+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   259364 (2003 HU3) Classification: Main-belt Asteroid          SPK-ID: 2259364 [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 .0839889002943616 4.9577e-08   a 3.08793138084919 3.6429e-08 au q 2.828579419987217 1.4778e-07 au i 16.29399592282814 9.4467e-06 deg node 212.1982696855185 1.8709e-05 deg peri 266.4101486843329 5.8458e-05 deg M 140.5624169641915 5.5389e-05 deg tp 2458226.632507508302 (2018-Apr-18.13250751) 0.00030479 TDB period 1981.982832352572 5.43 3.5073e-05 9.602e-08 d yr n .1816362857052034 3.2142e-09 deg/d Q 3.347283341711163 3.9489e-08 au   Orbit Determination Parameters    # obs. used (total)      244      data-arc span      6885 days (18.85 yr)      first obs. used      2000-10-03      last obs. used      2019-08-10      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .61916      source      ORB      producer      Otto Matic      solution date      2020-Nov-11 23:10:38   Additional Information  Earth MOID = 1.90408 au   Jupiter MOID = 1.87343 au   T_jup = 3.159  [ show covariance matrix ] [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] Physical Parameter Table Parameter Symbol Value Units Sigma Reference Notes absolute magnitude H 15.4   n/a MPO433689   diameter diameter 3.941 km 0.847 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   geometric albedo albedo 0.065   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)   259364 (2003 HU3)          Discovered 2003-Apr-24 by LONEOS at Anderson Mesa Reference: 20110119/Numbers.arc Last Updated: 2011-01-25 [ show close-approach data ] Alternate Designations  2003 HU3 = 2006 XC64  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2021-Jan-22 04:54 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin