+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2015 TN178) Classification: TransNeptunian Object          SPK-ID: 3730324 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 13 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .9560120851559522 2.5387e-06   a 54.25606342948198 0.0031378 au q 2.386611097909312 4.0914e-07 au i 91.11995894157667 2.6079e-05 deg node 225.897931655117 7.1342e-06 deg peri 274.7700177015639 5.7512e-05 deg M 3.385991692314781 0.00029362 deg tp 2457627.551539144213 (2016-Aug-27.05153914) 0.00035409 TDB period 145972.4331367715 399.65 12.663 0.03467 d yr n .002466219081672027 2.1394e-07 deg/d Q 106.1255157610547 0.0061375 au   Orbit Determination Parameters    # obs. used (total)      65      data-arc span      597 days (1.63 yr)      first obs. used      2015-10-08      last obs. used      2017-05-27      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      2      norm. resid. RMS      .52816      source      ORB      producer      Otto Matic      solution date      2017-Jun-05 07:39:57   Additional Information  Earth MOID = 2.10915 au   Jupiter MOID = .0116311 au   T_jup = 0.059  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.3   n/a MPO409981   [ show close-approach data ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ] 2021-Jan-17 19:02 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin