+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 RQ4) Classification: Apollo [NEO]          SPK-ID: 3827570 [ 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 6 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4018576293980441 0.00047959   a 1.607555923724383 0.0012446 au q .9615473110917192 2.6511e-05 au i .3507214351827444 0.00036291 deg node 262.4863226460727 0.015585 deg peri 130.9541013788935 0.016646 deg M 285.2539414329087 0.32709 deg tp 2459155.072901116598 (2020-Nov-01.57290112) 0.85592 TDB period 744.4706178323473 2.04 0.86461 0.002367 d yr n .4835650882343767 0.0005616 deg/d Q 2.253564536357046 0.0017448 au   Orbit Determination Parameters    # obs. used (total)      38      data-arc span      11 days      first obs. used      2018-09-07      last obs. used      2018-09-18      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      7      norm. resid. RMS      .57409      source      ORB      producer      Otto Matic      solution date      2019-Aug-25 05:25:30   Additional Information  Earth MOID = .00252485 au   Jupiter MOID = 3.18687 au   T_jup = 4.255  [ 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 26.9   .42175 MPO452105 autocmod 2.6n [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Feb-28 10:42 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin