+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   212100 (2005 EX151) Classification: Main-belt Asteroid          SPK-ID: 2212100 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 17 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07834036619885552 4.0029e-08   a 2.553734308800596 1.7614e-08 au q 2.353673827874576 9.6745e-08 au i 4.055615875274272 5.0093e-06 deg node 55.67448313799718 6.0004e-05 deg peri 282.4994629344304 6.8823e-05 deg M 119.2407716328894 3.3764e-05 deg tp 2458506.775963874298 (2019-Jan-23.27596387) 0.0001391 TDB period 1490.603009115616 4.08 1.5422e-05 4.222e-08 d yr n .2415129969538907 2.4987e-09 deg/d Q 2.753794789726616 1.8994e-08 au   Orbit Determination Parameters    # obs. used (total)      354      data-arc span      7834 days (21.45 yr)      first obs. used      1998-08-17      last obs. used      2020-01-28      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .53099      source      ORB      producer      Otto Matic      solution date      2020-Feb-25 02:41:53   Additional Information  Earth MOID = 1.34866 au   Jupiter MOID = 2.51641 au   T_jup = 3.431  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 16.0   n/a MPO454522   212100 (2005 EX151)          Discovered 2005-Mar-10 by Spacewatch at Kitt Peak Reference: 20090409/Numbers.arc Last Updated: 2009-04-10 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 2040-Sep-12 04:02 00:01 Ceres 0.0174009572118029 0.0173984760206962 0.0174034429541975 3.419219438382 3.41921233783176 2466409.667862168 1.12744073685227 566.869447861083 74.6662255258729 -80.0891815096485 33961.1045579881 T 17 CATAB v2.0f-lin.ifort 2020-Feb-25 02:42:10 2020-Feb-25 02:42 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Aug-05 19:45 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin