+ View the NASA Portal + Center for Near-Earth Object Studies JPL Small-Body Database Browser Search: [ help ]   11724 Ronaldhsu (1998 HH146) Classification: Main-belt Asteroid          SPK-ID: 2011724 [ 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 28 (heliocentric ecliptic J2000)  Element Value Uncertainty (1-sigma)   Units  e .09502097257629591 3.0693e-08   a 2.248781131126844 7.0964e-09 au q 2.035099760935948 6.8806e-08 au i 3.266712798566879 3.3933e-06 deg node 96.83856560270398 6.9042e-05 deg peri 15.07678422003107 7.2473e-05 deg M 295.0362136446454 2.3609e-05 deg tp 2459222.773679274613 (2021-Jan-08.27367927) 8.1236e-05 TDB period 1231.740466929624 3.37 5.8305e-06 1.596e-08 d yr n .292269361659747 1.3835e-09 deg/d Q 2.462462501317739 7.7707e-09 au   Orbit Determination Parameters    # obs. used (total)      1674      data-arc span      16962 days (46.44 yr)      first obs. used      1974-02-19      last obs. used      2020-07-29      planetary ephem.      DE431      SB-pert. ephem.      SB431-N16      condition code      0      norm. resid. RMS      .48348      source      ORB      producer      Otto Matic      solution date      2020-Aug-25 00:27:18   Additional Information  Earth MOID = 1.05192 au   Jupiter MOID = 2.60746 au   T_jup = 3.621  [ 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 14.6   n/a MPO449027   11724 Ronaldhsu           Discovered 1998 Apr. 21 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro. Ronald Hsu (b. 1985) is a finalist in the 2002 Intel International Science and Engineering Fair for his mathematics project. He attends the West Shore Jr/Sr High School, Palm Bay, Florida, U.S.A. NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) Reference: 20020724/MPCPages.arc Last Updated: 2003-10-02 [ show close-approach data ] Alternate Designations  1998 HH146 = 1974 DM = 1976 YF7  [ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ] 2020-Sep-23 20:56 UT (server date/time)   Site Manager:   Ryan S. Park Webmaster:   Alan B. Chamberlin