+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .421040298715941 4.0932e-06   a .7621458527405459 4.1983e-08 au q .4412517352375509 3.1436e-06 au i 4.952878486113731 0.00013771 deg node 332.0499215221612 0.0001169 deg peri 327.2122041336123 0.00017248 deg M 328.7523554108386 0.00095546 deg tp 2459221.594554045563 (2021-Jan-07.09455405) 0.00064673 TDB period 243.0275803583794 0.67 2.0081e-05 5.498e-08 d yr n 1.481313353279195 1.224e-07 deg/d Q 1.083039970243541 5.966e-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 = .00442957 au   Jupiter MOID = 4.12301 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-Apr-17 14:09 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin