+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 PL9) Classification: Amor [NEO]          SPK-ID: 3826671 [ 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 25 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .6745545762693541 3.3534e-06   a 3.279985036265598 3.5385e-05 au q 1.067456119957636 5.5363e-07 au i 30.96462117557961 8.1676e-05 deg node 318.5231357021769 1.2954e-05 deg peri 68.04977611974425 6.7517e-05 deg M 96.70732809640201 0.0015552 deg tp 2458417.641540464197 (2018-Oct-26.14154046) 6.3295e-05 TDB period 2169.732631054831 5.94 0.035111 9.613e-05 d yr n .16591906064711 2.6849e-06 deg/d Q 5.492513952573561 5.9254e-05 au   Orbit Determination Parameters    # obs. used (total)      157      data-arc span      226 days      first obs. used      2018-06-12      last obs. used      2019-01-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .40712      source      ORB      producer      Otto Matic      solution date      2020-Sep-15 06:53:24   Additional Information  Earth MOID = .297057 au   Jupiter MOID = 2.00916 au   T_jup = 2.592  [ 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 19.2   .46361 E2019-VI7 autocmod 2.6n [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ] 2021-Mar-01 20:58 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin