-05 au i .1263747461291644 7.3926e-05 deg node 161.9805393450497 0.0041694 deg peri 55.01262995000032 0.0059348 deg M 231.7175484955884 1.8851 deg tp 2459450.945583767401 (2021-Aug-24.44558377) 7.501 TDB period 1264.088799789484 3.46 2.4749 0.006776 d yr n .2847901192225995 0.00055758 deg/d Q 3.743547704121093 0.0048862 au   Orbit Determination Parameters    # obs. used (total)      36      data-arc span      4 days      first obs. used      2011-02-25      last obs. used      2011-03-01      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .53394      source      ORB      producer      Otto Matic      solution date      2017-Apr-06 08:54:21   Additional Information  Earth MOID = 4.42781E-5 au   Jupiter MOID = 1.2332 au   T_jup = 3.297  [ 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 26.4   n/a MPO193829   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-22 03:05 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin