+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2018 AK39) Classification: TransNeptunian Object          SPK-ID: 54122966 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2458499.5 (2019-Jan-16.0) TDB Reference: JPL 2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .4677943949203273 0.0049678   a 51.35897597149347 0.052362 au q 27.33353488318105 0.24252 au i 15.50583873841074 0.035337 deg node 77.27415173554287 0.098374 deg peri 215.8445011640347 18.869 deg M 182.6551544840678 46.228 deg tp 2524727.102014104748 (2200-May-14.60201410) 17203 TDB period 134438.2840996403 368.07 205.59 0.5629 d yr n .002677808649604472 4.0951e-06 deg/d Q 75.3844170598059 0.076856 au   Orbit Determination Parameters    # obs. used (total)      6      data-arc span      740 days (2.03 yr)      first obs. used      2018-01-15      last obs. used      2020-01-25      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      9      norm. resid. RMS      .085292      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 20:20:02   Additional Information  Earth MOID = 26.3307 au   Jupiter MOID = 22.236 au   T_jup = 5.453  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 6.52   .058813 E2021D26 autocmod 2.8 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Apr-19 22:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin