+ 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 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4638438436401675 0.00020394   a 1.882735152433838 0.00071511 au q 1.00944004277247 5.8308e-07 au i 4.428930870846826 0.0014423 deg node 336.4005699704089 3.8625e-05 deg peri 13.48877740274812 0.00072627 deg M 315.9236219753682 0.17997 deg tp 2459316.027578993966 (2021-Apr-11.52757899) 0.53755 TDB period 943.5877061991223 2.58 0.5376 0.001472 d yr n .3815225629105752 0.00021737 deg/d Q 2.756030262095206 0.0010468 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 = .00599518 au   Jupiter MOID = 2.68486 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 ] 2021-Mar-08 01:30 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin