+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259371 (2003 HK16) Classification: Inner Main-belt Asteroid          SPK-ID: 2259371 [ 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 11 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .07182849268614659 5.2071e-08   a 1.979664487569311 1.2084e-08 au q 1.837468171402914 1.0286e-07 au i 23.13681419308374 1.0678e-05 deg node 72.18397157950089 2.1402e-05 deg peri 68.78252019267295 8.8556e-05 deg M 110.8215402623371 8.6149e-05 deg tp 2458687.310281238101 (2019-Jul-22.81028124) 0.00024242 TDB period 1017.386137093796 2.79 9.3154e-06 2.55e-08 d yr n .3538479510133236 3.2399e-09 deg/d Q 2.121860803735707 1.2952e-08 au   Orbit Determination Parameters    # obs. used (total)      246      data-arc span      5726 days (15.68 yr)      first obs. used      2003-04-11      last obs. used      2018-12-14      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .66283      source      ORB      producer      Otto Matic      solution date      2019-Jul-13 17:34:50   Additional Information  Earth MOID = .915478 au   Jupiter MOID = 3.04456 au   T_jup = 3.760  [ 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 17.1   n/a MPO470763   259371 (2003 HK16)          Discovered 2003-Apr-24 by LINEAR at Socorro Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ] 2021-Jan-17 23:10 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin