+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2011 EH17) Classification: Aten [NEO]          SPK-ID: 3558388 [ 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 9 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6597360714693205 2.4588e-05   a .7310476814709522 5.5392e-09 au q .2487491560405511 1.7976e-05 au i 3.007214318235232 0.00030515 deg node 333.1360496630805 0.0010235 deg peri 35.94520986775623 0.0011115 deg M 336.4964041865301 0.0031359 deg tp 2459215.405576995651 (2020-Dec-31.90557700) 0.0019887 TDB period 228.305820140046 0.63 2.5948e-06 7.104e-09 d yr n 1.576832337341076 1.7922e-08 deg/d Q 1.213346206901353 9.1935e-09 au   Orbit Determination Parameters    # obs. used (total)      63      data-arc span      3654 days (10.00 yr)      first obs. used      2011-03-06      last obs. used      2021-03-07      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      3      norm. resid. RMS      .62484      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 04:52:51   Additional Information  Earth MOID = .0073648 au   Jupiter MOID = 4.25209 au   T_jup = 7.680  [ 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 24.6   n/a MPO196819   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-May-06 05:16 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin