+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 RA) Classification: Apollo [NEO]          SPK-ID: 3827149 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4637771836317947 0.00020366   a 1.882643981247045 0.0007165 au q 1.009516657842942 8.1608e-07 au i 4.428898804363635 0.0014418 deg node 336.4009594865755 4.0715e-05 deg peri 13.49340568997305 0.00078599 deg M 239.6012454955411 0.13639 deg tp 2459316.051479452727 (2021-Apr-11.55147945) 0.53761 TDB period 943.5191673745642 2.58 0.53863 0.001475 d yr n .3815502773533851 0.00021782 deg/d Q 2.755771304651149 0.0010488 au   Orbit Determination Parameters    # obs. used (total)      68      data-arc span      3 days      first obs. used      2018-09-01      last obs. used      2018-09-04      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .38171      source      ORB      producer      Otto Matic      solution date      2018-Sep-14 07:26:56   Additional Information  Earth MOID = .0076268 au   Jupiter MOID = 2.68436 au   T_jup = 3.826  [ 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 26.7   .21998 MPO452087 autocmod 2.6n [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2020-Oct-24 13:14 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin