+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 8 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6360296183925953 0.00051526   a 2.28824313105557 0.0029911 au q .8328527256208185 9.0402e-05 au i .126346632585838 7.2345e-05 deg node 161.9269804872393 0.0044571 deg peri 55.0565014821726 0.0062738 deg M 288.6734070642167 1.9964 deg tp 2459450.995920031528 (2021-Aug-24.49592003) 7.5025 TDB period 1264.304483077434 3.46 2.4789 0.006787 d yr n .2847415356178496 0.0005583 deg/d Q 3.743633536490322 0.0048935 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 = 1.89219E-5 au   Jupiter MOID = 1.23196 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-Apr-14 04:17 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin