+ 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 2459000.5 (2020-May-31.0) TDB Reference: JPL 4 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1190475815304301 0.00019903   a 44.00867393813633 0.020724 au q 38.76954773943992 0.010213 au i 5.045387018623634 0.00016555 deg node 87.97803384184536 0.0024669 deg peri 188.1162324237118 0.13828 deg M 328.058071403992 0.12506 deg tp 2468462.097839252445 (2046-Apr-26.59783925) 30.423 TDB period 106636.4922798235 291.95 75.325 0.2062 d yr n .003375955006615639 2.3847e-06 deg/d Q 49.24780013683273 0.023191 au   Orbit Determination Parameters    # obs. used (total)      28      data-arc span      5881 days (16.10 yr)      first obs. used      1999-04-17      last obs. used      2015-05-24      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      4      norm. resid. RMS      .29499      source      ORB      producer      Otto Matic      solution date      2017-Apr-11 11:31:33   Additional Information  Earth MOID = 37.7532 au   Jupiter MOID = 33.5304 au   T_jup = 5.871  [ 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 ] 2020-Oct-29 04:37 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin