+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   (2010 EL139) Classification: TransNeptunian Object          SPK-ID: 3515020 [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] [ show orbit diagram ] Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .06534248049249783 2.8873e-05   a 39.46884916043968 0.0015389 au q 36.88985665411231 0.00093257 au i 23.01256400862487 5.7905e-05 deg node 331.2324153415108 0.00025293 deg peri 212.1996632172323 0.040494 deg M 31.95123332452257 0.035828 deg tp 2450962.180802628387 (1998-May-28.68080263) 8.7932 TDB period 90569.11455223212 247.96 5.297 0.0145 d yr n .003974864961193635 2.3247e-07 deg/d Q 42.04784166676705 0.0016395 au   Orbit Determination Parameters    # obs. used (total)      163      data-arc span      2856 days (7.82 yr)      first obs. used      2010-03-12      last obs. used      2018-01-05      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      3      norm. resid. RMS      .38974      source      ORB      producer      Otto Matic      solution date      2018-Sep-17 04:50:11   Additional Information  Earth MOID = 35.9149 au   Jupiter MOID = 31.5698 au   T_jup = 5.191  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 5.6   n/a MPO456661   rotation period rot_per 6.32 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong. Published Reference List: [Benecchi, S.D.; Sheppard, S.S. (2013) Astron. J. 145, A124.] [ Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters ] 2020-Aug-06 10:59 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin