+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2015 RH278) Classification: TransNeptunian Object          SPK-ID: 3831049 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 2 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .380874894870764 0.0033151   a 55.59993518232479 0.16313 au q 34.42331571493554 0.083717 au i 5.033366920386118 0.0031072 deg node 191.1313662466855 0.0030846 deg peri 305.4566011461766 0.41976 deg M 273.6801938160863 0.98015 deg tp 2495509.794504069694 (2120-May-16.29450407) 252.63 TDB period 151429.279088222 414.59 666.45 1.825 d yr n .002377347380688946 1.0463e-05 deg/d Q 76.77655464971404 0.22526 au   Orbit Determination Parameters    # obs. used (total)      31      data-arc span      883 days (2.42 yr)      first obs. used      2015-06-23      last obs. used      2017-11-22      planetary ephem.      DE441      SB-pert. ephem.      SB441-N16      condition code      6      norm. resid. RMS      .24933      source      ORB      producer      Otto Matic      solution date      2021-Apr-15 14:36:58   Additional Information  Earth MOID = 33.4397 au   Jupiter MOID = 29.0976 au   T_jup = 6.115  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.2   .30884 E2018T36 autocmod 2.6n [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2021-Apr-19 23:23 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin