+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 WL2) Classification: Aten [NEO]          SPK-ID: 3836660 [ 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 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6766591891211818 3.5908e-05   a .8837237717866711 2.8828e-05 au q .2857439609623899 2.2433e-05 au i 34.93505341499565 0.0055641 deg node 65.27704098238326 0.0005827 deg peri 149.2444778464447 0.0002323 deg M 80.7226139291504 0.036448 deg tp 2459132.459742436821 (2020-Oct-09.95974244) 0.027392 TDB period 303.4402818551335 0.83 0.014848 4.065e-05 d yr n 1.186394890615969 5.8053e-05 deg/d Q 1.481703582610952 4.8335e-05 au   Orbit Determination Parameters    # obs. used (total)      31      data-arc span      37 days      first obs. used      2018-11-02      last obs. used      2018-12-09      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      6      norm. resid. RMS      .4991      source      ORB      producer      Otto Matic      solution date      2018-Dec-09 07:09:43   Additional Information  Earth MOID = .0832532 au   Jupiter MOID = 3.56714 au   T_jup = 6.386  [ 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 21.9   .48103 E2018X61 autocmod 2.6q [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-04 20:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin