+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2001 EC) Classification: Apollo [NEO, PHA]          SPK-ID: 3070541 [ 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 37 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .7662749174032019 7.2555e-07   a 2.59627555526146 1.5054e-08 au q .6068147185975328 1.8853e-06 au i .6073762289155036 3.7667e-05 deg node 316.0232253804555 0.0007818 deg peri 115.8709041369898 0.00069667 deg M 238.4209083190262 6.2903e-05 deg tp 2459516.537184505590 (2021-Oct-29.03718451) 0.00026886 TDB period 1528.00439494552 4.18 1.329e-05 3.639e-08 d yr n .2356014165867865 2.0491e-09 deg/d Q 4.585736391925388 2.659e-08 au   Orbit Determination Parameters    # obs. used (total)      259      data-arc span      6276 days (17.18 yr)      first obs. used      2001-03-03      last obs. used      2018-05-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      1      norm. resid. RMS      .29829      source      ORB      producer      Otto Matic      solution date      2018-May-10 06:24:46   Additional Information  Earth MOID = .00351876 au   Jupiter MOID = .74826 au   T_jup = 2.912  [ 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 18.5   n/a MPO411878   SMASSII spectral type spec_B Sq   n/a Binzel et al. (2004) Icarus 170, 259-294   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jan-18 17:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin