+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   118378 (1999 HT11) Classification: TransNeptunian Object          SPK-ID: 2118378 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] [ show orbit diagram ] Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB Reference: JPL 5 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1181817766978826 3.6205e-05   a 43.94717428642389 0.0033896 au q 38.75341914840282 0.0014725 au i 5.0470543118385 8.0497e-05 deg node 87.96650440609915 0.0007762 deg peri 188.6715148571367 0.021017 deg M 328.2309344773201 0.019465 deg tp 2468591.174787474125 (2046-Sep-02.67478747) 4.6792 TDB period 106413.042620887 291.34 12.311 0.03371 d yr n .003383043949627077 3.9139e-07 deg/d Q 49.14092942444497 0.0037902 au   Orbit Determination Parameters    # obs. used (total)      53      data-arc span      7589 days (20.78 yr)      first obs. used      1999-04-17      last obs. used      2020-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      3      norm. resid. RMS      .58602      source      ORB      producer      Otto Matic      solution date      2020-Nov-12 18:11:57   Additional Information  Earth MOID = 37.7352 au   Jupiter MOID = 33.5162 au   T_jup = 5.868  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 7.6   n/a MPO341358   118378 (1999 HT11)          Discovered 1999-Apr-17 by Kitt Peak at Kitt Peak Reference: 20051116/Numbers.arc Last Updated: 2005-11-21 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Apr-10 18:49 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin