+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 AX18) Classification: TransNeptunian Object          SPK-ID: 3838199 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2458341.5 (2018-Aug-11.0) TDB Reference: JPL 3 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .2931886488036057 0.040123   a 52.08491522301179 0.64806 au q 36.81420930572661 1.6435 au i 20.55866441295175 0.0069083 deg node 204.0461511750861 0.028926 deg peri 21.28897340782493 7.926 deg M 239.9240136736814 15.832 deg tp 2504136.707505680257 (2143-Dec-29.20750568) 5194.9 TDB period 137298.682329719 375.90 2562.5 7.016 d yr n .002622020793582491 4.8937e-05 deg/d Q 67.35562114029698 0.83807 au   Orbit Determination Parameters    # obs. used (total)      10      data-arc span      684 days (1.87 yr)      first obs. used      2018-01-15      last obs. used      2019-11-30      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      8      norm. resid. RMS      .1685      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 20:18:37   Additional Information  Earth MOID = 35.8131 au   Jupiter MOID = 31.4234 au   T_jup = 5.764  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 6.6   .082266 MPO545072 autocmod 2.6q [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Apr-21 06:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin