+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   46265 (2001 HC51) Classification: Main-belt Asteroid          SPK-ID: 2046265 [ 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 24 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .1273001378435696 4.5347e-08   a 3.059376608381291 2.2162e-08 au q 2.66991754441896 1.3729e-07 au i 10.17879354516233 4.5363e-06 deg node 225.4704175649089 2.7157e-05 deg peri 68.80332026969107 3.2077e-05 deg M 130.4532384320131 1.8228e-05 deg tp 2458292.227787568222 (2018-Jun-22.72778757) 9.7324e-05 TDB period 1954.554747280759 5.35 2.1238e-05 5.815e-08 d yr n .1841851708174682 2.0014e-09 deg/d Q 3.448835672343622 2.4984e-08 au   Orbit Determination Parameters    # obs. used (total)      789      data-arc span      8153 days (22.32 yr)      first obs. used      1997-09-30      last obs. used      2020-01-26      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .51832      source      ORB      producer      Otto Matic      solution date      2020-Feb-23 08:24:20   Additional Information  Earth MOID = 1.67533 au   Jupiter MOID = 1.76539 au   T_jup = 3.198  [ 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 14.5   n/a MPO502464   46265 (2001 HC51)          Discovered 2001-Apr-23 by LINEAR at Socorro Reference: 20020822/Numbers.arc Last Updated: 2004-04-19 [ hide close-approach data ] Close-Approach Data   ...sorted by Date/Time (TDB) Date/Time (TDB) Time Uncertainty (days_HH:MM) Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified 1919-Jul-26 02:04 00:03 Jupiter 1.97099622393892 1.97099465157891 1.97099779630923 2.44445916003683 2.26183418699405 2422165.586355242 3.46366590325012 290.352198172937 39.5174795749772 -72.977316372476 2533484.68485055 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 1929-Feb-13 19:16 00:03 Jupiter 1.83319093774187 1.8331899346853 1.83319194080896 3.96067058332329 3.84224089979285 2425656.302665541 2.78253455542412 246.641581503307 16.8477194001983 -80.0727492102949 3163105.29452756 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 1977-Nov-17 03:30 00:01 Jupiter 1.79664969288658 1.79664910231904 1.79665028345441 3.10464805707128 2.94888935763871 2443464.645839995 1.25734449440864 103.695577417446 30.2917360419476 84.3259057286295 2526674.51277397 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 2036-Apr-03 09:48 < 00:01 Jupiter 1.79454044774914 1.79453999822472 1.79454089727386 3.78903073732402 3.6623427706603 2464786.908266474 0.736651376242007 84.8778310408999 17.0319351751178 -83.1345750528839 2983272.0799608 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 2085-Jan-14 05:57 00:03 Jupiter 1.8590104383865 1.85900962795492 1.8590112488183 2.72684464692215 2.55429442666876 2482604.748248047 2.5099785200393 108.088843569994 58.4063333829718 -89.7987754172564 1750086.5085402 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 2094-Aug-26 00:52 00:03 Jupiter 1.97789381823844 1.97789242733153 1.97789520915198 4.39706572089022 4.2985692483856 2486115.535972869 2.60393934959426 203.054138613198 18.0590307878683 -71.8108949200274 3639418.1272074 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 2143-May-24 21:33 00:04 Jupiter 1.78524966690142 1.78524921128535 1.78525012252277 3.52857567006797 3.39145015406902 2503918.397938877 4.24869233318506 350.526607365626 18.408795506166 89.3858625477608 2552039.44382363 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 2192-Mar-23 08:50 00:07 Jupiter 1.92959217771911 1.92959007451248 1.92959428095054 2.33660542003178 2.14051298449071 2521753.867719170 6.53423434376494 412.602120371225 46.7098321946788 -66.558416039522 2550709.08811231 T 24 CATAB v2.0f-lin.ifort 2020-Feb-23 08:24:40 2020-Feb-23 08:24 Alternate Designations  2001 HC51 = 1997 SF29  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Jul-10 04:29 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin