+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2011 ES4) Classification: Apollo [NEO]          SPK-ID: 3558279 [ 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 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2433527992478623 1.1423e-07   a 1.096322632435585 1.1748e-08 au q .8295294509536002 1.1971e-07 au i 3.370676247270515 7.9971e-06 deg node 339.8385637423681 1.3027e-05 deg peri 274.7266754877485 1.7773e-05 deg M 148.5673241107033 1.1023e-05 deg tp 2459027.467852850003 (2020-Jun-26.96785285) 1.0367e-05 TDB period 419.2817858628403 1.15 6.7397e-06 1.845e-08 d yr n .8586111110435093 1.3802e-08 deg/d Q 1.36311581391757 1.4607e-08 au   Orbit Determination Parameters    # obs. used (total)      142      data-arc span      3489 days (9.55 yr)      first obs. used      2011-02-23      last obs. used      2020-09-12      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .45347      source      ORB      producer      Otto Matic      solution date      2020-Sep-21 06:59:41   Additional Information  Earth MOID = .000199995 au   Jupiter MOID = 3.67451 au   T_jup = 5.635  [ 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 25.9   n/a E2020-SD9   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-05 17:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin