+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 CW2) Classification: Aten [NEO]          SPK-ID: 3799312 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB Reference: JPL 5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4210312048062528 4.0937e-06   a .7621491979791716 4.0618e-08 au q .4412606029118817 3.1433e-06 au i 4.952796809732948 0.0001377 deg node 332.049340252097 0.00011685 deg peri 327.2146310617314 0.00017253 deg M 259.0889449283552 0.00097842 deg tp 2459464.623141692310 (2021-Sep-07.12314169) 0.00066587 TDB period 243.0291804185347 0.67 1.9428e-05 5.319e-08 d yr n 1.481303600580074 1.1842e-07 deg/d Q 1.083037793046461 5.7719e-08 au   Orbit Determination Parameters    # obs. used (total)      125      data-arc span      737 days (2.02 yr)      first obs. used      2018-02-09      last obs. used      2020-02-16      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      2      norm. resid. RMS      .54141      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 20:22:04   Additional Information  Earth MOID = .00423635 au   Jupiter MOID = 4.12198 au   T_jup = 7.519  [ 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 25.8   n/a MPO545073   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Jul-31 02:32 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin